11-26-2013 07:26 AM - edited 03-07-2019 04:47 PM
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
11-26-2013 04:38 PM
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.
11-26-2013 06:01 PM
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
11-27-2013 02:05 AM
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.
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