RE: ospf-eigrp redistribution

From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Sat Nov 12 2005 - 01:07:13 GMT-3


Hey, John -

This is really cool, because this is exactly the way I do it with distance.
However, someone (forgive me if I forget who), mentioned to just use a the
same tag....since that tag was added as it comes in to the area, it will not
get redistributed back to original network. I have been thinking about it for
awhile, it seems to work and is easy to work with. However, no one commented
on it. Any thought on this? Here it is....

router os 1
      redis eigrp 100 sub route-map REDIST

route-map REDIST deny 10
      match tag 100
route-map REDIST permit 20
      set tag 100

router eig 100
      redis os 1 metric 1 1 1 1 1 route-map REDIST

-----Original Message-----
From: nobody@groupstudy.com
To: Chula Bandara
Cc: ccielab@groupstudy.com; nobody@groupstudy.com
Sent: 11/11/2005 7:16 PM
Subject: Re: ospf-eigrp redistribution

tags is a great method of controlling your redistribution of routes.
the
method i use is:

router os 1
      redis eigrp 100 sub route-map e2o

route-map e2o deny 10
      match tag 110
route-map e2o permit 20
      set tag 90

router eig 100
      redis os 1 metric 1 1 1 1 1 route-map o2e

route-map o2e deny 10
      match tag 90
route-map o2e permit 20
      set tag 110

i just use the AD of each protocol as my tag vaule.

Regards,

John D. Matus
Technical Support / PAS
Fujitsu Consulting
626-568-7716
John.Matus@tokiom.com

             "Chula Bandara"

             <chula_bandara@ho

             tmail.com>
To
             Sent by: ccielab@groupstudy.com

             nobody@groupstudy
cc
             .com

Subject
                                       ospf-eigrp redistribution

             11/11/2005 06:29

             AM

             Please respond to

              "Chula Bandara"

             <chula_bandara@ho

                tmail.com>

issues need to tackle

1. routing loops

2. suboptimal routes.

i have seen different approch to resolve above two.

A. I use route-map with tags to solve 1 and distance with acl to solve
2.

B. some work books i have seen , where they use distance with acl to
reslove both 1 and 2.

in both cases A and B still needs an ACL or prefix list.

While reading the DoC CD in the morning i thought of a different
solution
without using ACL. I donot have a online lab to test this out at this
moment.

This is the solution i am thinking

C. use route-map with tag to solve 1. and use opsf distance command to
manipulate the external distance

ex: if we need to make the distance for external route to 171

ospf distance intra-area 110 inter-area 110 external 171

with this we donot have to use an ACL.

Thanks.



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