From: Roman Rodichev (rodic000@xxxxxxxxxxx)
Date: Sun Jun 10 2001 - 18:52:02 GMT-3
Rich, I didn't understand your response. Please elaborate on this.
What error message are you talking about? You can use matching route tags
when redistributing without a problem.
For example, ---BGP--R1----OSPF---R2----OSPF----R3---BGP
R1:
router ospf 1
redistribute bgp 2 tag 69
R3
router bgp 2
redistribute ospf 1 route-map BLOCK_EXBGP
route-map BLOCK_EXBGP deny 10
match tag 69
route-map BLOCK_EXBGP permit 20
this works and this is so much easier than creating an access-list. One just
needs to remember that you can't tag IGRP and RIP routes.
>From: "Richard Geiger" <geiger_rich@hotmail.com>
>To: rodic000@hotmail.com, ccielab@groupstudy.com
>Subject: Re: route tagging
>Date: Sun, 10 Jun 2001 16:02:57 -0500
>
>Becareful with this,
>
>You can use tags for changing information but because thet are examined at
>the interface queue when they come in and go out you can not use them for
>redisitribution purposes. Try it you'll see what I mean. It pops up with
>a error message to this effect when you try to redist with a route-map
>using a match command of tag.
>
>
>>From: "Roman Rodichev" <rodic000@hotmail.com>
>>Reply-To: "Roman Rodichev" <rodic000@hotmail.com>
>>To: ccielab@groupstudy.com
>>Subject: route tagging
>>Date: Sun, 10 Jun 2001 15:47:50 -0500
>>
>>I was going to ask this question long time ago, but I keep forgetting. Is
>>anybody using route tagging to prevent routing loops? Like when you have 3
>>BGP autonomous systems, the middle one runs OSPF, and you want to prevent
>>exBGP routes to get redistributed back into BGP. I'm so used to using
>>route
>>tagging, and I think I will do that in the lab too (instead of matching ip
>>address and maintaning growing access-lists).
>>
>>What is your opinion on this?
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