09-21-2007 02:45 AM - edited 03-05-2019 06:37 PM
Hello All,
Why is that when i remove a Vlan, the interface associated it is not return to the list of default Vlan interfaces?.
Hence whenever a new Vlan is created the formerly removed interface is automatically assigned to the newly created Vlan.
How can i return the removed Vlan's interface number to the list of the default interfaces where a new choice ould be made?
Thanking all in advance
09-21-2007 04:30 AM
can you please provide the relevent show output and the cofiguration.
09-21-2007 07:43 AM
It seems to be they way IOS works. Here is what I get, the interface was assigned back to vlan 30 and not to vlan 34
AAASWITCH(config)#vlan 30
AAASWITCH(config-vlan)#exit
AAASWITCH(config)#do show vlan
VLAN Name Status Ports
1 default active
Fa0/29, Fa0/30, Fa0/31, Fa0/32
Fa0/33, Fa0/34, Fa0/36, Fa0/37
2 VLAN0002 active
30 VLAN0030 active Fa0/35
34 VLAN0034 active
35 VLAN35 active
37 VLAN0037 active
AAASWITCH(config)#no vlan 30
AAASWITCH(config)#do show vlan
VLAN Name Status Ports
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23, Fa0/24
Fa0/25, Fa0/26, Fa0/27, Fa0/28
Fa0/29, Fa0/30, Fa0/31, Fa0/32
Fa0/33, Fa0/34, Fa0/36, Fa0/37
2 VLAN0002 active
34 VLAN0034 active
35 VLAN35 active
37 VLAN0037 active
AAASWITCH(config)#vlan 34
AAASWITCH(config-vlan)#exit
AAASWITCH(config)#do show vlan
VLAN Name Status Ports
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23, Fa0/24
Fa0/25, Fa0/26, Fa0/27, Fa0/28
Fa0/29, Fa0/30, Fa0/31, Fa0/32
Fa0/33, Fa0/34, Fa0/36, Fa0/37
2 VLAN0002 active
34 VLAN0034 active
35 VLAN35 active
37 VLAN0037 active
AAASWITCH(config)#vlan 30
AAASWITCH(config-vlan)#exit
AAASWITCH(config)#do show vlan
VLAN Name Status Ports
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23, Fa0/24
Fa0/25, Fa0/26, Fa0/27, Fa0/28
Fa0/29, Fa0/30, Fa0/31, Fa0/32
Fa0/33, Fa0/34, Fa0/36, Fa0/37
30 VLAN0030 active Fa0/35
Ideally it should go back to default vlan.
Regards,
~JG
09-21-2007 07:59 AM
As long as you have "switchport access vlan x" configured for the interface, the interface will be associated with vlan x, even if vlan x is not created.When you remove this command the port becomes part of vlan1.Hope this clarifies.
09-21-2007 08:50 AM
Maybe it depends on the switch's IOS version because I always thought that the switchport will default to vlan 1 if the vlan to which it belonged was ever removed....?
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