[rbridge] Final outcome of outer VLAN tagsonRBridge-RBridgepackets?

[Dinesh G Dutt]

Anoop,

I spoke to David Ward, an IS-IS expert here at Cisco (and a co-author on
the L2 ISIS draft) and he said that it's perfectly fine to use Hellos on
multiple VLANs for discovery and send LSP only on one VLAN, one of the
common ones.

Can we then conclude that by default we send Hellos on a set of one or
more configured VLANs with the set being equal to the active set of
VLANs on that link by default ?

Thanks,

Dinesh
On Tue, 2007-10-23 at 10:04 -0700, Anoop Ghanwani wrote:
> > -----Original Message-----
> > From: Dinesh G Dutt [mailto:ddutt at cisco.com] 
> > Sent: Tuesday, October 23, 2007 7:21 AM
> > To: Silvano Gai
> > Cc: Anoop Ghanwani; Radia Perlman; Developing a hybrid router/bridge.
> > Subject: Re: [rbridge] Final outcome of outer VLAN 
> > tagsonRBridge-RBridgepackets?
> > 
> > I agree that using a single VLAN solution for IS-IS DRB is weak.
> > However, I'm skeptical that another protocol that also just 
> > sends Hellos is much more scalabale or better than IS-IS 
> > sending only Hellos on all configured VLANs. 
> 
> Dinesh,
> 
> The key here is just sending hellos as opposed to maintaining
> a full IS-IS adjacency on the VLAN.  As long maintaining the
> adjancency and sending LSPs on every VLAN is not required, the
> protocol that is used for it doesn't matter.
> 
> Anoop
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