[c-nsp] 6509 extended vlan issue

[Bøvre Jon Harald]

No, its not a bug

6500/7600 uses a conecpt of internal vlans for layer-3 interfaces, vrf, vfi
By default these vlans are allocated from 1006 upwards

issue the command 
show vlan internal usage
to verify if any are used.

It is possible to change this to allocate vlan 4096 and downwards using:
vlan internal allocation policy descending  (requires reboot)

Jon Harald Bøvre


________________________________________
Fra: cisco-nsp-bounces at puck.nether.net [cisco-nsp-bounces at puck.nether.net] på vegne av Chris Lane [clane1875 at gmail.com]
Sendt: 17. april 2010 19:10
Kopi: cisco-nsp at puck.nether.net
Emne: Re: [c-nsp] 6509 extended vlan issue

forgot to add this when replying:
vtp mode transparent
spanning-tree mode pvst
spanning-tree extend system-id

already had this in device. still can't get 1007-1025 to work but 1026-2094
no problem!! Is that a bug?

On Sat, Apr 17, 2010 at 12:53 PM, Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Sat, Apr 17, 2010 at 12:32:52PM -0400, Chris Lane wrote:
> > we currently have at least 40 Cisco 3750s as our distribution platform. I
> am
> > starting to move away from the 3750 and onto the 6509. Building my first
> > config, which is transitioning the 3750 to the 6500, i cannot use vlan
> > 1007-1300 (which i currently do use in the 3750) due to it "
> > Can't modify media for extended VLAN 1007-1300."
>
> You need to set "spanning-tree extend system-id" to be able to use
> the "extended" VLAN range.
>
> > So i google it, find that i need to add globally, but when trying i get
> no
> > values with a ?
> >
> > Router(vlan)#?
> > VLAN database editing buffer manipulation commands:
>
> ... and while at it: forget about VLAN database.  Set "vtp mode off"
> (on SXI) or "vtp mode transparent" and configure all the VLANs from
> normal config mode.
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>                                                           //
> www.muc.de/~gert/
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
>



--
//CL
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