From: Packet Man (ccie2b@hotmail.com)
Date: Tue Feb 17 2004 - 13:20:01 GMT-3
Hi Bob,
I liked your response, but I don't understand why your 3rd solution would
work. Also, if there were a level-1 adj with one spoke and a level-2 adj
with the other spoke, can I infer that if there were a level-2 adj with both
spokes that would also work or is there something special about having 1
level-1 and 1 level-2 adj with each spoke?
Also, suppose there were both level 1 and 2 adj with each spoke. why would
that work or not work?
Thanks
>From: "Bob Sinclair" <bsinclair@netmasterclass.net>
>Reply-To: "Bob Sinclair" <bsinclair@netmasterclass.net>
>To: "edgar feliz" <ejfeliz65@yahoo.com>, <ccielab@groupstudy.com>
>Subject: Re: ISIS on F/R NBMA Date: Tue, 17 Feb 2004 10:32:49 -0500
>
>Edgar,
>
>ISIS routers on a broadcast network must form a full-mesh of adjacencies.
>This is not possible with a hub-and-spoke frame-relay topology, because the
>multicasts used to form the adjacencies have a ttl of 1 (do not get
>forwarded by the hub).
>
>This is unlike OSPF, where the spokes only need to be adjacent with the DR,
>which can be located at the hub.
>
>One solution, of course, would be a full-mesh of PVCs. Another would be a
>full mesh of tunnels. Another might be a hub with just 2 spokes, where the
>hub does a level-1 adjacency with one spoke and a level-2 adjacency with
>the
>other.
>
>HTH,
>
>Bob Sinclair
>CCIE #10427, CISSP, MCSE
>www.netmasterclass.net
>
>----- Original Message -----
>From: "edgar feliz" <ejfeliz65@yahoo.com>
>To: <ccielab@groupstudy.com>
>Sent: Tuesday, February 17, 2004 10:10 AM
>Subject: ISIS on F/R NBMA
>
>
> > Has anyone gotten ISIS to work over Frame-Relay configured on the main
>interface with map statements. here is the hub router config. I have three
>spokes my looback are seen by the hub router but the spokes don't see the
>loopbacks of the other spokes only the hubs.
> >
> > I should see 192.168.1.1 and 192.168.2.2 on the sh ip route of router r4
>but as you'll see below it is not working.
> >
> > interface Serial0/0
> > ip address 150.50.100.3 255.255.255.248
> > ip router isis
> > ip pim nbma-mode
> > ip pim sparse-mode
> > encapsulation frame-relay
> > ip igmp join-group 224.0.1.40
> > no fair-queue
> > clockrate 256000
> > isis priority 127
> > frame-relay map clns 402 broadcast
> > frame-relay map clns 406 broadcast
> > frame-relay map clns 403 broadcast
> > frame-relay map ip 150.50.100.1 402 broadcast
> > frame-relay map ip 150.50.100.2 403 broadcast
> > frame-relay map ip 150.50.100.4 406 broadcast
> > frame-relay lmi-type cisco
> >
> >
> > Sh ip route os one spoke..................................
> > 117.0.0.0/24 is subnetted, 1 subnets
> > S 117.17.17.0 is directly connected, Null0
> > 116.0.0.0/24 is subnetted, 1 subnets
> > S 116.16.16.0 is directly connected, Null0
> > 172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
> > i L1 172.16.136.0/26 [115/20] via 150.50.100.3, Serial0/0
> > i L1 172.16.35.0/30 [115/20] via 150.50.100.3, Serial0/0
> > 192.168.4.0/32 is subnetted, 1 subnets
> > C 192.168.4.4 is directly connected, Loopback0
> > 192.168.5.0/32 is subnetted, 1 subnets
> > i L1 192.168.5.5 [115/30] via 150.50.100.3, Serial0/0
> > 13.0.0.0/24 is subnetted, 1 subnets
> > B 13.13.13.0 [200/0] via 192.168.3.3, 00:10:12
> > 14.0.0.0/24 is subnetted, 1 subnets
> > B 14.14.14.0 [200/0] via 192.168.3.3, 00:10:13
> > 150.50.0.0/29 is subnetted, 1 subnets
> > C 150.50.100.0 is directly connected, Serial0/0
> > 192.168.3.0/32 is subnetted, 1 subnets
> > i L1 192.168.3.3 [115/20] via 150.50.100.3, Serial0/0
> > r43620#
> >
> >
> > Thanks Edgar
> >
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