Summary:
LAG protection is configured on an N1EGS4/N3EGS4/N1EMS4 board. When some E-Line or E-LAN services are deleted from LAG ports, all services in the LAG are interrupted.
[Problem Description]
Trigger conditions:
The problem is triggered when the following conditions are all met:
1. The equipment runs a version earlier than V100R009C02SPC010 (board version: 7.52).
2. LAG protection is configured on the board.
3. Some E-Line or E-LAN services are deleted from LAG ports.
Symptom:
LAG protection is configured on an N1EGS4/N3EGS4/N1EMS4 board on Transmission network. When some E-Line or E-LAN services are deleted from LAG ports, all services in the LAG are interrupted.
Identification method:
1. The equipment runs a version earlier than V100R009C02SPC010 (board version: 7.52).
2. LAG protection is configured on the board.
3. Some E-Line or E-LAN services are deleted from LAG ports.
[Root Cause]
When one or more services are deleted from LAG ports, the software does not check whether other services exist but immediately clears the service forwarding entries. The other services left in the LAG cannot find forwarding paths and are discarded by the chip. As a result, all the services in the LAG are interrupted.
[Impact and Risk]
When E-LAN or E-Line services in sa
[Measures and Solutions]
Recovery measures:
Use either of the following methods to recover the services:
4. Add the Ethernet services that have been deleted from the LAG.
5. Cold reset the data board.
Preventive measures:
None
Solution:
Upgrade the NE to V100R009C02SPC010 (board version: 7.52) or a later version.
Material handling after replacement: Thunder-link is a professional Huawei Transmission distributor
N/A
[Rectification Scope and Time Requirements]
N/A
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