Alaxala AX2500S, Troubleshooting Manual

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3 Troubleshooting Functional Failures During Operation
24
3.4 Network interface communication failures
3.4.1 Ethernet port cannot be connected
If it is possible that the Ethernet port caused the communication failure, check the port
status as described below.
(1) Checking the port status
Use the show port operation command to check the port status. The following table
describes the actions to be taken for the port status.
Table 3-6 Checking the port status and action to take
No. Port state Cause Action
1
up
The target port is operating
normally. None
2
down
A line failure has occurred on the
target port. Based on the log entry for the target port displayed by
the
show logging
operation command, see Message
and Log Reference and take the action described in
Action .
3
inact
The port is in inactive status due
to one of the following reasons:

inactivate
operation
command

The standby link
functionality of link
aggregation

The BPDU guard
functionality of a Spanning
Tree Protocol

Failure detection in the
IEEE 802.3ah/UDLD
functionality

The port is deactivated by
the L2 loop detection
functionality.

The port is deactivated by
the storm control
functionality.

SML (Split Multi Link)
functionality

If the port is deactivated by the standby link
functionality of the link aggregation, this is a
normal operating status. Do not activate the port
by using the
activate
operation command. Use
the
show channel-group
operation command
with the
detail
parameter to check the standby
link functionality.

If the port is deactivated by the BPDU guard
functionality of a Spanning Tree Protocol, check
the settings of the partner switch, modify the
configuration so that the Switch does not receive
BPDUs, and use the
activate
operation
command to activate the target port. Use the
show spanning-tree
operation command with
the detail parameter to check the BPDU guard
functionality.

If the port is deactivated due to the unidirectional
link failure detection or L2 loop detection in the
IEEE 802.3ah/UDLD functionality, see 3.14
Communication failures in the IEEE
802.3ah/UDLD functionality
. After restoration
from the failure, use the activate operation
command to activate the target port.

If the port is deactivated by the L2 loop detection
functionality, modify the configuration in which the
loop occurs, and then use the
activate
operation command to activate the target port.
Also, if
loop-detection
auto-restore-time is specified by a
configuration command, the port will
automatically return to the active status.

If the port is deactivated by the storm control
functionality, after the LAN is restored from the
storm, use the
activate
operation command to
activate the target port.

If the port is deactivated by the SML functionality,