From: Anton Yurchenko (phila@cascopoint.com)
Date: Sun Aug 21 2005 - 14:28:35 GMT-3
Gustavo Novais wrote:
>Hello,
>
>The thing here is that inside an ISIS area L1 routes are preferred over
>L2 routes,
>
that answers my question, if nothing is specified routes are
redistributed into ISIS as L2 routes, and if you specify "level-1-2"
redistribute both as L1 and L2. But L1 are prefer so only they show up.
> so what you may see by inspecting sh isis database detail is
>that you have both routes either as L2 and as L1, if the circuit type
>between those two routers is L-1-2.
>
yes I was redistributing into an L-1-2 .
> The thing is that you only see L1
>routes on the routing table because they are preferred. (Were you
>expecting to see L1 and L2 on same routes?)
>
>
>
It was just not clear the behaviour of level-1-2 option in this case,
and documentation only talks about the case when you redistribute from
ISIS and use these options.
Thanks to all for answers
>HTH
>
>Gustavo
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Hector Fernandez
>Sent: domingo, 21 de Agosto de 2005 11:43
>To: Anton Yurchenko; ccielab@groupstudy.com
>Subject: Re: effect of "redistribute ospf level-1-2" in ISIS
>
>Hi Anton,
>
>AFAIK, Level-1 or Level-2 have to do with the kind of adjacencies
>routers create. If both are level1-2, they'll create both L2 and L1
>adjacencies.
>By having a L1 beside a route means you've learned the route via an L1
>neighbor. Same applies to L2.
>If you want to see the type of route, you can look at the metric. If
>it's greater that 64 (extended metric), it's external (or someone forced
>extended metric).
> If you look at the isis database details you'll see the tag
>"IP-external"
>on the redistributed (external) routes (sh isis data detail).
>
>Regards
>
>Hector
>----- Original Message -----
>From: "Anton Yurchenko" <phila@cascopoint.com>
>To: <ccielab@groupstudy.com>
>Sent: Sunday, August 21, 2005 4:25 AM
>Subject: effect of "redistribute ospf level-1-2" in ISIS
>
>
>
>
>>Hi All,
>>
>>I`m redistributing OSPF into ISIS, and external routes show up as L2.
>>With "level-1-2" option they show up in ISIS domain as L1. So how is
>>"level-1-2" different from just "level-1" ?
>>
>>Thanks,
>>
>>
>>
>>
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