From: David (d.ankers@xxxxxxxxxxxxxx)
Date: Sat Aug 19 2000 - 22:53:09 GMT-3
Earl,
Instead of using route maps to control distribution, why not use distrubute
lists? This seems too simple, what am I missing?
David
----- Original Message -----
From: "Earl Aboytes" <earl@linkline.com>
To: <Padhu@steinroe.com>; <ccielab@groupstudy.com>
Sent: Saturday, August 19, 2000 3:30 AM
Subject: RE: Redistribution filters using Tags instead of specifying
networks in ACL
> 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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