From: Keane, James (James.Keane@agriculture.gov.ie)
Date: Fri Apr 01 2005 - 11:52:25 GMT-3
Taking this a little futher - the original problem was getting loopbacks (or connected) into ISIS
Simon rightly pointed out the ways
On an interesting note -
router isis
passive-interface loopback 1
enters loop 1 into the routing database as an internal route
but
route-map CONNECTED
match interface loop 1
router isis
redistribute connected route-map CONNECTED
enters loop 1 into the routing database as an external route
This is because when you 'redistribute' you are inserting external routes to ISIS
Just in case you see a funny in the lab !
-----Original Message-----
From: simon hart [mailto:simon.hart@btinternet.com]
Sent: 31 March 2005 20:50
To: Lanny Ballard; ccielab@groupstudy.com
Subject: RE: redistribution question
Lanny,
A very key point to remember with ISIS is that it will not import any
locally connected interfaces that are participating in another routing
protocol.
There are only three ways of getting the Loopback into ISIS
1. IP router isis on the loopback interface
2. Passive interface loo 0 under router isis
3. redistribute connected into isis
You mention that the interface shows up as external within the OSPF
database. ISIS does not look at the OSPF database, it will look at the
routing table. The routing table will show the loopback as connected (C),
and therefore will not take it into its routing process.
HTH
Simon
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Lanny Ballard
Sent: 31 March 2005 16:50
To: ccielab@groupstudy.com
Subject: redistribution question
Can anyone explain to me this scenario?
Let's say I have an OSPF process running, and I have something like this
int lo 0
ip add 192.168.0.1 255.255.255.0
router ospf 1
net 10.0.0.1 0.0.0.0 area 0
redistribute connected metric 1 subnets
router isis
net 49.0001.1111.1111.1111.00
redistribute ospf 1 metric 10
So basically, I'm trying to get my loopback interface into the isis
database, but it won't redistribute!
The connected interface shows up as external in my ospf database.
Now I know I could just enable isis on the interface to get it in there but
I'm not trying to do it that way.
I can't get this to work no matter what routing protocol I try, (RIP, EIGRP,
ISIS)
Any help would be greatly appreciated.
Thanks!
Lanny
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