Command
Show
Use
This is the legacy way to view VLANs configured on a switch. While this mode is being depreciated, you will still encounter it on older switches or routers with switch modules. On newer IOS releases, use the show vlan command.
Syntax
Switch(vlan)#show
OR
Switch(vlan)#show <changes or current or proposed>
Options
| <changes> | Only shows changes to the VLAN database |
| <current> | Shows how the VLAN database is configured as of the last save |
| <proposed> | Shows the VLAN database, including the current changes |
Example
In this example we will explore the differences in the various show commands. First we will add and remove a vlan on the database. Then we will try out the different showcommands before we save.
2950-XL#vlan database 2950-XL(vlan)#no vlan 55 Deleting VLAN 55… 2950-XL(vlan)#vlan 70 VLAN 70 added: Name: VLAN0070
Looking at show changes we see our two changes to the VLAN database.
2950-XL(vlan)#show changes DELETED: VLAN ISL Id: 55 Name: MANAGEMENT Media Type: Ethernet VLAN 802.10 Id: 100055 State: Operational MTU: 1500 ADDED: VLAN ISL Id: 70 Name: VLAN0070 Media Type: Ethernet VLAN 802.10 Id: 100070 State: Operational MTU: 1500
Looking at show current, we see that VLAN 55 still exists and VLAN 70 doesn’t, This is because we haven’t saved yet.
2950-XL(vlan)#show current VLAN ISL Id: 1 Name: default Media Type: Ethernet VLAN 802.10 Id: 100001 State: Operational MTU: 1500 Translational Bridged VLAN: 1002 Translational Bridged VLAN: 1003 VLAN ISL Id: 55 Name: MANAGEMENT Media Type: Ethernet VLAN 802.10 Id: 100055 State: Operational MTU: 1500 VLAN ISL Id: 1002 Name: fddi-default Media Type: FDDI VLAN 802.10 Id: 101002 State: Operational MTU: 1500 Bridge Type: SRB Translational Bridged VLAN: 1 Translational Bridged VLAN: 1003 VLAN ISL Id: 1003 Name: token-ring-default Media Type: Token Ring VLAN 802.10 Id: 101003 State: Operational MTU: 1500 Bridge Type: SRB Ring Number: 0 Bridge Number: 1 Parent VLAN: 1005 Maximum ARE Hop Count: 7 Maximum STE Hop Count: 7 Backup CRF Mode: Disabled Translational Bridged VLAN: 1 Translational Bridged VLAN: 1002 VLAN ISL Id: 1004 Name: fddinet-default Media Type: FDDI Net VLAN 802.10 Id: 101004 State: Operational MTU: 1500 Bridge Type: SRB Bridge Number: 1 STP Type: IBM VLAN ISL Id: 1005 Name: trnet-default Media Type: Token Ring Net VLAN 802.10 Id: 101005 State: Operational MTU: 1500 Bridge Type: SRB Bridge Number: 1 STP Type: IBM
Finally, looking at show or show proposed, we see how the final modifiations would look. Notice that VLAN 70 exists and VLAN 55 is gone.
2950-XL(vlan)#show changes DELETED: VLAN ISL Id: 55 Name: MANAGEMENT Media Type: Ethernet VLAN 802.10 Id: 100055 State: Operational MTU: 1500 ADDED: VLAN ISL Id: 70 Name: VLAN0070 Media Type: Ethernet VLAN 802.10 Id: 100070 State: Operational MTU: 1500