From: David Hurtado (dei2viccie@hotmail.com)
Date: Fri Apr 02 2004 - 16:29:12 GMT-3
Hello Brian,
This is in lab 14, task 5.22
>From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
>Reply-To: "Brian McGahan" <bmcgahan@internetworkexpert.com>
>To: "David Hurtado" <dei2viccie@hotmail.com>, <ccielab@groupstudy.com>
>Subject: RE: Strange route leaking situation
>Date: Fri, 2 Apr 2004 14:04:52 -0500
>
>David,
>
> Which lab is this in?
>
>
>
>Brian McGahan, CCIE #8593
>bmcgahan@internetworkexpert.com
>
>Internetwork Expert, Inc.
>http://www.InternetworkExpert.com
>Toll Free: 877-224-8987 x 705
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>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>Of
> > David Hurtado
> > Sent: Friday, April 02, 2004 12:54 PM
> > To: ccielab@groupstudy.com
> > Subject: Strange route leaking situation
> >
> > Helo everybody,
> >
> > I thougth that i have understood IS-IS route leaking and when it's
>needed,
> > but a have found a suprising situation that i cannot explain:
> >
> >
> > (BB1)ATM0/0.201-------------------------- Dialer6 (R6)
> > Ethernet2/0--------------------Level-2 routers
> > Level 1 router Level 1/2 router
> >
> >
> >
> > R6 connects to a Level-1 router (BB1) thru Dialer 6 and to a group of
> > Level-2 routers thru the Ethernet 2/0. R6 receives a Level-2 default
>route
> > from the group of Level-2 routers:
> >
> >
> > interface Ethernet2/0
> > ip router isis TODOS
> > isis circuit-type level-2-only
> >
> >
> > interface Dialer6
> > ip address 54.1.8.6 255.255.255.0
> > ip router isis TODOS
> > isis circuit-type level-1
> >
> >
> > router isis TODOS
> > net 49.2490.0001.0001.0006.00
> > net 49.0001.0001.0001.0006.00
> >
> >
> >
> > R6#sh ip route
> > <snip>
> > i*L2 0.0.0.0/0 [115/20] via 204.12.1.3, Ethernet2/0
> >
> >
> >
> > BB1 connects to R6 thru a Level-1 association and receives the default
> > route
> > as Level-1!!!!!!!:
> >
> >
> > interface ATM2/0
> > no ip address
> > no atm ilmi-keepalive
> > pvc 0/5 qsaal
> > !
> > pvc 0/16 ilmi
> > !
> > interface ATM2/0.301 point-to-point
> > pvc 1/301
> > protocol ppp Virtual-Template11
> > !
> > interface Virtual-Template11
> > ip router isis 1
> >
> > router isis 1
> > is-type level-1
> >
> >
> > BB1#s ip route
> > <snip>
> > i*L1 0.0.0.0/0 [115/10] via 54.1.8.6, Virtual-Access3.1
> >
> >
> > The default route is the only Level-2 route that R6 passes to BB1.
> >
> > From what i know about IS-IS, by default a Level-1/2 router (R6)
>doesn4t
> > pass Level-2 routes to a Level-1 router (BB1). You need route leaking
>to
> > pass Level-2 routes to a Level-1 area.
> >
> > Could somebody tell why it works in this way?
> >
> > If you want more debugs or shows, just tell me.
> >
> > Thanks for the help
> >
> > _________________________________________________________________
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