From: Michael Brooks (michaeljbrooks@gmail.com)
Date: Wed Jan 11 2006 - 18:42:08 GMT-3
Whether a vlan interface is up or down is dependent on whether spanning-tree
is forwarding on that vlan. If spanning-tree is not forwarding on the vlan
it will be down/down.
Mike
On 1/11/06, James Ventre <messageboard@ventrefamily.com> wrote:
>
> On a 6500 - you can disable that feature (for everything or specific
> vlans). It's called the MSFC Auto-State. It's so that if you lose a
> link to a network (or all the ports in a vlan goes down) you no longer
> advertise that network (don't advertise for things you can't deliver on)
>
> James
>
>
>
>
> CCIEin2006 wrote:
> > Hey guys,
> >
> > I made some observations and I was wondering if someone could
> verify/explain
> > them.
> >
> > 1. When creating a SVI on a Cat3550 switch (i.e. Interface Vlan50) the
> > interface will remain in a down/down state until the actual vlan (in
> this
> > case vlan 50) is configured. Is this correct?
> >
> > 2. When creating a SVI on a Cat6500 switch, creating the actual vlan is
> not
> > enough to bring the interface to an up/up state. You actually need a
> device
> > connected to that vlan to be in an up/up state. If there are no devices
> > connected to that vlan the virtual interface will go to down state.
> > Is that correct? Why is that?
> >
> > Thanks!
> >
> > _______________________________________________________________________
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>
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