From: OzgurG@garanti.com.tr
Date: Fri Apr 02 2004 - 16:05:24 GMT-3
remove route leaking on R6, you ll see L1 default is still there...
does that mean something?
Ozgur
________________________________
From: nobody@groupstudy.com on behalf of David Hurtado
Sent: Fri 4/2/2004 9:53 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
This archive was generated by hypermail 2.1.4 : Mon May 03 2004 - 19:48:41 GMT-3