HP J4899B User Manual - Page 51

Troubleshooting, show lacp, show spanning-tree, show interfaces, Problem, Solution, Tree, LACP, or - vlan

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Troubleshooting Diagnosing with the LEDs Tip Problem Solution ➐ The port may be Use the switch console to see if the port is part of a dynamic trunk (through the LACP improperly feature) or to see if Spanning Tree is enabled on the switch, and to see if the port may configured, or have been put into a "blocking" state by those features. The show lacp command displays the port may be in the port status for the LACP feature; the show spanning-tree command displays the port a "blocking" status for Spanning Tree. state by the normal operation of the Spanning Tree, LACP, or IGMP features. Also check the Port Status screen using the show interfaces command to see if the port has been configured as "disabled". Other switch features that may affect the port operation include VLANs and IGMP. Use the switch console to see how the port is configured for these features. For software troubleshooting tips, see the chapter "Troubleshooting" in the Management and Configuration Guide, which is on the Documentation CD-ROM that came with your switch. Make sure also, that the device at the other end of the connection is indicating a good link to the switch. If it is not, the problem may be with the cabling between the devices or the connectors on the cable. Troubleshooting 4-7

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4-7
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
➐
The port may be
improperly
configured, or
the port may be in
a “blocking”
state by the
normal operation
of the Spanning
Tree, LACP, or
IGMP features.
Use the switch console to see if the port is part of a dynamic trunk (through the LACP
feature) or to see if Spanning Tree is enabled on the switch, and to see if the port may
have been put into a “blocking” state by those features. The
show lacp
command displays
the port status for the LACP feature; the
show spanning-tree
command displays the port
status for Spanning Tree.
Also check the Port Status screen using the
show interfaces
command to see if the port
has been configured as “disabled”.
Other switch features that may affect the port operation include VLANs and IGMP. Use
the switch console to see how the port is configured for these features.
For software troubleshooting tips, see the chapter “Troubleshooting” in the
Management
and Configuration Guide
, which is on the Documentation CD-ROM that came with your
switch.
Make sure also, that the device at the other end of the connection is indicating a good
link to the switch. If it is not, the problem may be with the cabling between the devices or
the connectors on the cable.
Tip
Problem
Solution