Troubleshooting guide

8-40
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 8 Troubleshooting Tag and MPLS Switching Connections
Troubleshooting MPLS ATM Connections
Note More precise outputs like the table of the labels for a particular VRF can be seen using the show ip
bgp vpnv4 all tags command.
Step 2 Enter the show ip bgp vpnv4 all command to display the next hop connections in the VPN.
8540-ATM-PE1# show ip bgp vpnv4 all
BGP table version is 164, local router ID is 102.0.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf 1)
*> 11.0.0.0 11.0.0.1 0 0 1 ?
*>i14.0.0.0 104.0.0.4 0 100 0 3 ?
*> 101.0.0.0 11.0.0.1 0 0 1 ?
*>i105.0.0.0 104.0.0.4 0 100 0 3 ?
* i172.20.0.0 104.0.0.4 0 100 0 3 ?
*> 11.0.0.1 0 0 1 ?
8540-ATM-PE1#
Step 3 Check the Next Hop column. It should display the IP addresses of the directly connected CE node and
the PE node of the VPN.
Step 4 Enter the show ip protocols vrf command to display the routing protocol information associated with a
VRF.
8540-ATM-PE1# show ip protocols vrf 1
Routing Protocol is "bgp 2"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
IGP synchronization is disabled
Automatic route summarization is disabled
Neighbor(s):
Address FiltIn FiltOut DistIn DistOut Weight RouteMap
11.0.0.1
Maximum path: 1
Routing for Networks:
Routing Information Sources:
Gateway Distance Last Update
11.0.0.1 20 1d15h
104.0.0.4 200 1d14h
Distance: external 20 internal 200 local 200
8540-ATM-PE1#