Symptom/Cause | Solution |
|---|---|
Unable to create/delete VLAN with a bridge Bridge is not VLAN aware Incorrect command syntax Maximum number of vlans created already VLAN created or deleted already | Use these commands: show vlan brief Confirm if the VLAN is created. show running-config Verify the type of bridge configured and the number of VLANS already configured on the bridge. |
VLAN tagged/untagged packets are not egressed/ingressed properly Incorrect configuration on interface Interface may be in down state Interface may be in spanning-tree disabled state | Use these commands: show vlan brief Confirm if the VLAN is created. show running-config Verify the type of bridge configured and the number of VLANS already configured on the bridge. show interface IF_NAME View the input/output/dropped packet counters. clear counters IF_NAME Use this command to clear counter statistics for the interface. |
VLAN interface is not operational Interface is admin shutdown No associated physical interfaces All associated physical interfaces are down | Use these commands: show running-config Verify if the interface is not shut down by the user. show vlan brief Check if the VLAN is bound to physical interface show interface Verify if the member interface is UP and RUNNING |