Fault symptom, Fault analysis, Troubleshooting procedure – Panasonic NN46240-710 User Manual

Page 145: Summary

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Nortel Secure Router 8000 Series

Troubleshooting - VPN___________

4 MPLS L2VPN troubleshooting

4.3.9 CEs cannot communicate by using the accessing mode of

VLAN

Fault symptom

CEs adopt the accessing mode of VLAN. After the VLAN ID is changed, CEs on two ends
cannot communicate.

Fault analysis

To modify the VLAN ID, you need to modify VC IDs of the AC interfaces along the

packet-sending direction in turn. To make sure the modification takes effect, run the

shutdown

command and then the

undo shutdown

command on each VLAN interface.

Troubleshooting procedure

Step 1

Use the

vlan-type

command on the AC interfaces along CE to PE and PE to CE direction to

modify the VLAN ID.

Step 2

Use the

shutdown

command on the AC interfaces to disable the interfaces.

Step 3

Use the

undo shutdown

command on the interfaces to enable them.

—End

Summary

When the VLAN access is adopted between CE and PE, the minimum VLAN ID of interfaces

on both ends of the AC that the packet passes by must be consistent. Otherwise, the packet
cannot be forwarded normally.

The minimum VLAN IDs of the CE interfaces on both ends of the tunnel can be different.

4.3.10 CEs cannot access each other though the static VC is up

Fault symptom

After the static VC is configured, the static VC is Up. CEs, however, cannot access each other.

For example:

[PE1] display mpls static-l2vc

Total svc connections:

1, 1 up, 0 down

*Client Interface

AC Status

VC State

VC ID

VC Type

Destination

Transmit VC Label

Receive VC Label

Control Word

VCCV Capability

Ethernet2/0/1 is up

ethernet

2.2.2.2

200

100

Disable

Issue 5.3 (30 March 2009)

Nortel Networks Inc.

4-35