"VLAN(s) are not available in Port Manager" in 7613

[leungcat]

Dear Sir,

I got a problem when I try to create a VLAN in a 7613 router. The screen capature like the following:

router(conf)#vlan 1045

router(conf-vlan)#exit

VLAN(s) are not available in Port Manager

The VLAN is failed to create. The VLAN range which is failed to create is from 1001 - 1060. Is there any expert that meet the similar problem? and what should I do to solve the problem? so that I can create VLAN 1045?

Thank you very much!

[s-doyle]

Useable VLAN that can be craeted in a switch falls within the range -

Vlan 1 to Vlan 1001

So u cant create a vlan 1045 which is reserved for devices like Token ring

[Sergio Maciujec]

Extended Range VLAN - FAIL

I was reading an old post on CCIE talk about extended range vlans and I learned something new.  The post is here:

CCIE Talk

If  a Catalyst switch has any routed ports then it uses an extended vlan as  an "internal vlan" for that port. Why? I don't know but it's something  to take caution with if you run into any issues.

Check it out:

SW1#sho vlan internal usage

VLAN Usage

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

Now let's create a routed port:

SW1(config)#int f0/24

SW1(config-if)#no sw

Now we have VLAN 1006 taken up:

SW1#sho vlan internal usage

VLAN Usage

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

1006 FastEthernet0/24

SW1#

What happens if we try to create or modify VLAN 1006? Let's see:

SW1(config)#vlan 1006

SW1(config-vlan)#exit

% Failed to create VLANs 1006

VLAN(s) not available in Port Manager.

%Failed to commit extended VLAN(s) changes.

00:06:13: %PM-4-EXT_VLAN_INUSE: VLAN 1006 currently in use by FastEthernet0/24

00:06:13: %SW_VLAN-4-VLAN_CREATE_FAIL: Failed to create VLANs 1006: VLAN(s) not available in Port Manager

SW1(config)#

FAIL. What if we were supposed to use VLAN 1006?  Shut it down, enable VLAN 1006, then re-enable the port.

SW1(config)#int f0/24

SW1(config-if)#shut

SW1(config)#do show vlan internal usa

VLAN Usage

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

SW1(config)#vlan 1006

SW1(config-vlan)#exit

SW1(config)#int f0/24

SW1(config-if)#no shut

SW1(config-if)#exit

SW1(config)#do show vlan internal usa

VLAN Usage

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

1007 FastEthernet0/24

The switch uses the next number.

http://ccietobe.blogspot.com/2008/12/extended-range-vlan-fail.html

[Sergio Maciujec]

This thread explains it better:

http://www.gossamer-threads.com/lists/cisco/nsp/74209