From: Wang Dehong-DWANG1 (Dehong.Wang@motorola.com)
Date: Tue Aug 10 2004 - 16:13:42 GMT-3
Brian
I have another question related to your post.. does this means that full-mesh is required for frame-replay configuration using ISIS? I think it is no, but not so sure. If hub-spoke configuration works with ISIS, should hub-router be selected as DIS always like ip os net broadcast case?
thanks.
- Dehong
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Brian McGahan
Sent: Tuesday, August 10, 2004 1:36 PM
To: Edwards, Andrew M; ccielab@groupstudy.com
Subject: RE: ISIS 12.2T command
Andy,
It changes the hello type sent out the interface. IS-IS
supports three packet formats, L1 LAN, L2 LAN, and point-to-point. L1
LAN is for level-1 adjacencies on multipoint medias, while L2 LAN is for
level-2 adjacencies on multipoint medias. Both support DIS elections.
Point-to-point is for both L1 and L2 adjacency on point-to-point
connections, and does not support a DIS election.
It's like the difference between ip ospf network broadcast and
ip ospf network point-to-point. Keep in mind that IS-IS adjacency
cannot form unless there is a match in the network type. You can see
what network type an interface is running by issuing the "debug isis
adj" command and watch what packets are sent out the interface.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Edwards, Andrew M
> Sent: Tuesday, August 10, 2004 1:01 PM
> To: ccielab@groupstudy.com
> Subject: Re: ISIS 12.2T command
>
> Group,
>
> I'm trying to figure out when to use the following interface command:
>
> Isis network point-to-point
>
> I know what the docCD says, but why would I want to convert broadcast
to
> unicast flooding over broadcast media? Would this be like neighbor
> statements in RIP?
>
> andy
>
>
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