11 vc is down though ac is up, Fault symptom, Fault analysis – Panasonic NN46240-710 User Manual
Page 147: Troubleshooting procedure, Summary, 11 vc is down though ac is up -37, Vc is down though ac is up
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Nortel Secure Router 8000 Series
Troubleshooting - VPN___________
4 MPLS L2VPN troubleshooting
4.3.11 VC is down though AC is up
Fault symptom
After the configuration of Layer 2 VC, the AC is Up. However, the ping of the peer fails. After
using the
display mpls l2vc
command, you will find the status of the VC is Down and all the
remote VC label and the remote VC MTU are zeros, which are invalid.
[PE] display mpls l2vc
Total ldp vc : 1
0 up
1 down
Client Interface
Atm5/0/0
Session State
up
AC Status
up
VC State
down
VC ID
100
VC Type
ppp
Destination
3.3.3.3
Local VC Label
119809
Remote VC Label
0
Control Word
Disable
Local VC MTU
1500
Remote VC MTU
0
Tunnel Policy Name
--
Traffic Behavior Name
--
PW Template Name
--
Create time
0 days,
0 hours,
20 minutes
UP time
0 days,
0 hours,
0 minutes,
Last change time
0 days,
0 hours,
4 minutes,
Fault analysis
Possible causes are:
•
The encapsulation types on two ends are different.
•
The peer is not configured with VC.
Troubleshooting procedure
Step 1 Check that the correct peer addresses are configured on PEs of two ends.
Step 2 Check that the VC IDs on two ends are consistent.
Step 3 Check that the encapsulation types on two ends are consistent.
Step 4 Check that the local VC MTU and the remote VC MTU are consistent.
Step 5 Check that the control word is enabled or disabled on both ends.
—End
Summary
VC uses LDP as the signaling. The negotiation of following parameters is required:
• VC type
Issue 5.3 (30 March 2009)
Nortel Networks Inc.
4-37