From: Earl Aboytes (earl@xxxxxxxxxxxx)
Date: Fri Aug 18 2000 - 22:30:45 GMT-3
Padhu,
What you should do is deny those that you don't need and allow everything
else. If you had a router with four interfaces and three were in OSPF and
one in RIP you would use your route map to deny the three ospf interfaces
and allow the rest. Also you need to make the three ospf interfaces passive
for RIP.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Earl Aboytes CCIE #6097
Senior Technical Conultant
GTE Managed Solutions
805-381-8817
earl.aboytes@verizon.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Padhu@steinroe.com
Sent: Friday, August 18, 2000 6:08 PM
To: ccielab@groupstudy.com
Subject: Redistribution filters using Tags instead of specifying networks in
ACL
Hi,
In most of th redistribution scenarios, we end up creating ACLs for the
native networks/protocols and allow only them to be injected into the target
protocol.
Eg:
router ospf 100
network 137.25.8.8 0.0.0.0 area 0
redistribute rip subnets routemap rip-ospf metric 5
router rip
network 10.0.0.0
network 130.10.0.0
redistribute ospf 100 metric 5 routemap ospf-rip
access-list 1 permit 10.0.0.0 0.255.255.255
access-list 2 permit 137.25.0.0 0.0.255.255
route-map rip-ospf permit 10
match ip address 1
route-map ospf-rip permit 10
match ip address 2
The problem with this approach is that whenever a new network is added to
the rip network,yu need to modify the ACL and the same with adding another
network into ospf.
I would like to know if is possible all routes originated from RIP tagged
with some number lets say 444 and then all routes originating from ospf as
555 that way when we apply the redistribution filters we can just do match
tag 444 or match tag 555 in the route-maps on either side to prevent the
routes coming back in via the target protocol.
I'd appreciate if any one can throw some light on this ? Thanks.
Cheers,Padhu
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