MPLS Troubleshooting commands
November 29, 2006 at 6:10 am | In Blogroll, MPLS, VPN | Leave a Comment1. Control plane
PE1#sh ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 50.50.50.2 YES NVRAM up up Serial0/0 150.1.1.34 YES manual up up Serial0/1 150.1.1.18 YES manual up up Serial0/2 unassigned YES manual administratively down down Serial0/3 192.168.1.49 YES manual up up Loopback0 192.168.1.17 YES manual up up PE1#show ip cef summary IP CEF with switching (Table Version 18), flags=0x0 18 routes, 0 reresolve, 0 unresolved (0 old, 0 new), peak 6 44 leaves, 46 nodes, 51304 bytes, 52 inserts, 8 invalidations 0 load sharing elements, 0 bytes, 0 references universal per-destination load sharing algorithm, id C55C895D 3(0) CEF resets, 0 revisions of existing leaves Resolution Timer: Exponential (currently 1s, peak 1s) 0 in-place/0 aborted modifications refcounts: 12657 leaf, 12544 node Table epoch: 0 (18 entries at this epoch) Adjacency Table has 5 adjacencies PE1#show mpls forwarding-table Local Outgoing Prefix Bytes tag Outgoing Next Hop tag tag or VC or Tunnel Id switched interface 16 Pop tag 192.168.1.81/32 0 Se0/3 point2point 17 Pop tag 192.168.1.64/28 0 Se0/3 point2point 18 16 192.168.1.33/32 0 Se0/3 point2point 19 Untagged 10.1.1.16/28[V] 0 Se0/1 point2point 20 Untagged 10.1.1.49/32[V] 0 Se0/1 point2point 21 Aggregate 150.1.1.16/28[V] 0 22 Untagged 10.2.1.16/28[V] 0 Se0/0 point2point 23 Untagged 10.2.1.49/32[V] 0 Se0/0 point2point 24 Aggregate 150.1.1.32/28[V] 0
PE1#sh mpls interfaces
Interface IP Tunnel Operational
Serial0/3 Yes (ldp) No Yes
PE1#show mpls forwarding-table detail | in 150.1.1.16
21 Aggregate 150.1.1.16/28[V] 0
PE1#show mpls forwarding-table detail | b 150.1.1.16
21 Aggregate 150.1.1.16/28[V] 0
MAC/Encaps=0/0, MRU=0, Tag Stack{}
VPN route: Customer_A
No output feature configured
Per-packet load-sharing
PE1#show mpls forwarding-table vrf Customer_A 150.1.1.16 28
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
21 Aggregate 150.1.1.16/28[V] 0
PE1#show mpls forwarding-table vrf Customer_A 150.1.1.16 28 detail
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
21 Aggregate 150.1.1.16/28[V] 0
MAC/Encaps=0/0, MRU=0, Tag Stack{}
VPN route: Customer_A
No output feature configured
Per-packet load-sharing
PE1#show tag-switching tdp parameters
Protocol version: 1
Downstream tag generic region: min tag: 16; max tag: 100000
Session hold time: 180 sec; keep alive interval: 60 sec
Discovery hello: holdtime: 15 sec; interval: 5 sec
Discovery directed hello: holdtime: 90 sec; interval: 10 sec
Downstream on Demand max hop count: 255
LDP for directed sessions
LDP initial/maximum backoff: 15/120 sec
LDP loop detection: off
PE1#show mpls ldp parameters
Protocol version: 1
Downstream label generic region: min label: 16; max label: 100000
Session hold time: 180 sec; keep alive interval: 60 sec
Discovery hello: holdtime: 15 sec; interval: 5 sec
Discovery targeted hello: holdtime: 90 sec; interval: 10 sec
Downstream on Demand max hop count: 255
LDP for targeted sessions
LDP initial/maximum backoff: 15/120 sec
LDP loop detection: off
2. Data plane
Fixed font size and tab space
November 29, 2006 at 5:46 am | In Blogroll | Leave a Comment<pre> <font size="1" face="Courier New">PE1#<strong>sh mpls forwarding-table</strong>Local Outgoing Prefix Bytes tag Outgoing Next Hop tag tag or VC or Tunnel Id switched interface 16 0 192.168.1.81/32 0 Se0/3 point2point 17 Aggregate 150.1.1.32/28[V] 0 </font> </pre>The above code will displace in WS as followsPE1#sh mpls forwarding-table Local Outgoing Prefix Bytes tag Outgoing Next Hop tag tag or VC or Tunnel Id switched interface 16 0 192.168.1.81/32 0 Se0/3 point2point 17 Aggregate 150.1.1.32/28[V] 0
Show MPLS label stack
November 15, 2006 at 12:16 am | In MPLS, VPN | Leave a CommentPE1#sh mpls forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
16 0 192.168.1.81/32 0 Se0/3 point2point
17 Aggregate 150.1.1.32/28[V] 0
20 Aggregate 150.1.1.16/28[V] 0
21 Untagged 10.1.1.16/28[V] 0 Se0/1 point2point
22 Untagged 10.1.1.49/32[V] 0 Se0/1 point2point
23 0 192.168.1.64/28 0 Se0/3 point2point
24 17 192.168.1.33/32 0 Se0/3 point2point
26 Untagged 10.2.1.16/28[V] 0 Se0/0 point2point
27 Untagged 10.2.1.49/32[V] 0 Se0/0 point2point
PE1#sh mpls forwarding-table label 24
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
24 17 192.168.1.33/32 0 Se0/3 point2point
PE1#sh mpls forwarding-table vrf Customer_A
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
17 Aggregate 150.1.1.32/28[V] 0
26 Untagged 10.2.1.16/28[V] 0 Se0/0 point2point
27 Untagged 10.2.1.49/32[V] 0 Se0/0 point2point
PE1#sh mpls forwarding-table vrf Customer_A 10.1.2.16 detail
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
None 17 10.1.2.16/28 0 Se0/3 point2point
MAC/Encaps=4/12, MRU=1496, Tag Stack{17 20}
0F008847 0001100000014000
No output feature configured
Per-packet load-sharing
Protected: Simple MPLS VPN Lab – EIGRP in the core backbone, CE run RIPv2
November 9, 2006 at 11:29 pm | In MPLS, VPN | Enter your password to view commentsProtected: MPLS topics that need reviewing
November 9, 2006 at 11:24 am | In MPLS, VPN | Enter your password to view comments
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