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3. Troubleshooting Functional Failures in Operation
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that the identical MAC address is set in the configuration and is disabled.
# show vlan mac-vlan
:
VLAN ID:500 MAC Counts:4
0012.e200.aa01 (static)
0012.e200.aa02 (static)
0012.e200.aa03 (static) 0012.e200.aa04 (dot1x)
VLAN ID:600 MAC Counts:1
* 0012.e200.aa01 (dot1x)
(2) Checking port status
• Execute the show vlan command with "detail" parameter specified, and confirm that the port is Up. If the
port is Down, see "3.4 Network Interface Communication Failure."
• Confirm that the port is in the Forwarding status. If the port is in the Blocking status, the reason is shown
in parentheses. Check the operation status of the function causing the problem.
[Cause]
VLAN: VLAN is specified to suspended.
CH: Forwarding is suspended by link aggregation.
STP: Forwarding is suspended by spanning tree.
GSRP: Forwarding is suspended by GSRP.
dot1x: Forwarding is suspended by IEEE802.1X.
CNF: Forwarding is suspended due to inability of configuration setting.
AXRP: Forwarding is suspended by Ring Protocol.
# show vlan detail
:
VLAN ID:100 Type:Protocol based Status:Up
:
Port Information
0/1 Up Forwarding Untagged
0/2 Up Forwarding Tagged
(3) Checking MAC address table
(a) Checking MAC address learning status
• Execute the show mac-address-table command to retrieve the information of the failed destination
MAC address.
# show mac-address-table
MAC address VLAN Type Port-list
0012.e22c.650c
10 Dynamic 0/1
0012.e22c.650b 1 Dynamic 0/2
• Take the action below according to the Type displayed.
[When Type displayed is Dynamic]
MAC address learning information may not be updated. Execute the clear mac-address-table
command to clear old information. The old information can be also cleared by sending frames from the
destination system.
[When Type displayed is Static]
Check the forwarding destination port configured using configuration command mac-address-table
static.
[When Type displayed is Snoop]
See "3.5.4 Multicast Relay by IGMP snooping Is Disabled" and "3.5.5 Multicast Relay by MLD snooping Is
Disabled."