Monitoring and Analyzing Switch Operation

Status and Counters Data

VLAN Information

The switch uses the CLI to display the following VLAN status:

Show Command

Output

 

 

show vlan

Lists:

 

• Maximum number of VLANs to support

 

Existing VLANs

 

• Status (static or dynamic)

 

Primary VLAN

show vlan <vlan-id>

For the specified VLAN, lists:

 

• Name, VID, and status (static/dynamic)

 

Per-Port mode (tagged, untagged, forbid, no/auto)

 

• “Unknown VLAN” setting (Learn, Block, Disable)

 

Port status (up/down)

 

 

 

For example, suppose that your switch has the following VLANs:

Ports

VLAN

VLANID

 

 

 

1-12

DEFAULT_VLAN

1

 

 

 

13-14

VLAN-33

33

 

 

 

15-20

VLAN-44

44

 

 

 

The next three figures show how you could list data on the above VLANs.

Figure B-14. Example of VLAN Listing for the Entire Switch

B-20