From: ying chang (ying_c@xxxxxxxxxxx)
Date: Sat Jun 01 2002 - 14:04:59 GMT-3
There's no ports for us to block in this case - it's not a fully meshed
frame relay network, and spokes have to use the hub as a transit area. That
leaves us to choose one of the spokes as the root bridge. However, when the
data going from the spoke to the hub, the hub will not send the data back
out to the port it receives the data from when it's a multipoint interface,
so I don't think this 3-node hub and spokes question is unsolvable.
If we have an additional node hanging off the hub router with point-to-point
interface, this new node will have no problems to communicate with either
multipoint spokes. And yes, if we add even more nodes into the picture, than
we have to select root bridge and use the cost to control the topology to
make the bridge network work. But for this case, I don't think they matter.
Right or wrong, have to support Serguei! :)
Chang
>From: Hansang Bae <hbae@nyc.rr.com>
>Reply-To: Hansang Bae <hbae@nyc.rr.com>
>To: ccielab@groupstudy.com
>Subject: RE: FrameRelay multipoint interface and bridging
>Date: Sat, 01 Jun 2002 11:41:23 -0400
>
>At 11:12 AM 6/1/2002 -0400, Bezverkhi, Serguei wrote:
> >Thanks man for support!! :-)
> >
> >I did a research on Cisco web site and funny thing they say it is
> >possible to do bridging with multipoint interfaces, but all examples are
> >with point-to-point interfaces.
> >Another thing how would you assign a bridge port cost for Spanning tree
> >on multipoint interfaces???
>
>
>You can do it. The whole point of this exercise is that you need to
>properly select the root bridge. *AND* increase the costs on other
>interfaces so that it will go into blocking mode.
>
>hsb
This archive was generated by hypermail 2.1.4 : Tue Jul 02 2002 - 08:12:19 GMT-3