From: Hossam (sam6626@yahoo.com)
Date: Fri Jan 16 2004 - 11:13:51 GMT-3
Guys,
Theoriticaly, i know that the ISIS has only two supported network types "Point - Point" and Broadcast Multiple Access. I know we need to go for the point to point option with all FR interfaces.
But i tried configuring ISIS over NMBA (Point to multipoint FR interface) over a link between two routers only. And it worked fine. CNLS neihbour were up. Routing tables looked ok.
So i thought i have to take one step further and try ISIS over NMBA with a HUB and two spokes. Strangly, the CLNS neighbors were up between the three routers. The HUB routing table was ok too. But the spokes did't have the full routing table.
I think this is realated to that ISIS unlike OSPF needs to build up links between all routers over the Multiple access network and NOT only the Designated router. I think if i went to a FULL Mesh instead of HUB and spoke it will work? is't it??
Is my understanding ok?? do i miss anything?
Is there any turn arrounds to get the ISIS over a HUB and spoke layout over NMBA to work??
Thanks
SAM
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