[c-nsp] Forcing VLAN interface to UP state

[Mike Johnson]

Is vlan 400 created on the switch?

harbor235 ;}

On Wed, Oct 1, 2008 at 10:05 AM, David Granzer <dgranzer at gmail.com> wrote:

> Hello,
>
> I'm not surre how it works on UC520, but with 3750 (for example) when
> you don't have a spanning tree instance for that vlan then the
> interface state is up/down.
>
> 3750-1#sh spanning-tree vlan 24
> Spanning tree instance(s) for vlan 24 does not exist.
>
> 3750-1#sh int vlan 24 | i Vlan
> Vlan24 is up, line protocol is down
>
> When enabling spanning tree
>
> 3750-1#sh spanning-tree vlan 24
>
> VLAN0024
>  Spanning tree enabled protocol ieee
>
> 3750-1#sh int vlan 24 | i Vlan|Internet address
> Vlan24 is up, line protocol is up
>  Internet address is 1.2.3.4/24
>
> 3750-1#ping 1.2.3.4
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 1.2.3.4, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5)
>
>
> Regards,
> David
>
>
>
> On 10/1/08, Bagosi Rómeó <Bagosi.Romeo at iqsys.hu> wrote:
> > Hi,
> >
> >  Is there a way to force a VLAN interface (ex.: interface vlan 400) to
> UP/UP state on a Cisco UC520 (router, switch...), WITHOUT connecting a
> device to a port which is in the mentioned VLAN?
> >
> >  The current configuration is:
> >  int vlan 400
> >   ip address 10.1.1.1 255.255.255.0
> >
> >  show int vlan 400
> >   Vlan300 is up, line protocol is down
> >  ...
> >
> >  Thanks,
> >  Romeo Bagosi
> >
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