VLAN Info

Jayme Hallstrom · ‎11-26-2013

Hello,

I am looking to transition from VLAN 1 to VLAN 11 on my Catalyst 2960s as per Cisco best practices.

When I look at 'show vlan' I get the following output:

VLAN Name Status Ports

---- -------------------------------- --------- -------------------------------

1 default active Gi1/0/13, Gi1/0/14, Gi1/0/15

Gi1/0/16, Gi1/0/17, Gi1/0/18

Gi1/0/19, Gi1/0/20, Gi1/0/21

Gi1/0/22, Gi1/0/23, Gi1/0/24

Gi1/0/25, Gi1/0/26, Gi1/0/27

Gi1/0/28, Gi1/0/29, Gi1/0/30

Gi1/0/31, Gi1/0/32, Gi1/0/33

Gi1/0/34, Gi1/0/35, Gi1/0/36

Gi1/0/37, Gi1/0/38, Gi1/0/39

Gi1/0/40, Gi1/0/41, Gi1/0/42

Gi1/0/43, Gi1/0/44, Gi1/0/47

Gi1/0/48, Gi1/0/49, Gi1/0/50

Gi1/0/51, Gi1/0/52, Gi2/0/13

Gi2/0/14, Gi2/0/15, Gi2/0/16

Gi2/0/17, Gi2/0/18, Gi2/0/19

Gi2/0/20, Gi2/0/21, Gi2/0/22

Gi2/0/23, Gi2/0/24, Gi2/0/25

Gi2/0/26, Gi2/0/27, Gi2/0/28

Gi2/0/29, Gi2/0/30, Gi2/0/31

Gi2/0/32, Gi2/0/33, Gi2/0/34

Gi2/0/35, Gi2/0/36, Gi2/0/37

Gi2/0/38, Gi2/0/39, Gi2/0/40

Gi2/0/41, Gi2/0/42, Gi2/0/43

Gi2/0/44, Gi2/0/49, Gi2/0/50

Gi2/0/51, Gi2/0/52

5 IP_Phones active Gi1/0/2, Gi1/0/13, Gi1/0/14

Gi1/0/15, Gi1/0/16, Gi1/0/17

Gi1/0/18, Gi1/0/19, Gi1/0/20

Gi1/0/21, Gi1/0/22, Gi1/0/23

Gi1/0/24, Gi1/0/25, Gi1/0/26

Gi1/0/27, Gi1/0/28, Gi1/0/29

Gi1/0/30, Gi1/0/31, Gi1/0/32

Gi1/0/33, Gi1/0/34, Gi1/0/35

Gi1/0/36, Gi1/0/37, Gi1/0/38

Gi1/0/39, Gi1/0/40, Gi1/0/41

Gi1/0/42, Gi1/0/43, Gi1/0/44

Gi2/0/2, Gi2/0/13, Gi2/0/14

Gi2/0/15, Gi2/0/16, Gi2/0/17

Gi2/0/18, Gi2/0/19, Gi2/0/20

Gi2/0/21, Gi2/0/22, Gi2/0/23

Gi2/0/24, Gi2/0/25, Gi2/0/26

Gi2/0/27, Gi2/0/28, Gi2/0/29

Gi2/0/30, Gi2/0/31, Gi2/0/32

Gi2/0/33, Gi2/0/34, Gi2/0/35

Gi2/0/36, Gi2/0/37, Gi2/0/38

Gi2/0/39, Gi2/0/40, Gi2/0/41

Gi2/0/42, Gi2/0/43, Gi2/0/44

Does this indicate that Gi1/0/13,Gi1/0/14...etc are associated to both VLANS?

According to everything I have read once I figure out the port configurations - I will move all of the ports from VLAN1 to VLAN11 and change:

Remove

interfaceVlan1

description Production

ip address 10.1.1.1 255.255.255.0

no ip redirects

no ip unreachables

no ip proxy-arp

Add

interfaceVlan11

description Production

ip address 10.1.1.1 255.255.255.0

no ip redirects

no ip unreachables

no ip proxy-arp

I just wanted to confirm this before I make the move this evening.

Thanks

rfalconer.sffcu · ‎11-26-2013

My guess is that you have vlan 5 set as the voice vlan and you have the voice vlan configured on a bunch of the interfaces. If that's the case, then the same interface will show in both VLAN lists.

You may have some issue with ARP since the IP address and mac address of the endpoints are associated to vlan1.

Reza Sharifi · ‎11-26-2013

First, vlan 1 can not be removed, but you can delete the ip address for vlan 1 and then create the same ip config to vlan 5 and than shut vlan 1.

In addition to configuring the SVI for vlan 11, you also need to create the layer-2 vlan for vlan 5 and add all the physical ports to it.

config t

vlan 11

name Production-vlan

interfaceVlan11

description Production

ip address 10.1.1.1 255.255.255.0

no ip redirects

no ip unreachables

no ip proxy-arp

no sh

exit

interface range 1/x/x-x/x/x

switchport access vlan 11

HTH

devils_advocate · ‎11-27-2013

Vlan5 is your voice vlan.

If you look at your switchport configs, you will see 'Switchport voice vlan 5'.

This is why the ports appear to be in both Vlans, one is for data and one is for voice.

What you are trying to achieve is fairly straight forward.

Create Vlan 11 and move all your access ports to this Vlan.

Remove the IP address from the Vlan1 SVI and shut it down.

Create the SVI for Vlan11 and input the IP address.