From: Swaroop Potdar (swarooppotdar@hotmail.com)
Date: Sun Dec 05 2004 - 12:13:30 GMT-3
Rohan,
how did u do the route leaking in the first place...once the routes are
leaked into a L1 area then u dont have to do much to redistribute them into
OSPF downstream from a L1 area.
I just simulated this as a scenario just check this out...
R1 and R5 are into L2 adjacency. R5 gets some L2 routes and leakes them into
L1 for R6 and inturn R6 redistributes the received "ia" routes into OSPF.
I have omitted most content and just kept two routes constant through out
for clarity.
HTH,
Swaroop
=============================================
R1 <--L2-->R5<--L1-->[ISIS{R6}OSPF]<--area0-->R4
=============================================
R1
!
router isis
redistribute connected level-1-2
net 49.0002.0000.0000.0003.00
!
R1#sh ip rou
C 119.0.0.0 255.0.0.0 is directly connected, Loopback119
C 118.0.0.0 255.0.0.0 is directly connected, Loopback118
================================
R5
!
router isis
redistribute isis ip level-2 into level-1 distribute-list 101
net 49.0001.0000.0000.0001.00
!
R5#sh ip rou
i L2 119.0.0.0 255.0.0.0 [115/10] via 172.16.6.1, Serial0/0.1
i L2 118.0.0.0 255.0.0.0 [115/10] via 172.16.6.1, Serial0/0.1
==
R6
!
router ospf 10
log-adjacency-changes
redistribute isis level-2 subnets
network 172.16.4.1 0.0.0.0 area 0
network 172.16.10.1 0.0.0.0 area 0
!
router isis
redistribute ospf 10 level-1-2
net 49.0001.0000.0000.0002.00
is-type level-1
!
R6#sh ip rou
i ia 119.0.0.0 255.0.0.0 [115/148] via 172.16.7.1, Serial0/0.3
i ia 118.0.0.0 255.0.0.0 [115/148] via 172.16.7.1, Serial0/0.3
i*L1 0.0.0.0 0.0.0.0 [115/10] via 172.16.7.1, Serial0/0.3
===
R4
router ospf 10
log-adjacency-changes
network 172.16.4.2 0.0.0.0 area 0
network 172.16.9.2 0.0.0.0 area 10
!
R4#sh ip rou
O E2 119.0.0.0 255.0.0.0 [110/20] via 172.16.4.1, 00:07:41, Serial0/0.1
O E2 118.0.0.0 255.0.0.0 [110/20] via 172.16.4.1, 00:07:41, Serial0/0.1
>From: "James Yeo" <james@net-brigade.com>
>Reply-To: "James Yeo" <james@net-brigade.com>
>To: "'Rohan Grover'" <rohang@cisco.com>, "'Edwards, Andrew M'"
><andrew.m.edwards@boeing.com>, "'Wang Dehong-DWANG1'"
><Dehong.Wang@motorola.com>, "'De Witt, Duane'"
><duane.dewitt@siemens.com>, <ccielab@groupstudy.com>
>Subject: RE: ISIS route leaking
>Date: Sun, 5 Dec 2004 13:05:58 +0200
>
>You cannot leak a level 1 router back out. Create a summary address or
>something similar if you need to advertise reachability.
>
>Kind regards
>
>James
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Rohan Grover
>Sent: Sunday, December 05, 2004 12:11 PM
>To: 'Edwards, Andrew M'; 'Wang Dehong-DWANG1'; 'De Witt, Duane';
>ccielab@groupstudy.com
>Subject: RE: ISIS route leaking
>
>Hi,
>
>Sorry for bringing up this old post, but I'm unable to redistribute the
>leaked ISIS routes into OSPF. Itried the method suggested
>below but no luck.
>
>Also tried it another way which I've pasted
>
>Is it really not supported or do I need to try harder?
>====
>
>Configs
>-----------
>
>router ospf 1
> log-adjacency-changes
> redistribute isis level-1-2 subnets route-map REDISIS
> network 138.10.111.0 0.0.0.255 area 0
> network 172.16.16.16 0.0.0.0 area 0
>!
>router isis
> net 49.0005.aaaa.aaaa.aaaa.00
> is-type level-1
> redistribute ospf 1 metric 10 level-1-2
> passive-interface Loopback0
> passive-interface Loopback1
>!
>ip classless
>no ip http server
>no ip http secure-server
>!
>!
>!
>access-list 1 permit any
>!
>route-map REDISIS permit 10
> match ip address 1
> set metric 20
>
>=============
>
>Thanks
>Rohan
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Edwards, Andrew M
>Sent: Friday, November 12, 2004 12:03 AM
>To: Wang Dehong-DWANG1; De Witt, Duane; ccielab@groupstudy.com
>Subject: RE: ISIS route leaking
>
>
>When you do route leaking you specify the type of ISIS route being internal
>or external.
>
>If they are external then they do not get directly redistributed in an:
>
>Router ospf 1
>Redistribute isis metric xx metric-type xxx subnets
>
>What gets redistributed is the L1 routes only.
>
>If you want to redistribute the leaked routes as well, use a route-map and
>you will capture them on a complete match or
>individually.
>
>Route-map isisleakedroutes permit 10
>Match metric-type <internal/external> <-tell it which types
>Set metric xx
>
>Route-map isisleakedroutes permit 20
>Set metric xx
>
>
>Or just
>
>Route-map isisleakedroutes permit 10 <- grabs them all
>Set metric xx
>
>
>
>At least that's what I remember... Anyone got a pin?
>
>-----Original Message-----
>From: Wang Dehong-DWANG1 [mailto:Dehong.Wang@motorola.com]
>Sent: Thursday, November 11, 2004 8:28 AM
>To: 'De Witt, Duane'; ccielab@groupstudy.com
>Subject: RE: ISIS route leaking
>
>
>I hit the same situation one week ago when tring to redistribute ISIS into
>RIP with Version 12.2(15)T14. You get only L1 routes out.
>It might be the way they designed.
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of De
>Witt, Duane
>Sent: Thursday, November 11, 2004 10:21 AM
>To: ccielab@groupstudy.com
>Subject: ISIS route leaking
>
>
>Hi
>
>
>
>I have leaked L2 routes into a L1 area. I now want to redistribute these ia
>routes into OSPF. On this L1 router I have ia routes and
>L1 routes. When redistributing into OSPF I only get the L1 routes in the
>OSPF database and not the ia routes.
>
>
>
>Is this a limitation or am I doing something wrong?
>
>
>
>Regards
>
>Duane de Witt
>
>Consulting Systems Engineer
>
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Regards,
Swaroop.
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