From: Rich Collins (nilsi2002@gmail.com)
Date: Wed Jan 14 2009 - 18:27:43 ARST
I'm not sure if this is the most elegant method but it seems to work.
Take your step 2)
On your Router6
router isis
net xx.xxxx
summary-address 0.0.0.0 0.0.0.0 level-1
redistribute static ip metric 50 level-1
-Rich
On Wed, Jan 14, 2009 at 9:01 AM, Dr. Seuss <greeneggsandham4@hotmail.com> wrote:
> I've been playing around with default routes in ISIS the last couple of days,
> and I've searched through the archives for more info. My topology is simple:
> Router6 is a L1/L2 router with an ethernet connection to Router8, and a
> frame-relay connection to Router2. R6 and R2 speak BGP with each other, and
> R6 speaks ISIS with R8. I'm trying to get R6 to feed a default route to R8
> (redistributing BGP into ISIS is a bad idea), and here's what I've discovered
> so far:
>
> 1) R6 does *not* automatically set the ATT bit in its LSP updates to R8,
> despite R6 being L1/L2 and R8 being L1.
>
> 2) Configuring a static route to null0 on the L1/L2 router and redistributing
> static does not work. L1 routers (R8) do not receive a default route.
>
> 3) Configuring a static route to null0 on the L1/L2 router and using
> "default-information originate" does not work. L1 routers do not receive a
> default route.
>
> 4) Configuring ISIS between R6 and R2 *does* impel R6 to send a default route
> to R8. This is the *only* configuration so far which gets a default route
> into R8's routing table.
>
> For the record, R8 is running 12.1(3r)T2, and R6 is running Version 12.2(8r).
> My question is this: what is the ISIS equivalent of an ASBR? It doesn't seem
> to want to feed a default route to anyone else unless it's attached to another
> *ISIS* area!
>
> Thanks,
> BJW
>
> _________________________________________________________________
> Windows Live : Keep your life in sync.
> http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t1_allup_explore_012009
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Sun Mar 01 2009 - 09:43:38 ARST