Panasonic NN46240-710 - Manual (Page 132)

4 MPLS L2VPN troubleshooting
Nortel Secure Router 8000 Series
_________ Troubleshooting - VPN
Fault analysis
The Secure Router 8000 Series does not necessarily require a VC peer to use the remote MPLS
LSR ID. When using the MPLS LDP, you must use the LSR-ID specified in the MPLS LDP
view as the LSR-ID. Therefore, the vC peer can be the remote MPLS LSR ID or the 32-bit
mask address of a loopback interface. Establish the session between the two ends by using the
remote peer command.
An LSR cannot establish a session or LSP with itself. If a VC between an LSR and its remote is
configured on S-PE where PW switching is performed, then, this VC cannot be Up. The remote
address used for PW switching cannot be the address of the local router.
Troubleshooting procedure
Step 1 Check the peer IP address of the VC on S-PE.
Step 2 Modify the peer IP address used in the PW switching to the nonlocal S-PE router address.
—End
Summary
When you configure a multihop PW, note that a VC cannot establish between S-PE and U-PE.
4.3.4 PW attributes cannot be changed by using the reset pw
command
Fault symptom
After PW configuration on PE, you change PW attributes.
Use the reset pw template command and the reset pw vc-id command. Find that PW attributes
are unchanged.
# Check the configuration of the PW template on PE:
[PE] display pw-template pwt1
PW Template Name
PeerIP
Tnl Policy Name
PW Type
CtrlWord
MTU
MaxAtmCells
VCCV Capability
Fragmentation
Behavior Name
pwt1
1.1.1.1
Unknown
Disable
1500
1
Disable
Disable
Total PW : 1, Static PW : 1, LDP PW : 0
# Configure a PW by applying the PW template:
[PE-Atm2/1/0.100] mpls l2vc pw-template pwt1 2.2.2.2 100
# View the PW configuration:
[PE-Atm2/1/0.100] display mpls l2vc 100
Total ldp vc : 1 0 up 1 down
4-22 Nortel Networks Inc. Issue 5.3 (30 March2009)