LAN access service
Network topology:
Layer 2 switch -> MA5620 -> MA5600T (V800R006C02)
The GPON service of
the MA5600T uses the solution of binding GEM ports to priorities.
That is, the priority bound to traffic streams of the MA5620 is 0 and the
priority bound to traffic streams of the management address of the MA5620 is 3.
Users can remotely ping the management IP address of the Layer 2 switch but
cannot telnet it.
- The Layer 2 switch filters out telnet packets by ACL rules configured.
- The MA5600T uses the solution of binding GEM ports to priorities. The priority of traffic streams for managing the Layer 2 switch must be 0. Otherwise, the MA5600T drops packets.
- Check configurations of the Layer 2 switch. It is found that telnet for the port is not blocked.
- Capture packets on the Layer 2 switch. It is found that the priority of the telnet response packet of the Layer 2 switch is 6. The priority of the packets of the Layer 2 switch cannot be changed.
- Check the configurations of the MA5620. It is found that the transparent LAN service (TLS) streams are configured, but the attributes of such streams cannot be changed.
- Configure a traffic stream on the MA5620 using the management IP address of the Layer 2 switch and configure the stream with the following attributes using the traffic profile: the priority of the stream is 0, the local attributes are used. Then, the Layer 2 switch can be telneted remotely. Then, it is found that the fault is rectified.
If the GPON service of
the MA5600T uses the solution of binding GEM ports to priorities, the priority
of the traffic stream transmitted to the GPON device needs to be checked.
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