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Posted by dennis on December 9, 2007, 5:38 am
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Steven,
your recommendation is really good. I think that would be work
perfectly...with maybe a small exception....so I would like to change
the dead interval under ospf to minimimal with "ip ospf dead-
interval .
So when I remove the ospf process there should be only a short
interrupt while changing the routing tables from ospf to eigrp
routes..
dennis
> how about if you use the "distance" command? an option would be to add
> the new protocol without removing the old one but since the default
> admin distance of eigrp is lower than ospf (90, 110), once u add in
> eigrp those routes will be preffred, unless you lower the admin
> distance of ospf (lower than 90) until you are ready to convert to
> eigrp.
>
> ex
>
> router eigrp 1
> network 172.16.0.0
>
> router ospf 1
> network 172.16.0.0
> distance 70
>
> once the eigrp process is added, ospf will still be preferred and when
> u are ready to go to eigrp, just change the distance of ospf back to
> the default distance of 110, then the ospf routes will age out and
> voila! your eigrp routes are now preferred. (or u can force it via
> clear ip route *), if something goes wrong, u can back out easily by
> returning the distance command under ospf to 70 so the ospf routes
> will be preferrd. once everything is working and stable, u can remove
> the ospf process on all the routers without further distruptions
>
> hope this helps!
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