Troubleshooting Mpls Configuration - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
[3Com] mpls lsr-id 172.16.1.2
[3Com] mpls
[3Com] mpls ldp
# Configure IP address and enable LDP on SERIAL interface 1/0/0.
[3Com] interface serial 1/0/0
[3Com-Serial1/0/0] ip address 100.10.1.1 255.255.255.0
[3Com-Serial1/0/0] mpls ldp enable
[3Com-Serial1/0/0] quit
# Configure OSPF on the interfaces connecting Router C and Router B.
[3Com] route id 172.16.1.2
[3Com] ospf
[3Com-ospf] area 0
[3Com-ospf-area-0.0.0.0] network 100.10.1.0 0.0.0.255
4) Configuration on Router D:
[3Com] interface ethernet 2/0/1
[3Com-Ethernet2/0/1] ip address 172.17.1.2 255.255.0.0
# Configure LSR ID and enable MPLS and LDP.
[3Com] mpls lsr-id 172.17.1.2
[3Com] mpls
[3Com] mpls ldp
# Configure IP address and enable LDP on Ethernet interface 2/0/1.
[3Com] interface ethernet 2/0/1
[3Com-Ethernet2/0/1] ip address 172.17.1.2 255.255.0.0
[3Com-Ethernet2/0/1] mpls ldp enable
# Configure OSPF on the interfaces connecting Router D and Router B.
[3Com] route id 172.17.1.2
[3Com] ospf
[3Com-ospf] area 0
[3Com-ospf-area-0.0.0.0] network 172.17.0.0 0.0.255.255

2.6 Troubleshooting MPLS Configuration

Symptom: Session links cannot be setup with the peer after LDP is enabled on the
interface.
Troubleshooting:
Cause 1: Loop detection configuration is different at both ends.
Measure: Check loop detection configuration at both end to see if one end is configured
while the other end is not.
Chapter 2 MPLS Basic Capability Configuration
3Com Corporation
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