Panasonic NN46240-710 - Manual (Page 127)

Nortel Secure Router 8000 Series
Troubleshooting - VPN___________ 4 MPLS L2VPN troubleshooting
If the fault is still not rectified, check that the local PE is configured with the IP address of the
remote CE.
If the fault persists, contact Nortel technical personnel.
—End
4.3 Troubleshooting cases
This section provides the following troubleshooting cases:
VC type is not supported when setting up a PW on an ATM subinterface
A static PW cannot be switched with other PWs
Switch-L2VC is down after PW switching configuration
PW attributes cannot be changed by using the reset pw command
VC is up but the PPP session cannot establish
VC under the interface is missing after the link protocol changes
Both the session and the AC are up, but the VC cannot be up
Ethernet interconnects with ATM, the VC is up, but the ping between CEs fails
CEs cannot communicate by using the accessing mode of VLAN
CEs cannot access each other though the static VC is up
VC is down though AC is up
Large-sized packets are lost between CEs on two ends of Layer 2 VPN
Failure to establish the MPLS LDP session between PEs when RIP-1 is used in the Layer 2
VPN backbone
4.3.1 VC type is not supported when setting up a PW on an ATM
subinterface
Fault symptom
Configuration of PWE3 is required. After a PW establishes on the ATM subinterface of U-PE,
use the display mpls l2vc command to check it. In the output, VC Type is Unsupport. For
example:
[Nortel] interface atm 2/1/0.100
[Nortel-Atm2/1/0.100] mpls l2vc 3.3.3.8 33
[Nortel-Atm2/1/0.100] display mpls l2vc interface atm 2/1/0.100
*Client Interface
Session State
AC State
VC State
VC ID
VC Type
Destination
Local Group ID
Remote Group ID
Local VC Label
Remote VC Label
Atm2/1/0.100 is up
down
down
down
33
Unsupport
3.3.3.8
0
0
119809
0
Issue 5.3 (30 March 2009) Nortel Networks Inc. 4-17