R1 —– R2 —– R3 —— R4

CONFIGURATION

R1#
mpls traff tunnel
int lo0
 ip add 1.1.1.1 255.255.255.255

int fa0/0
 ip add 12.0.0.1 255.255.255.0
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000

router ospf 1
 mpls traffic-eng router-id loo0
 mpls traffic-eng area 0
 net 1.1.1.1 0.0.0.0 area 0
 net 12.0.0.1 0.0.0.0 area 0
int tunnel14
 ip unnumbered lo0
 tunnel mode mpls traffic-eng
 tunnel destination 4.4.4.4
 tunnel mpls traffic-eng bandwidth 50000
 tunnel mpls traffic-eng path-option 10 dynamic
interface Tunnel104
 ip unnumbered Loopback0
 tunnel destination 4.4.4.4
 tunnel mode mpls traffic-eng
 tunnel mpls traffic-eng priority 7 7
 tunnel mpls traffic-eng bandwidth 10000
 tunnel mpls traffic-eng path-option 10 dynamic
ip route 40.40.40.0 255.255.255.0 Tunnel104
ip route 44.44.44.0 255.255.255.0 Tunnel14
R2#
mpls traff tunnel
int fa0/0
 ip address 12.0.0.2 255.255.255.0
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000

int fa0/1
 ip address 23.0.0.2 255.255.255.0
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000

int lo0
 ip add 2.2.2.2 255.255.255.255

router ospf 1
 mpls traffic-eng area 0
 mpls traffic-eng router-id loo0
 net 0.0.0.0 255.255.255.255 area 0
R3#

mpls traff tunnel

int lo0
 ip add 3.3.3.3 255.255.255.255
router ospf 1
 mpls traffic-eng area 0
 mpls traffic-eng router-id loo0
 net 0.0.0.0 255.255.255.255 area 0
int fa0/0
 ip address 34.0.0.3 255.255.255.0
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000

int fa0/1
 ip add 23.0.0.3 255.255.255.0
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000
 
R4#

mpls traff tunnel

int lo0
 ip add 4.4.4.4 255.255.255.255
router ospf 1
 mpls traffic-eng area 0
 mpls traffic-eng router-id loo0
 net 0.0.0.0 255.255.255.255 area 0
int fa0/0
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000

int fa0/1
 mpls ip
 mpls traffic-eng tunnels
 ip rsvp bandwidth 100000 100000
int tunnel41
 ip unnumbered lo0
 tunnel mode mpls traffic-eng
 tunnel destination 1.1.1.1
 tunnel mpls traffic-eng bandwidth 50000
 tunnel mpls traffic-eng path-option 10 dynamic

!
interface Loopback40
 ip address 40.40.40.40 255.255.255.0
!
interface Loopback44
 ip address 44.44.44.44 255.255.255.0

TE VERIFICATION

R1#show mpls traffic-eng tunnels  

Name: R1_t14                              (Tunnel14) Destination: 4.4.4.4
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 3)

  Config Parameters:
    Bandwidth: 50000    kbps (Global)  Priority: 7  7   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  disabled  LockDown: disabled  Loadshare: 50000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/0, 20
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 14, Tun_Instance 28
    RSVP Path Info:
      My Address: 12.0.0.1  
      Explicit Route: 12.0.0.2 23.0.0.2 23.0.0.3 34.0.0.3
                      34.0.0.4 4.4.4.4
      Record   Route:   NONE
      Tspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
  History:
    Tunnel:
      Time since created: 27 minutes, 32 seconds
      Time since path change: 22 minutes, 2 seconds
      Number of LSP IDs (Tun_Instances) used: 28
    Current LSP:
      Uptime: 22 minutes, 2 seconds
    Prior LSP:
      ID: path option 10 [25]
      Removal Trigger: path error

Name: R1_t104                             (Tunnel104) Destination: 4.4.4.4
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 3)

  Config Parameters:
    Bandwidth: 10000    kbps (Global)  Priority: 7  7   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  disabled  LockDown: disabled  Loadshare: 10000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/0, 23
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 104, Tun_Instance 1
    RSVP Path Info:
      My Address: 12.0.0.1  
      Explicit Route: 12.0.0.2 23.0.0.2 23.0.0.3 34.0.0.3
                      34.0.0.4 4.4.4.4
      Record   Route:   NONE
      Tspec: ave rate=10000 kbits, burst=1000 bytes, peak rate=10000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=10000 kbits, burst=1000 bytes, peak rate=10000 kbits
  History:
    Tunnel:
      Time since created: 11 minutes, 2 seconds
      Time since path change: 11 minutes
      Number of LSP IDs (Tun_Instances) used: 1
    Current LSP:
      Uptime: 11 minutes

LSP Tunnel R4_t41 is signalled, connection is up
  InLabel  : FastEthernet0/0, implicit-null
  OutLabel :  -
  RSVP Signalling Info:
       Src 4.4.4.4, Dst 1.1.1.1, Tun_Id 41, Tun_Instance 14
    RSVP Path Info:
      My Address: 1.1.1.1  
      Explicit Route:  NONE
      Record   Route:   NONE
      Tspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits

CHECK LABEL STACK DETAILS

R1#show mpls forwarding-table
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop   
Label  Label or VC   or Tunnel Id      Switched      interface             
16     Pop Label     2.2.2.2/32        0             Fa0/0      12.0.0.2   
17     Pop Label     23.0.0.0/24       0             Fa0/0      12.0.0.2   
18     17            3.3.3.3/32        0             Fa0/0      12.0.0.2   
19     18            34.0.0.0/24       0             Fa0/0      12.0.0.2   
20     22            4.4.4.4/32        0             Fa0/0      12.0.0.2   
22     Pop Label [T] 44.44.44.0/24     0             Tu14       point2point
23     Pop Label [T] 40.40.40.0/24     0             Tu104      point2point

[T]     Forwarding through a LSP tunnel.
        View additional labelling info with the ‘detail’ option

R1#show mpls forwarding-table  44.44.44.0 detail
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop   
Label  Label or VC   or Tunnel Id      Switched      interface             
22     Pop Label     44.44.44.0/24     0             Tu14       point2point
        MAC/Encaps=14/18, MRU=1500, Label Stack{20}, via Fa0/0
        CA0105800008CA00058000088847 00014000
        No output feature configured

R1#show mpls forwarding-table  40.40.40.0 detail
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop   
Label  Label or VC   or Tunnel Id      Switched      interface             
23     Pop Label     40.40.40.0/24     0             Tu104      point2point
        MAC/Encaps=14/18, MRU=1500, Label Stack{23}, via Fa0/0
        CA0105800008CA00058000088847 00017000
        No output feature configured

R2#show mpls forwarding-table
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop   
Label  Label or VC   or Tunnel Id      Switched      interface             
16     Pop Label     1.1.1.1/32        3034          Fa0/0      12.0.0.1   
17     Pop Label     3.3.3.3/32        0             Fa0/1      23.0.0.3   
18     Pop Label     34.0.0.0/24       0             Fa0/1      23.0.0.3   
20     19            1.1.1.1 14 [28]   3104          Fa0/1      23.0.0.3   
21     Pop Label     4.4.4.4 41 [14]   0             Fa0/0      12.0.0.1   
22     21            4.4.4.4/32        0             Fa0/1      23.0.0.3   
23     23            1.1.1.1 104 [1]   3694          Fa0/1      23.0.0.3

R2#show mpls traffic-eng tunnels

LSP Tunnel R1_t14 is signalled, connection is up
  InLabel  : FastEthernet0/0, 20
  OutLabel : FastEthernet0/1, 19
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 14, Tun_Instance 28
    RSVP Path Info:
      My Address: 23.0.0.2  
      Explicit Route: 23.0.0.3 34.0.0.3 34.0.0.4 4.4.4.4
      Record   Route:   NONE
      Tspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits

LSP Tunnel R1_t104 is signalled, connection is up
  InLabel  : FastEthernet0/0, 23
  OutLabel : FastEthernet0/1, 23
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 104, Tun_Instance 1
    RSVP Path Info:
      My Address: 23.0.0.2  
      Explicit Route: 23.0.0.3 34.0.0.3 34.0.0.4 4.4.4.4
      Record   Route:   NONE
      Tspec: ave rate=10000 kbits, burst=1000 bytes, peak rate=10000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=10000 kbits, burst=1000 bytes, peak rate=10000 kbits

R3#show mpls forwarding-table
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop   
Label  Label or VC   or Tunnel Id      Switched      interface             
16     Pop Label     2.2.2.2/32        0             Fa0/1      23.0.0.2   
17     16            1.1.1.1/32        3118          Fa0/1      23.0.0.2   
18     Pop Label     12.0.0.0/24       570           Fa0/1      23.0.0.2   
19     Pop Label     1.1.1.1 14 [28]   3288          Fa0/0      34.0.0.4   
21     Pop Label     4.4.4.4/32        0             Fa0/0      34.0.0.4   
22     21            4.4.4.4 41 [14]   0             Fa0/1      23.0.0.2   
23     Pop Label     1.1.1.1 104 [1]   3858          Fa0/0      34.0.0.4 

R3#show mpls traffic-eng tunnels

LSP Tunnel R1_t14 is signalled, connection is up
  InLabel  : FastEthernet0/1, 19
  OutLabel : FastEthernet0/0, implicit-null
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 14, Tun_Instance 28
    RSVP Path Info:
      My Address: 34.0.0.3  
      Explicit Route: 34.0.0.4 4.4.4.4
      Record   Route:   NONE
      Tspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits

LSP Tunnel R1_t104 is signalled, connection is up
  InLabel  : FastEthernet0/1, 23
  OutLabel : FastEthernet0/0, implicit-null
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 104, Tun_Instance 1
    RSVP Path Info:
      My Address: 34.0.0.3  
      Explicit Route: 34.0.0.4 4.4.4.4
      Record   Route:   NONE
      Tspec: ave rate=10000 kbits, burst=1000 bytes, peak rate=10000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=10000 kbits, burst=1000 bytes, peak rate=10000 kbits
 

1. Network statement with static route
2. Redistribution of static route
3. Aggregation

 Example below demonstrates the preferences.

 

R1#srsr
router bgp 13
 no synchronization
 bgp log-neighbor-changes
 network 1.1.0.0 mask 255.255.0.0
 network 1.1.1.1 mask 255.255.255.255
 aggregate-address 1.1.0.0 255.255.0.0
 redistribute static
 neighbor 13.0.0.3 remote-as 13
 no auto-summary

R3#srsr
router bgp 13
 no synchronization
 bgp log-neighbor-changes
 neighbor 13.0.0.1 remote-as 13

Without static or IGP route for 1.1.0.0/16, then the only way 
router originates 1.1.0.0/16 is via Aggregation

R3#sh ip bgp 1.1.0.0/16
BGP routing table entry for 1.1.0.0/16, version 7
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Not advertised to any peer
  Local, (aggregated by 13 13.0.0.1)
    13.0.0.1 from 13.0.0.1 (13.0.0.1)
      Origin IGP, metric 0, localpref 100, valid, internal, atomic-aggregate, best

R1(config)#ip route 1.1.0.0 255.255.0.0 Null0

1.1.0.0/16 leant via all three ways (network, redistribution, aggregate), 
best is via Network Statement

R3#sh ip bgp 1.1.0.0/16
BGP routing table entry for 1.1.0.0/16, version 8
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x820
  Not advertised to any peer
  Local
    13.0.0.1 from 13.0.0.1 (13.0.0.1)
      Origin IGP, metric 0, localpref 100, valid, internal, best

R1(config)#router bgp 13
R1(config-router)#no  network 1.1.0.0 mask 255.255.0.0

1.1.0.0/16 is advertised into BGP via 
both redistribution of static & aggregation, 
then redistribution take precedence.

R3#sh ip bgp 1.1.0.0/16
BGP routing table entry for 1.1.0.0/16, version 9
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x820
  Not advertised to any peer
  Local
    13.0.0.1 from 13.0.0.1 (13.0.0.1)
      Origin incomplete, metric 0, localpref 100, valid, internal, best

R1(config-router)#no ip route 1.1.0.0 255.255.0.0 Null0

Static is removed, then only ways 1.1.0.0/16 
advertised into BGP is via aggregation

R3#sh ip bgp 1.1.0.0/16
BGP routing table entry for 1.1.0.0/16, version 10
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x820
  Not advertised to any peer
  Local, (aggregated by 13 13.0.0.1)
    13.0.0.1 from 13.0.0.1 (13.0.0.1)
      Origin IGP, metric 0, localpref 100, valid, internal, atomic-aggregate, best

As a result, these sort of static routes (pointing to nowhere, or I call it “pointing to hell”) may bite you at a later stage, even when you make an unlikely related change.

This example show that the routing loop starts to kick in, once we add a summary route somewhere else.

PE1#    

interface Serial1/1
 description Connection to PE3
 ip address 13.0.0.1 255.255.255.0

ip route 123.123.123.0 255.255.255.0 3.3.3.1 name Static_to_Hell

router bgp 13
 network 123.123.123.0 mask 255.255.255.0
 redistribute static
 neighbor 13.0.0.3 remote-as 13
 neighbor 13.0.0.3 next-hop-self

PE3#
!
interface Serial1/2
 description Connection to PE1
 ip address 13.0.0.3 255.255.255.0
!
interface Serial1/3
 description Connection to iNET2
 ip address 23.0.0.3 255.255.255.0
!
interface Loopback333
 description Just to similate specific of aggregation route
 ip address 3.3.3.3 255.255.255.255

router bgp 13
 no synchronization
 bgp log-neighbor-changes
 network 3.3.3.3 mask 255.255.255.255
 aggregate-address 3.3.3.0 255.255.255.0
 redistribute connected
 neighbor 13.0.0.1 remote-as 13
 neighbor 13.0.0.1 next-hop-self
 neighbor 23.0.0.2 remote-as 2
 no auto-summary

iNET2#sh run int s1/1
Building configuration...

Current configuration : 86 bytes
!
interface Serial1/1
 description Connection to PE3
 ip address 23.0.0.2 255.255.255.0

router bgp 2
 no synchronization
 bgp log-neighbor-changes
 neighbor 23.0.0.3 remote-as 13
 neighbor 23.0.0.3 default-originate
 no auto-summary

PE1#sh ip route 123.123.123.0
Routing entry for 123.123.123.0/24
  Known via "static", distance 1, metric 0
  Redistributing via bgp 13
  Advertised by bgp 13
  Routing Descriptor Blocks:
  * 3.3.3.1
      Route metric is 0, traffic share count is 1

PE3#sh ip route 123.123.123.0 
Routing entry for 123.123.123.0/24
  Known via "bgp 13", distance 200, metric 0, type internal
  Last update from 13.0.0.1 00:01:32 ago
  Routing Descriptor Blocks:
  * 13.0.0.1, from 13.0.0.1, 00:01:32 ago
      Route metric is 0, traffic share count is 1
      AS Hops 0

iNET2#traceroute 123.123.123.123 ttl 1 10

Type escape sequence to abort.
Tracing the route to 123.123.123.123

  1 23.0.0.3 36 msec 12 msec 16 msec
  2 13.0.0.1 [AS 13] 20 msec 72 msec 12 msec
  3 13.0.0.3 [AS 13] 24 msec 44 msec 68 msec
  4 13.0.0.1 [AS 13] 48 msec 44 msec 64 msec
  5 13.0.0.3 [AS 13] 16 msec 48 msec 76 msec
  6 13.0.0.1 [AS 13] 96 msec 60 msec 52 msec
  7 13.0.0.3 [AS 13] 80 msec 140 msec 80 msec
  8 13.0.0.1 [AS 13] 76 msec 88 msec 72 msec
  9 13.0.0.3 [AS 13] 100 msec 76 msec 116 msec
 10 13.0.0.1 [AS 13] 32 msec 120 msec 128 msec

PE3#c
Enter configuration commands, one per line.  End with CNTL/Z.
PE3(config)#router bgp 13
PE3(config-router)# no aggregate-address 3.3.3.0 255.255.255.0
PE3(config-router)#end

PE1#sh run | in ip route
ip route 123.123.123.0 255.255.255.0 3.3.3.1 name Static_to_Hell

PE1#sh ip route 123.123.123.0
% Network not in table

NO MORE LOOPING

iNET2#traceroute 123.123.123.123 ttl 1 10

Type escape sequence to abort.
Tracing the route to 123.123.123.123

  1  *  *  *
  2  *  *  *

puts [open "flash:ping-script" w+] {
puts ""
show clock
puts " -- Start pinging ..."
puts ""
foreach i {
61.88.88.88
2.2.2.2
123.123.123.123
33.33.33.33
google.com
www.news.com.au
} {
if {[regexp "!" [exec "ping $i rep 3 time 1"]]} {puts "$i OK"} else {puts "$i ***unreachable***"}}
show clock
puts " -- Pings stopped."
puts ""
}
(tcl)# quit

Then to execute the file from enabled mode:
#tclsh ping-script

Reference:

http://blog.ru.co.za/2009/03/28/tcl-script-variations/#more-684 

First method is kinda cool, since you creating an executable file in flash that is there, to be used whenever.
(the w+ means to write/overwrite, or if you want to append the file use a+ instead)
#tclsh
puts [open "flash:ping-script.tcl" w+] {
foreach IP {
150.1.1.1
204.12.1.254
} { puts [ exec "ping $IP re 2" ] }
}
(tcl)#tclquit

Then to execute the file from global configuration mode:
#tclsh ping-script.tcl

Second method is pretty pointless unless you writing a beeg script and actually using ‘process’ for what it is meant. Problem here is once you exit tcl-shell, the info is gone.
To execute while in tclsh just type the name
#tclsh
proc ping-script {} {
foreach IP {
150.1.1.1
204.12.1.254
} { puts [ exec "ping $IP re 2" ] }
}
(tcl)#ping-script

Third method is the most common one I have seen guys use. And its not bad, but still to much syntax to remember off-hand.
This will execute the ping command once <RETURN> is pressed at the last line.
#tclsh
foreach IP {
150.1.1.1
204.12.1.254
} { puts [ exec "ping $IP re 2" ] }

Best method, is a almost always the shortest one. Again execution will auto follow once the script is complete.
(oh and ‘IP’ is just a arbitrary name I used, not a tcl value)
#tclsh
foreach IP {
150.1.1.1
204.12.1.254
} {ping $IP re 2}


If we want a tunnel that can cross any link, we need to set its affinity to 0×0 mask 0×0.
R1#sh mpls traffic-eng tunnels tu0

Name: R1_t0                               (Tunnel0) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: down   Path: not valid   Signalling: Down
    path option 5, type explicit R1_R2
    path option 10, type dynamic

  Config Parameters:
    Bandwidth: 55000    kbps (Global)  Priority: 6  6   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 55000    bw-based
    auto-bw: disabled

R1(config-if)#int tun0
R1(config-if)#tunnel mpls traffic-eng affinity 0×0 mask 0×0
R1(config-if)#end
R1#sh
*May 18 21:25:17.035: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to up
R1#sh mpls t
*May 18 21:25:17.179: %SYS-5-CONFIG_I: Configured from console by console
R1#sh mpls tra
R1#sh mpls traffic-eng tun
R1#sh mpls traffic-eng tunnels

Name: R1_t0                               (Tunnel0) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 2)
    path option 5, type explicit R1_R2

  Config Parameters:
    Bandwidth: 55000    kbps (Global)  Priority: 6  6   Affinity: 0×0/0×0
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 55000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/1, 24
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 0, Tun_Instance 408
    RSVP Path Info:
      My Address: 14.0.0.1  
      Explicit Route: 14.0.0.4 24.0.0.4 24.0.0.2 2.2.2.2
      Record   Route:   NONE

Current configuration : 2645 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
ip source-route
ip cef
!
!
!
!
!
!        
multilink bundle-name authenticated
mpls traffic-eng tunnels
mpls traffic-eng reoptimize timers frequency 10
mpls traffic-eng reoptimize timers delay installation 5
mpls traffic-eng auto-bw timers frequency 5
!
!
!
!
!
!
!
!
!
!
interface Tunnel0
 ip unnumbered Loopback0
 tunnel destination 2.2.2.2
 tunnel mode mpls traffic-eng
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng priority 6 6
 tunnel mpls traffic-eng bandwidth 55000
 tunnel mpls traffic-eng path-option 5 explicit name R1_R2
 tunnel mpls traffic-eng path-option 10 dynamic
!
interface Tunnel1
 ip unnumbered Loopback0
 tunnel destination 2.2.2.2
 tunnel mode mpls traffic-eng
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng priority 5 5
 tunnel mpls traffic-eng bandwidth 50000
 tunnel mpls traffic-eng path-option 10 dynamic
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
 ip address 12.0.0.1 255.255.255.0
 speed auto
 duplex auto
 mpls traffic-eng tunnels
 mpls ip
 ip rsvp bandwidth 90000 90000
!
interface FastEthernet0/1
 ip address 14.0.0.1 255.255.255.0
 speed auto
 duplex auto
 mpls traffic-eng tunnels
 mpls ip
 ip rsvp bandwidth 90000 90000
!
router ospf 1
 log-adjacency-changes
 network 1.1.1.1 0.0.0.0 area 0
 network 12.0.0.1 0.0.0.0 area 0
 network 14.0.0.1 0.0.0.0 area 0
 mpls traffic-eng router-id Loopback0
 mpls traffic-eng area 0
!
ip classless
no ip http server
no ip http secure-server
!
!
!
ip explicit-path name R1_R4_R3_R2 enable
 next-address 14.0.0.4
 next-address 34.0.0.3
 next-address 23.0.0.2
!
ip explicit-path name R1_R2 enable
 next-address 12.0.0.2
!
R1(config)#mpls traffic-eng auto-bw timers frequency ?
  <1-604800>  seconds between auto-bw

R1(config)#mpls traffic-eng reoptimize events link-up

R1(config)#mpls traffic-eng reoptimize timers delay installation ?
  <0-3600>  seconds to delay replacement of tunnel LSP

R1(config)#mpls traffic-eng reoptimize timers delay installation 5
R1(config)#mpls traffic-eng reoptimize timers frequency ?
  <0-604800>  seconds between reoptimizations (0 disables reoptimization)

R1(config)#mpls traffic-eng reoptimize timers frequency 10
R1#

interface Tunnel0
 ip unnumbered Loopback0
 tunnel destination 2.2.2.2
 tunnel mode mpls traffic-eng
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng priority 6 6
 tunnel mpls traffic-eng bandwidth 50000
 tunnel mpls traffic-eng path-option 5 explicit name R1_R2 lockdown
 tunnel mpls traffic-eng path-option 10 dynamic
!
interface Tunnel1
 ip unnumbered Loopback0
 tunnel destination 2.2.2.2
 tunnel mode mpls traffic-eng
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng priority 5 5
 tunnel mpls traffic-eng bandwidth 50000
 tunnel mpls traffic-eng path-option 10 dynamic
ip explicit-path name R1_R4_R3_R2 enable
 next-address 14.0.0.4
 next-address 34.0.0.3
 next-address 23.0.0.2

ip explicit-path name R1_R2 enable
 next-address 12.0.0.2

R1#sh mpls traffic-eng tunnels summary
Signalling Summary:
    LSP Tunnels Process:            running
    Passive LSP Listener:           running
    RSVP Process:                   running
    Forwarding:                     enabled
    Head: 2 interfaces, 2 active signalling attempts, 2 established
          34 activations, 32 deactivations
          0 SSO recovery attempts, 0 SSO recovered
    Midpoints: 0, Tails: 0
    Periodic reoptimization:        every 10 seconds, next in 1 seconds
    Periodic FRR Promotion:         Not Running
    Periodic auto-bw collection:    every 5 seconds, next in 2 seconds

R1#sh mpls traffic-eng tunnels tun0   

Name: R1_t0                               (Tunnel0) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 3)

  Config Parameters:
    Bandwidth: 55000    kbps (Global)  Priority: 6  6   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 55000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/1, 22
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 0, Tun_Instance 281
    RSVP Path Info:
      My Address: 14.0.0.1  
      Explicit Route: 14.0.0.4 34.0.0.4 34.0.0.3 23.0.0.3
                      23.0.0.2 2.2.2.2
      Record   Route:   NONE
      Tspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
  Shortest Unconstrained Path Info:
    Path Weight: 1 (TE)
    Explicit Route: 12.0.0.1 12.0.0.2 2.2.2.2
  History:
    Tunnel:
      Time since created: 2 hours, 16 minutes
      Time since path change: 6 minutes, 50 seconds
      Number of LSP IDs (Tun_Instances) used: 281
    Current LSP:
      Uptime: 6 minutes, 50 seconds
    Prior LSP:
      ID: path option 10 [280]
      Removal Trigger: path error
R1#sh mpls traffic-eng tunnels tun1

Name: R1_t1                               (Tunnel1) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 1)

  Config Parameters:
    Bandwidth: 50000    kbps (Global)  Priority: 5  5   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 50000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/0, implicit-null
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 1, Tun_Instance 132
    RSVP Path Info:
      My Address: 12.0.0.1  
      Explicit Route: 12.0.0.2 2.2.2.2
      Record   Route:   NONE
      Tspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
  Shortest Unconstrained Path Info:
    Path Weight: 1 (TE)
    Explicit Route: 12.0.0.1 12.0.0.2 2.2.2.2
  History:
    Tunnel:
      Time since created: 54 minutes, 44 seconds
      Time since path change: 25 minutes, 57 seconds
      Number of LSP IDs (Tun_Instances) used: 132
    Current LSP:
      Uptime: 6 minutes, 54 seconds
      Selection: reoptimization
    Prior LSP:
      ID: path option 10 [39]
      Removal Trigger: configuration changed
R1#c
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#int tun1
R1(config-if)#shut
R1(config-if)#end
R1#
R1#
R1#
R1#sh mpls  traffic-eng tunnels tun0

Name: R1_t0                               (Tunnel0) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 3)
    path option 5 reoptimization in progress

  Config Parameters:
    Bandwidth: 55000    kbps (Global)  Priority: 6  6   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 55000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/1, 22
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 0, Tun_Instance 382
    RSVP Path Info:
      My Address: 14.0.0.1  
      Explicit Route: 14.0.0.4 34.0.0.4 34.0.0.3 23.0.0.3
                      23.0.0.2 2.2.2.2
      Record   Route:   NONE
      Tspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
  Shortest Unconstrained Path Info:
    Path Weight: 1 (TE)
    Explicit Route: 12.0.0.1 12.0.0.2 2.2.2.2
  History:
    Tunnel:
      Time since created: 2 hours, 27 minutes
      Time since path change: 3 seconds
      Number of LSP IDs (Tun_Instances) used: 403
    Current LSP:
      Uptime: 8 seconds
      Selection: reoptimization
    Prior LSP:
      ID: path option 10 [382]
      Removal Trigger: reoptimization completed
R1#sh mpls  traffic-eng tunnels summ
Signalling Summary:
    LSP Tunnels Process:            running
    Passive LSP Listener:           running
    RSVP Process:                   running
    Forwarding:                     enabled
    Head: 2 interfaces, 1 active signalling attempts, 1 established
          43 activations, 42 deactivations
          0 SSO recovery attempts, 0 SSO recovered
    Midpoints: 0, Tails: 0
    Periodic reoptimization:        every 10 seconds, next in 4 seconds
    Periodic FRR Promotion:         Not Running
    Periodic auto-bw collection:    every 5 seconds, next in 2 seconds

R1#sh mpls traff tun tun0

Name: R1_t0                               (Tunnel0) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 5, type explicit R1_R2 (Basis for Setup, path weight 1)
    path option 10, type dynamic

  Config Parameters:
    Bandwidth: 55000    kbps (Global)  Priority: 6  6   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 55000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: explicit path option 5 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/0, implicit-null
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 0, Tun_Instance 403
    RSVP Path Info:
      My Address: 12.0.0.1  
      Explicit Route: 12.0.0.2 2.2.2.2
      Record   Route:   NONE
      Tspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
  Shortest Unconstrained Path Info:
    Path Weight: 1 (TE)
    Explicit Route: 12.0.0.1 12.0.0.2 2.2.2.2
  History:
    Tunnel:
      Time since created: 2 hours, 28 minutes
      Time since path change: 57 seconds
      Number of LSP IDs (Tun_Instances) used: 403
    Current LSP:
      Uptime: 1 minutes, 2 seconds
      Selection: reoptimization
    Prior LSP:
      ID: path option 10 [382]
      Removal Trigger: reoptimization completed

R1#
R1#c
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#do sb
Interface              IP-Address      OK? Method Status                Protocol
FastEthernet0/0        12.0.0.1        YES manual up                    up     
FastEthernet0/1        14.0.0.1        YES manual up                    up     
Loopback0              1.1.1.1         YES manual up                    up     
Tunnel0                1.1.1.1         YES TFTP   up                    up     
Tunnel1                1.1.1.1         YES TFTP   administratively down down   
R1(config)#int tun1
R1(config-if)#no shut
R1(config-if)#end
R1#
R1#
*May 18 00:32:03.811: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel1, changed state to up
R1#
R1#
R1#
*May 18 00:32:05.003: %SYS-5-CONFIG_I: Configured from console by console
R1#sh mpls traff tun    

Name: R1_t0                               (Tunnel0) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 3)
    path option 5, type explicit R1_R2

  Config Parameters:
    Bandwidth: 55000    kbps (Global)  Priority: 6  6   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 55000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/1, 23
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 0, Tun_Instance 405
    RSVP Path Info:
      My Address: 14.0.0.1  
      Explicit Route: 14.0.0.4 34.0.0.4 34.0.0.3 23.0.0.3
                      23.0.0.2 2.2.2.2
      Record   Route:   NONE
      Tspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=55000 kbits, burst=1000 bytes, peak rate=55000 kbits
  History:
    Tunnel:
      Time since created: 2 hours, 30 minutes
      Time since path change: 6 seconds
      Number of LSP IDs (Tun_Instances) used: 405
    Current LSP:
      Uptime: 6 seconds
    Prior LSP:
      ID: path option 5 [404]
      Removal Trigger: path error
      Last Error: PCALC:: Can’t use link 12.0.0.1 on node 1.1.1.1

Name: R1_t1                               (Tunnel1) Destination: 2.2.2.2
  Status:
    Admin: up         Oper: up     Path: valid       Signalling: connected
    path option 10, type dynamic (Basis for Setup, path weight 1)
         
  Config Parameters:
    Bandwidth: 50000    kbps (Global)  Priority: 5  5   Affinity: 0×0/0xFFFF
    Metric Type: TE (default)
    AutoRoute:  enabled   LockDown: disabled  Loadshare: 50000    bw-based
    auto-bw: disabled
  Active Path Option Parameters:
    State: dynamic path option 10 is active
    BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
  InLabel  :  -
  OutLabel : FastEthernet0/0, implicit-null
  RSVP Signalling Info:
       Src 1.1.1.1, Dst 2.2.2.2, Tun_Id 1, Tun_Instance 231
    RSVP Path Info:
      My Address: 12.0.0.1  
      Explicit Route: 12.0.0.2 2.2.2.2
      Record   Route:   NONE
      Tspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
    RSVP Resv Info:
      Record   Route:   NONE
      Fspec: ave rate=50000 kbits, burst=1000 bytes, peak rate=50000 kbits
  History:
    Tunnel:
      Time since created: 1 hours, 8 minutes
      Time since path change: 8 seconds
      Number of LSP IDs (Tun_Instances) used: 231
    Current LSP:
      Uptime: 8 seconds
    Prior LSP:
      ID: path option 10 [220]
      Removal Trigger: tunnel shutdown

Add R5 as a P router between R1 & R2 in the previous lab, so that we can monitor packets based on MPLS EXP bits.

R3 —— R1 —— R5 —— R2 —— R4

Configuration

R3#

class-map TELNET
 match protocol telnet

class-map ICMP
 match protocol icmp

class-map ANY
 match any
policy-map SET_COS

class TELNET
 set cos 5

class ICMP
 set cos 1

class ANY
 set cos 2

interface FastEthernet0/0.100
 encapsulation dot1Q 100
 ip address 34.0.0.3 255.255.255.0
 service-policy output SET_COS

R1#
class-map COS7
 match cos 7
class-map COS6
 match cos 6
class-map COS5
 match cos 5
class-map COS4
 match cos 4
class-map COS3
 match cos 3
class-map COS2
 match cos 2
class-map COS1
 match cos 1
class-map COS0
 match cos 0

policy-map ETHERNET_OVER_MPLS

class COS7
 set mpls experimental 7
class COS6
 set mpls experimental 6
class COS5
 set mpls experimental 5
class COS4
 set mpls experimental 4
class COS3
 set mpls experimental 3
class COS2
 set mpls experimental 2
class COS1
 set mpls experimental 1
class COS0
 set mpls experimental 0

!
interface FastEthernet0/1.100
 description Connect to R3 via VLAN 100
 encapsulation dot1Q 100
 service-policy input ETHERNET_OVER_MPLS
 no cdp enable
 xconnect 2.2.2.2 1000 pw-class AToM
R5#
no class-map match-all EXP7
no class-map match-all EXP6
no class-map match-all EXP5
no class-map match-all EXP4
no class-map match-all EXP3
no class-map match-all EXP2
no class-map match-all EXP1
no class-map match-all EXP0

class-map match-all EXP7
  match mpls experimental topmost 7
class-map match-all EXP6
  match mpls experimental topmost 6
class-map match-all EXP5
  match mpls experimental topmost 5
class-map match-all EXP4
  match mpls experimental topmost 4
class-map match-all EXP3
  match mpls experimental topmost 3
class-map match-all EXP2
  match mpls experimental topmost 2
class-map match-all EXP1
  match mpls experimental topmost 1
class-map match-all EXP0
  match mpls experimental topmost 0
no policy-map EXP_COUNTERS

policy-map EXP_COUNTERS
class EXP7
class EXP6
class EXP5
class EXP4
class EXP3
class EXP2
class EXP1
class EXP0
class class-default
int fa0/0
 service-policy input EXP_COUNTERS
 service-policy output EXP_COUNTERS

Verification

 
Rack1R3#ping 34.0.0.4 rep 100

Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 8/32/84 ms
Rack1R3#telnet 34.0.0.4
Trying 34.0.0.4 … Open

Rack1R4>
Rack1R4>
Rack1R4>
Rack1R4>exit

[Connection to 34.0.0.4 closed by foreign host]
Rack1R3#telnet 34.0.0.4 80
Trying 34.0.0.4, 80 …
% Connection refused by remote host

Rack1R3#telnet 34.0.0.4 80
Trying 34.0.0.4, 80 …
% Connection refused by remote host

Rack1R3#
Rack1R3#
Rack1R3#sh policy-map interface
 FastEthernet0/0.100

  Service-policy output: SET_COS

    Class-map: TELNET (match-all)
      21 packets, 1350 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: protocol telnet
      QoS Set
        cos 5
          Packets marked 21

    Class-map: ICMP (match-all)
      100 packets, 11800 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: protocol icmp
      QoS Set
        cos 1
          Packets marked 100

    Class-map: ANY (match-all)
      2 packets, 128 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
      QoS Set
        cos 2
          Packets marked 2

    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any

Rack1R1#sh policy-map interface

 FastEthernet0/1.100

  Service-policy input: ETHERNET_OVER_MPLS

    Class-map: COS7 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  7
      QoS Set
        mpls experimental imposition 7
           Packets marked 0

    Class-map: COS6 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  6
      QoS Set
        mpls experimental imposition 6
           Packets marked 0

    Class-map: COS5 (match-all)
      21 packets, 1350 bytes

      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  5
      QoS Set
        mpls experimental imposition 5
           Packets marked 21

    Class-map: COS4 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  4
      QoS Set
        mpls experimental imposition 4
           Packets marked 0

    Class-map: COS3 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  3
      QoS Set
        mpls experimental imposition 3
           Packets marked 0
    Class-map: COS2 (match-all)
      2 packets, 128 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  2
      QoS Set
        mpls experimental imposition 2
           Packets marked 2

    Class-map: COS1 (match-all)
      100 packets, 11800 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  1
      QoS Set
        mpls experimental imposition 1
           Packets marked 100

    Class-map: COS0 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: cos  0
      QoS Set
        mpls experimental imposition 0

           Packets marked 0

    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
Rack1R5#sh policy-map interface fa0/0 input

 FastEthernet0/0

  Service-policy input: EXP_COUNTERS

    Class-map: EXP7 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 7

    Class-map: EXP6 (match-all) ! ROUTING(?) & CONTROL TRAFFIC
      36 packets, 2780 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 6

    Class-map: EXP5 (match-all) ! Telnet
      21 packets, 1518 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 5

    Class-map: EXP4 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps

      Match: mpls experimental topmost 4

    Class-map: EXP3 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 3

    Class-map: EXP2 (match-all) ! TCP PORT 80 generated via telnet 34.0.0.4 80
      2 packets, 144 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 2

    Class-map: EXP1 (match-all) ! Pings
      100 packets, 12600 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 1

    Class-map: EXP0 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps
      Match: mpls experimental topmost 0
    Class-map: class-default (match-any) ! Plain IP TRAFFIC (not MPLS)
      8 packets, 528 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any

Reference

http://fengnet.com/book/IOS_MPLS/ch13lev1sec6.html

Fa0/0        Fa0/1   Fa0/0       Fa0/0   S1/0               S1/0
R3 -------------- R1 ---------------- R2 --------FR-------- R4
                 (PE)                (PE)

Configuration

R1#
mpls ldp router-id Loopback0
mpls label protocol ldp
!
pseudowire-class AToM
 encapsulation mpls
 interworking ip
!
!
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
 ip address 12.0.0.1 255.255.255.0
 mpls ip

!
interface FastEthernet0/1
 no ip address
 no shut
!
interface FastEthernet0/1.100
 description Connect to R3 via VLAN 100
 encapsulation dot1Q 100
 no cdp enable
 xconnect 2.2.2.2 1000 pw-class AToM
!
router ospf 1
 log-adjacency-changes
 network 1.1.1.1 0.0.0.0 area 0
 network 12.0.0.1 0.0.0.0 area 0
!
ip classless
R2#
mpls ldp router-id Loopback0
mpls label protocol ldp
!
pseudowire-class AToM
 encapsulation mpls
 interworking ip
!
!
!
!
interface Loopback0
 ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
 ip address 12.0.0.2 255.255.255.0
 mpls ip
!
!
interface Serial1/0
 description Connect to R4 (CE2) via Frame PVC 204
 no ip address
 encapsulation frame-relay
 no shutdown
!
!
router ospf 1
 log-adjacency-changes
 network 2.2.2.2 0.0.0.0 area 0
 network 12.0.0.2 0.0.0.0 area 0
!
!
!
connect FR-VLAN Serial1/0 204 l2transport
 xconnect 1.1.1.1 1000 pw-class AToM
 !
!
!
!
R3#

interface FastEthernet0/0
 description Connected to R1
 no ip address

!
interface FastEthernet0/0.100
 encapsulation dot1Q 100
 ip address 34.0.0.3 255.255.255.0
R4#

interface Serial1/0
 no ip address
 encapsulation frame-relay

!
interface Serial1/0.1 point-to-point
 ip address 34.0.0.4 255.255.255.0
 frame-relay interface-dlci 402

Verification

Rack1R1#sh mpls l2transport summary
Destination address: 2.2.2.2, total number of vc: 1
  0 unknown, 1 up, 0 down, 0 admin down, 0 recovering
  1 active vc on MPLS interface Fa0/0
Rack1R1#show mpls l2transport binding
  Destination Address: 2.2.2.2,  VC ID: 1000
    Local Label:  18
        Cbit: 1,    VC Type: IP,    GroupID: 0
        MTU: 1500,   Interface Desc: n/a
        VCCV Capabilities: None
    Remote Label: 17
        Cbit: 1,    VC Type: IP,    GroupID: 0
        MTU: 1500,   Interface Desc: n/a
        VCCV Capabilities: None

Rack1R1#sh mpls l2transport vc 1000 detail
Local interface: Fa0/1.100 up, line protocol up, Eth VLAN 100 up
  MPLS VC type is IP, interworking type is IP
  Destination address: 2.2.2.2, VC ID: 1000, VC status: up
    Output interface: Fa0/0, imposed label stack {17}
    Preferred path: not configured
    Default path: active
    Tunnel label: imp-null, next hop 12.0.0.2
  Create time: 00:16:34, last status change time: 00:15:20
  Signaling protocol: LDP, peer 2.2.2.2:0 up
    MPLS VC labels: local 18, remote 17
    Group ID: local 0, remote 0
    MTU: local 1500, remote 1500
    Remote interface description:
  Sequencing: receive disabled, send disabled
  VC statistics:
    packet totals: receive 35, send 24
    byte totals:   receive 3500, send 2928
    packet drops:  receive 0, send 0
Rack1R2#sh mpls l2transport vc 1000 detail
Local interface: Se1/0 up, line protocol up, FR DLCI 204 up
  MPLS VC type is IP, interworking type is IP
  Destination address: 1.1.1.1, VC ID: 1000, VC status: up
    Output interface: Fa0/0, imposed label stack {18}
    Preferred path: not configured
    Default path: active
    Tunnel label: imp-null, next hop 12.0.0.1
  Create time: 00:23:41, last status change time: 00:15:52
  Signaling protocol: LDP, peer 1.1.1.1:0 up
    MPLS VC labels: local 17, remote 18
    Group ID: local 0, remote 0
    MTU: local 1500, remote 1500
    Remote interface description:
  Sequencing: receive disabled, send disabled
  VC statistics:
    packet totals: receive 24, send 35
    byte totals:   receive 2400, send 4270
    packet drops:  receive 0, send 0

Rack1R3#ping 34.0.0.4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/42/72 ms

Rack1R1#show mpls l2transport hw-capability interface fa0/1
Interface FastEthernet0/1

Transport type FR DLCI
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM AAL5
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM CELL
  Core functionality:
    MPLS label disposition supported
    Control word processing not supported
    Sequence number processing not supported
    VCCV Type 1 processing not supported
  Edge functionality:
    Not supported

Transport type Eth VLAN
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    MPLS label imposition supported
    Control word processing supported
    Sequence number processing not supported

Transport type Ethernet
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    MPLS label imposition supported
    Control word processing supported
    Sequence number processing not supported

Transport type HDLC
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type PPP
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type CEM
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM VCC CELL
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM VPC CELL
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type VFI
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Rack1R2#sh mpls l2transport hw-capability ?
  interface  Show MPLS L2 transport interface capability

Rack1R2#sh mpls l2transport hw-capability int
Rack1R2#sh mpls l2transport hw-capability interface atm2/0
Interface ATM2/0

Transport type FR DLCI
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM AAL5
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM CELL
  Core functionality:
    MPLS label disposition supported
    Control word processing not supported
    Sequence number processing not supported
    VCCV Type 1 processing not supported
  Edge functionality:
    Not supported

Transport type Eth VLAN
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type Ethernet
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type HDLC
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type PPP
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type CEM
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM VCC CELL
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type ATM VPC CELL
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

Transport type VFI
  Core functionality:
    MPLS label disposition supported
    Control word processing supported
    Sequence number processing not supported
    VCCV Type 1 processing supported
  Edge functionality:
    Not supported

NOTE that MTU have to match. Otherwise, xconnect does not come up.

Rack1R2(config)#int s1/0
Rack1R2(config-if)#mtu ?
  <64-18000>  MTU size in bytes

Rack1R2(config-if)#mtu 1000
Rack1R2(config-if)#end
Rack1R2#
Rack1R2#
Rack1R2#
Rack1R2#
Rack1R2#
Rack1R2#sh mpls l2transport vc 1000 detail
Local interface: Se1/0 up, line protocol up, FR DLCI 204 up
  MPLS VC type is IP, interworking type is IP
  Destination address: 1.1.1.1, VC ID: 1000, VC status: down
    Output interface: if-?(0), imposed label stack {}
    Preferred path: not configured
    Default path: active
    Tunnel label: 0, next hop Invalid MOI
  Create time: 00:00:12, last status change time: 00:00:12
  Signaling protocol: LDP, peer 1.1.1.1:0 up
    MPLS VC labels: local 18, remote 16
    Group ID: local 0, remote 0
    MTU: local 1000, remote 1500
    Remote interface description: Connect to R3 via VLAN 100
  Sequencing: receive disabled, send disabled
  VC statistics:
    packet totals: receive 1952, send 1942
    byte totals:   receive 195200, send 236924
    packet drops:  receive 0, send 0

R7 --- R1(PE) --- R3(P) --- R2(PE) ---- R8

Default INE SP topology need to be modified to get R2 Fa0/0 connected to R8 Fa1/2 (instead of R7 Fa1/2)

Configuration

 

R1_PE1#
!
hostname R1_PE1
!
mpls ldp router-id Loopback0
!
!
interface Loopback0
 ip address 123.1.1.1 255.255.255.255
 no clns route-cache
!
interface FastEthernet0/0
 no ip address
 duplex full
 no clns route-cache
 no shut
!
interface FastEthernet0/0.100
 encapsulation dot1Q 100
 no cdp enable
 xconnect 123.1.1.3 123 encapsulation mpls
!
!
interface Serial2/1
 ip address 13.0.0.1 255.255.255.0
 mpls ip
 no shut
!
router ospf 100
 log-adjacency-changes
 network 13.0.0.1 0.0.0.0 area 0
 network 123.1.1.1 0.0.0.0 area 0
!
ip classless
!

R3_P#
!
hostname R3_P
mpls ldp router-id Loopback0
!
!
interface Loopback0
 ip address 123.1.1.3 255.255.255.255
!
interface Serial1/2
 ip address 13.0.0.3 255.255.255.0
 mpls ip
 no shut
!
interface Serial1/3
 ip address 23.0.0.3 255.255.255.0
 mpls ip
 no shut
!
router ospf 100
 log-adjacency-changes
 network 13.0.0.3 0.0.0.0 area 0
 network 23.0.0.3 0.0.0.0 area 0
 network 123.1.1.3 0.0.0.0 area 0
!

R2_PE2#sh run

hostname R2_PE2
!
mpls ldp router-id Loopback0

!
interface Loopback0
 ip address 123.1.1.2 255.255.255.255
 no clns route-cache
!
interface FastEthernet0/0
 no ip address
 duplex full
 no shut
!
interface FastEthernet0/0.100
 encapsulation dot1Q 100
 no cdp enable
 xconnect 123.1.1.3 123 encapsulation mpls
!
interface Serial2/1
 ip address 23.0.0.2 255.255.255.0
 mpls ip
 no shut
!
router ospf 100
 log-adjacency-changes
 network 23.0.0.2 0.0.0.0 area 0
 network 123.1.1.2 0.0.0.0 area 0
!
ip classless

Verification

R7#

vlan 100
!
interface Vlan100
 ip address 100.100.100.7 255.255.255.0

interface FastEthernet1/1
 description connected to R1 Fa0/0
 switchport mode trunk
 no shut

R8#

vlan 100
!
interface Vlan100
 ip address 100.100.100.8 255.255.255.0

interface FastEthernet1/2
 description connected to R2 Fa0/0
 switchport mode trunk
 no shut

R1_PE1#sh mpls l2transport vc

Local intf     Local circuit        Dest address    VC ID      Status   
-------------  -------------------- --------------- ---------- ----------
Fa0/0.100      Eth VLAN 100         123.1.1.2       100        UP       

R7#ping 100.100.100.8

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 100.100.100.8, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/91/152 ms

R7#sh arp
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  100.100.100.7           -   cc06.2f08.0000  ARPA   Vlan100
Internet  100.100.100.8          43   cc07.2f10.0000  ARPA   Vlan100

(CE1)R4 — R1 (PE) — R3 (P) — R2(PE) — R5 (CE2)

Configuration

R1-PE1#
!
hostname R1-PE1
!
!
ip vrf VPN_A
 rd 10:20
 route-target export 100:200
 route-target import 100:200
!
!
interface Loopback0
 ip address 100.100.100.1 255.255.255.255
!
!
interface Serial1/0
 encapsulation frame-relay
!
interface Serial1/0.1 point-to-point
 ip vrf forwarding VPN_A
 ip address 14.0.0.1 255.255.255.0
 frame-relay interface-dlci 104  
!
interface Serial1/1
 ip address 13.0.0.1 255.255.255.0
 mpls ip
!
router ospf 1
 network 13.0.0.1 0.0.0.0 area 0
 network 100.100.100.1 0.0.0.0 area 0
!
router bgp 123
 no synchronization
 bgp log-neighbor-changes
 neighbor 100.100.100.2 remote-as 123
 neighbor 100.100.100.2 update-source Loopback0
 no auto-summary
 !
 address-family vpnv4
  neighbor 100.100.100.2 activate
  neighbor 100.100.100.2 send-community both
 exit-address-family
 !
 address-family ipv4 vrf VPN_A
  neighbor 14.0.0.4 remote-as 100
  neighbor 14.0.0.4 activate
  neighbor 14.0.0.4 as-override
  no synchronization
 exit-address-family

R3-P#sh run

hostname R3-P
!
!
!
interface Loopback0
 ip address 100.100.100.3 255.255.255.255
!
!
interface Serial1/2
 ip address 13.0.0.3 255.255.255.0
 mpls ip
!
interface Serial1/3
 ip address 23.0.0.3 255.255.255.0
 mpls ip
!
router ospf 1
 log-adjacency-changes
 network 13.0.0.3 0.0.0.0 area 0
 network 23.0.0.3 0.0.0.0 area 0
 network 100.100.100.3 0.0.0.0 area 0
 

R2-PE#sh run
!
hostname R2-PE
!
!
ip vrf VPN_A
 rd 10:20
 route-target export 100:200
 route-target import 100:200
!
!
interface Loopback0
 ip address 100.100.100.2 255.255.255.255
!
!
interface Serial1/0
 no ip address
 encapsulation frame-relay
!
interface Serial1/0.1 point-to-point
 ip vrf forwarding VPN_A
 ip address 25.0.0.2 255.255.255.0
 frame-relay interface-dlci 205  
!
interface Serial1/1
 ip address 23.0.0.2 255.255.255.0
 mpls ip
 serial restart-delay 0
!
!
router ospf 1
 log-adjacency-changes
 network 23.0.0.2 0.0.0.0 area 0
 network 100.100.100.2 0.0.0.0 area 0
!
router bgp 123
 no synchronization
 bgp log-neighbor-changes
 neighbor 100.100.100.1 remote-as 123
 neighbor 100.100.100.1 update-source Loopback0
 no auto-summary
 !
 address-family vpnv4
  neighbor 100.100.100.1 activate
  neighbor 100.100.100.1 send-community both
 exit-address-family
 !
 address-family ipv4 vrf VPN_A
  neighbor 25.0.0.5 remote-as 100
  neighbor 25.0.0.5 activate
  neighbor 25.0.0.5 as-override
  no synchronization
 exit-address-family
 
R4-CE1#sh run
!

hostname R4-CE1

!

!

interface Loopback0

 ip address 10.4.4.1 255.255.255.0

!

!

interface Serial1/0

 no ip address

 encapsulation frame-relay

!

interface Serial1/0.1 point-to-point

 ip address 14.0.0.4 255.255.255.0

 frame-relay interface-dlci 401  

!

!

router bgp 100

 no synchronization

 bgp log-neighbor-changes

 network 10.4.4.0 mask 255.255.255.0

 network 14.0.0.0 mask 255.255.255.0

 neighbor 14.0.0.1 remote-as 123

 no auto-summary

!

R5-CE2#sh run

!

hostname R5-CE2

!

!

interface Loopback0

 ip address 10.5.5.1 255.255.255.0

!

!

interface Serial1/0

 no ip address

 encapsulation frame-relay

!

interface Serial1/0.1 point-to-point

 ip address 25.0.0.5 255.255.255.0

 frame-relay interface-dlci 502  

!

!

router bgp 100

 no synchronization

 bgp log-neighbor-changes

 network 10.5.5.0 mask 255.255.255.0

 network 25.0.0.0 mask 255.255.255.0

 neighbor 25.0.0.2 remote-as 123

 no auto-summary

!

Verification

R1-PE1#sh mpls ldp neighbor
    Peer LDP Ident: 100.100.100.3:0; Local LDP Ident 100.100.100.1:0
        TCP connection: 100.100.100.3.56829 - 100.100.100.1.646
        State: Oper; Msgs sent/rcvd: 233/233; Downstream
        Up time: 03:15:44
        LDP discovery sources:
          Serial1/1, Src IP addr: 13.0.0.3
        Addresses bound to peer LDP Ident:
          13.0.0.3        23.0.0.3        100.100.100.3  
R1-PE1#sh mpls ip binding  
  13.0.0.0/24
        in label:     imp-null 
        out label:    imp-null  lsr: 100.100.100.3:0
  23.0.0.0/24
        in label:     18       
        out label:    imp-null  lsr: 100.100.100.3:0  inuse
  100.100.100.1/32
        in label:     imp-null 
        out label:    16        lsr: 100.100.100.3:0
  100.100.100.2/32
        in label:     16       
        out label:    17        lsr: 100.100.100.3:0  inuse
  100.100.100.3/32
        in label:     17       
        out label:    imp-null  lsr: 100.100.100.3:0  inuse

R1-PE1#sh ip bgp vpnv4 vrf VPN_A ?
  A.B.C.D            IP prefix <network>/<length>, e.g., 35.0.0.0/8
  A.B.C.D            Network in the BGP routing table to display
  cidr-only          Display only routes with non-natural netmasks
  community          Display routes matching the communities
  community-list     Display routes matching the community-list
  dampening          Display detailed information about dampening
  extcommunity-list  Display routes matching the extcommunity-list
  filter-list        Display routes conforming to the filter-list
  inconsistent-as    Display only routes with inconsistent origin ASs
  labels             Display BGP labels for prefixes
  neighbors          Detailed information on TCP and BGP neighbor connections
  oer-paths          Display all oer controlled paths
  paths              Path information
  peer-group         Display information on peer-groups
  pending-prefixes   Display prefixes pending deletion
  prefix-list        Display routes matching the prefix-list
  quote-regexp       Display routes matching the AS path "regular expression"
  regexp             Display routes matching the AS path regular expression
  replication        Display replication status of update-group(s)
  rib-failure        Display bgp routes that failed to install in the routing
                     table (RIB)
  route-map          Display routes matching the route-map
  summary            Summary of BGP neighbor status
  update-group       Display information on update-groups
  |                  Output modifiers
  <cr>

R1-PE1#sh ip bgp vpnv4 vrf VPN_A
BGP table version is 19, local router ID is 100.100.100.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 10:20 (default for vrf VPN_A)
*> 10.4.4.0/24      14.0.0.4                 0             0 100 i
*>i10.5.5.0/24      100.100.100.2            0    100      0 100 i
r> 14.0.0.0/24      14.0.0.4                 0             0 100 i
*>i25.0.0.0/24      100.100.100.2            0    100      0 100 i

R1-PE1#sh ip bgp vpnv4 vrf VPN_A 10.4.4.0/24
BGP routing table entry for 10:20:10.4.4.0/24, version 18
Paths: (1 available, best #1, table VPN_A)
  Advertised to update-groups:
     1        
  100
    14.0.0.4 from 14.0.0.4 (14.0.0.4)
      Origin IGP, metric 0, localpref 100, valid, external, best
      Extended Community: RT:100:200
      mpls labels in/out 19/nolabel
R1-PE1#sh ip bgp vpnv4 vrf VPN_A 10.5.5.0/24
BGP routing table entry for 10:20:10.5.5.0/24, version 13
Paths: (1 available, best #1, table VPN_A)
  Advertised to update-groups:
     2        
  100
    100.100.100.2 (metric 129) from 100.100.100.2 (100.100.100.2)
      Origin IGP, metric 0, localpref 100, valid, internal, best
      Extended Community: RT:100:200
      mpls labels in/out nolabel/19
R1-PE1#sh mpls ip binding
  13.0.0.0/24
        in label:     imp-null 
        out label:    imp-null  lsr: 100.100.100.3:0
  23.0.0.0/24
        in label:     18       
        out label:    imp-null  lsr: 100.100.100.3:0  inuse
  100.100.100.1/32
        in label:     imp-null 
        out label:    16        lsr: 100.100.100.3:0
  100.100.100.2/32
        in label:     16       
        out label:    17        lsr: 100.100.100.3:0  inuse
  100.100.100.3/32
        in label:     17       
        out label:    imp-null  lsr: 100.100.100.3:0  inuse
R1-PE1#sh mpls ldp bindings detail
  tib entry: 13.0.0.0/24, rev 10
        local binding:  tag: imp-null
          Advertised to:
          100.100.100.3:0       
        remote binding: tsr: 100.100.100.3:0, tag: imp-null
  tib entry: 23.0.0.0/24, rev 8
        local binding:  tag: 18
          Advertised to:
          100.100.100.3:0       
        remote binding: tsr: 100.100.100.3:0, tag: imp-null
  tib entry: 100.100.100.1/32, rev 2
        local binding:  tag: imp-null
          Advertised to:
          100.100.100.3:0       
        remote binding: tsr: 100.100.100.3:0, tag: 16
  tib entry: 100.100.100.2/32, rev 4
        local binding:  tag: 16
          Advertised to:
          100.100.100.3:0       
        remote binding: tsr: 100.100.100.3:0, tag: 17
  tib entry: 100.100.100.3/32, rev 6
        local binding:  tag: 17
          Advertised to:
          100.100.100.3:0       
        remote binding: tsr: 100.100.100.3:0, tag: imp-null