Where are these redistributed static routes from?

Unanswered Question
May 29th, 2008

Attached is my router config. Can someone please help me figure out why these redistributed routes are showing up in the eigrp top table. Here is the show ip eigrp top output:

Router#sh ip eigrp top

IP-EIGRP Topology Table for AS(100)/ID(192.168.254.6)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - reply Status, s - sia Status

P 10.6.1.0/24, 1 successors, FD is 3388928

via Rstatic (3388928/0)

P 10.22.1.0/24, 1 successors, FD is 3388928

via Rstatic (3388928/0)

P 10.102.0.0/16, 1 successors, FD is 3388928

via Rstatic (3388928/0)

P 10.103.0.0/16, 1 successors, FD is 3388928

via Rstatic (3388928/0)

Router#

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Richard Burts Thu, 05/29/2008 - 09:44

Jordan

The posted config show EIGRP 100 with no network statements and no redistribute statements. Is that correct? Has it always been that way?

I am wondering if there used to be some statements under router eigrp 100 that have been removed. If you reboot the router (saving config if needed) do these still show up?

I am also puzzled that some of the static routes pointed at the multilink are in the topology table. But not the routes for 10.0.0.0/16, 10.101.0.0/16, 10.105.0.0/16, or 172.20.181.0/24. Is it possible that these routes were added later than the ones that are in the table (which would suggest that something in router eigrp 100 changed part way through configuring the static routes.

HTH

Rick

jordanmed Thu, 05/29/2008 - 11:20

We have currently only been using static routes. I am now trying to setup EIGRP routing. When I first enabled eigrp 100 I had the network statement 10.0.0.0 with no redistribute commands, but once I noticed the rstatic routes in the topology table I got confused. I then added the network statement 10.2.0.0 0.0.255.255 and removed 10.0.0.0. I have also added the redistribute static command. After adding that command I showed all 9 static routes as rstatic, as expected. Then I did a no redistribute static and still have 4 rstatics. All static routes were here before I enabled eigrp. I am also perplexed as to why it chose to only redistribute 4 of them, or any at all for that matter. I dont want to reboot right now, but maybe that will fix it.

Richard Burts Thu, 05/29/2008 - 11:46

Jordan

The additional information does help some. Especially knowing that at one point there was a network statement in the config and a redistribute command. One thing about static routes that point to an outbound interface. If the interface that they point to does match a network statement then the routing protocol will pick up those routes in the protocol without an explicit redistribute statement. And then you had a redistribute statement. So there are logical explanations for how the entries got into the table. The puzzle now is that when you removed those statements only some of the entries were removed from the table.

That is a puzzle and I would like to know the explanation. But my advice to you is to not worry much about this. When you get to a stable config for EIGRP the correct entries will be in the table and when you form neighbor relationships the correct entries will be advertised. In the meantime the failure to remove a couple of entries when the statements were removed from the config should not impact how your router runs.

HTH

Rick

jordanmed Thu, 05/29/2008 - 12:12

Those statements being there were really bugging me, so I removed eigrp and reenabled it. Now my eigrp topology looks like I expect it to.

Router#sh ip eigrp top

IP-EIGRP Topology Table for AS(100)/ID(192.168.254.6)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - reply Status, s - sia Status

P 10.2.0.0/16, 1 successors, FD is 28160

via Connected, FastEthernet0/0

P 192.168.1.0/24, 1 successors, FD is 30720

via 10.2.1.5 (30720/28160), FastEthernet0/0

P 10.99.1.16/30, 1 successors, FD is 2221056

via 10.2.1.5 (2221056/2218496), FastEthernet0/0

Richard Burts Thu, 05/29/2008 - 12:32

Jordan

Removing and replacing the EIGRP config was an effective way to start over.

Congratulations. Now you are off to a good start.

HTH

Rick

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