Specifications
ALAXALA Ring Configuration Guide (Edition 1)
Copyright © 2008, ALAXALA Networks Corporation. All rights reserved.
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6.2 Isolating the cause of a ring failure
If a failure occurs in the Ring Protocol, a message is output to the log, indicating that a failure has occurred
and the failure operation has started. Another message is output to the log when the protocol recovers from the
failure, indicating that the recovery operation has started. In addition, you can obtain master node monitoring
information as MIB information and use a trap to check if a switching operation is performed.
<Status check by the show axrp detail command>
You can execute this command on a node to check the status of the primary and secondary ports for the ring
ID to which the node belongs. You can also execute the command on the master node to check various ring
settings.
When the ring path is switched after a failure occurs, the Fault Counts value of the master node is incremented.
This indicates that the master node detected the failure and switched the path by performing the failure operation.
When a ring fails and then recovers, the Recovery Counts value is also incremented. In addition, if the status is
changed, the date and time of the last status change is also displayed.
<Status check by the show logging command>
This command shows a variety of events including ring failures. When a ring fails and then recovers, the
master node displays an event indicating the start of the failure operation or failure recovery operation, and the
transit nodes display an event indicating that they receive flush control frames and clear their MAC address
tables.
When events other than the above occur, they are logged. So, if you run the command on all the nodes, you
can determine which device has a failure.
Occurrence of a failure
Identifying where the failure occurred (on all the nodes)
show axrp detail (check of the ring status)
show logging (check of log messages)
show port (check of the status of ports)
show interface (check of the interface status)
Caused by a hardware fault or misconfiguration?
In case of a hardware fault:
Cable replacement
Card replacement
etc...
In case of misconfiguration:
Checking the configuration or the
NW configuration
Modifying the configuration etc...
Checking recovery
show axrp detail (check of the ring status)
show logging (check of log messages)