Redistributing static routes onto EIGRP (shows up as EX route?)

[jnewton03]

We're starting to move from an all static routes setup to dynamic routing using EIGRP across our WAN. I've enabled EIGRP on all of our spokes (remote offices) and now we're getting ready to enable on the hub (home office). I've got it working with this config:

router eigrp 64

redistribute static

network 10.0.0.0

network 192.168.1.0

distribute-list 60 out

no auto-summary

access-list 60 permit 10.1.1.0 0.0.0.255

access-list 60 permit 172.30.1.0 0.0.0.255

Here is the routing table on the hub router:

172.30.0.0/24 is subnetted, 1 subnets

S 172.30.1.0 [1/0] via 192.168.1.242

10.0.0.0/24 is subnetted, 1 subnets

S 10.1.1.0 [1/0] via 192.168.1.242

192.168.1.0/30 is subnetted, 1 subnets

C 192.168.1.240 is directly connected, FastEthernet0/1

Everything looks good.... until I check the routing table on the spokes. It is showing as an EX route instead of a redistributed static route:

172.30.0.0/24 is subnetted, 1 subnets

D EX 172.30.1.0 [170/30720] via 192.168.1.241, 00:15:27, FastEthernet0/0

10.0.0.0/24 is subnetted, 1 subnets

D EX 10.1.1.0 [170/30720] via 192.168.1.241, 00:15:27, FastEthernet0/0

192.168.1.0/30 is subnetted, 1 subnets

C 192.168.1.240 is directly connected, FastEthernet0/0

Any help would be greatly appreciated. Thanks!

[sundar.palaniappan · Accepted solution]

Jake,

What you are seeing is normal. Any route from an external source, including static routes, when redistributed into EIGRP it would be advertised as an external EIGRP route. Just wondering whether this setup is causing any routing issues?

-Sundar

[jnewton03]

I wont know until this weekend when I enable it. I'll post again if problems come up. Thanks a bunch!

[Richard Burts]

Jake

Sundar is quite right that it is normal behavior for the redistributed routes to show up on the other routers as external routes.

It help me understand the terminology when I think of it this way: for EIGRP an internal route is a route that got into EIGRP via a network statement and an external route is a route that got into EIGRP via something other than a network statement. So any redistributed route in EIGRP will be an external route.

HTH

Rick

[jnewton03]

Ok, I enabled this past weekend and have come up with a few issues:

First, the static redistribution worked just fine. Now the questions:

We have a primary site and a backup site. EIGRP is running between our remote offices and our primary and backup sites. I followed cisco's preferred methond of setting a preferred route so that EIGRP routes to our primary site and the backup is just that, a backup. I followed the instructions located at http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800c2d96.shtml

and set the subinterfaces at our backup site with a higher delay (2500 vs 2000). However, traffic from the remote sites are still preferring that route, even after I increased the delay.

Second, I did enable stub routing at the remote sites, but there is a problem. Each remote site has 5 static routes (default route back to primary site, 2 default routes as backups to our backup site, 1 to the remote site LAN, and 1 to the remote site DMZ). There is a firewall between the remote site router and the remote site LAN/DMZ so those static routes will need to be redistributed. Can I do an 'eigrp stub connected summary static' and use a distribution-list out static with an ACL to limit the redistribution to just the LAN and DMZ routes?

Thanks for all the help. It's much appreciated.