When an LDP session is established for the L2VPN service and another LDP session flaps, the L2VPN service is interrupted.

Trouble Ticket Number

DTS2024030415759

Symptom

When an LDP session is established for the L2VPN service and another LDP session flaps, the L2VPN service is interrupted.

Condition

An LDP session is established for the L2VPN service, and another LDP session flaps.

Impact

The L2VPN service is interrupted.

Severity

Minor

Root Cause

When an LDP session with the label space ID being a non-0 value flaps, the flapping event is incorrectly sent to the L2VPN module. As a result, the L2VPN service is interrupted.

Solution

When an LDP session with the label space ID being a non-0 value flaps, the flapping event will not be sent to the L2VPN module.

Solution Impact

None

Problem Resolved in

V300R023C00SPC100

Involved Models

AR600 (excluding AR617VW-LTE4EA, AR617VW-LTE4, AR617VW, AR611W-LTE4CN, AR611W, AR611, AR611-S, AR651F-Lite, and AR651C), AR6100, AR6200, AR6300, RU-5G

Precaution

If the problem has occurred, install the patch and run the reset mpls ldp peer peer-id command in the user view to restart the LDP session with the specified peer.