How to find which switch is configured VLAN 1

[msworld]

We have a consultant to help us to setup VLAN. Now, I am talking to Cisco Tech support and he asked me how we setup VLAN and where is. We have over 20 Cisco switches, how can I find which switch is configured VLAN?

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on

http://www.HowToNetworking.com

 

[globalchicken]

Some good commands are
sh vlan. This will give you information about what vlans are configured on your switch and what ports are members of those vlans.

sh run This will let you look through the running configuration and find out how every port is configured with vlan information. If the port does not have vlan config then it will be in the default vlan of 1.

Now all switches out of the box without a config, have vlan 1 configured on them and all ports are members of vlan 1. This is good to note if you have not done any vlan configuration as of yet.

 

[msworld]

Thank you for quick reply. If I do sh vlan, most our switches display like this:

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4

So, Can I assume for the VLAN 1, you just enable port on each switch you want to use. For example, our consultant configure vlan 100, 200 in PIX 515. I don't see vlan 1. That is why I ask the question.

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on

http://www.HowToNetworking.com

 

[globalchicken]

Here is a link for the 3550 config guide. Not sure what switch series you have but this could help!

http://www.cisco.com/en/US/products...configuration_guide_book09186a00802c4819.html

All ports look to be in their default vlan of 1.

 

[msworld]

Thank you for the link.

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on

http://www.HowToNetworking.com

 

[burtsbees]

VLAN1 is the default VLAN---all ports belong to VLAN1 unless otherwise configured. The VLAN configurations reside in the switches---the PIX or router needs the VLAN information to route between the VLANs, unless you have a layer 3 switch, like a 3550, which is simply a switch with a device built in for routing, called a route processor...I think...

Burt

 

[Prizmm]

FYI: an easy (and graphical) way to check out your switches and more specifically VLANs is to download the Cisco Network Assistant from Cisco.com

Hope this helps