Delay problem on EIGRP

[Bob Greer]

Hi There,

Thanks for reading.

I have a LAN with redundant routes out to separate ISPs.  We have a single instance of EIGRP running throughout. 

I'm trying to prefer R2 as the route OUT by increasing delay on R1.  I've done this before and it's easy.  This time, the route isn't moving over to R2.

What kinds of things can cause this?

Thanks,

Bob

[Deepak Kumar]

you didn't attach configuration, any T-shoot output etc so it's not easy to guide you because you mentioned that you did it before. 

I hope below link will help to resolve your issue-

https://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13673-14.html#anc13

Regards,

Deepak Kumar

[Georg Pauwen]

Hello,

in addition to Deepak's post, make sure that there is no problem with the feasible distance. Post the output of:

show ip eigrp topology

[Julio E. Moisa]

Hi

I agree with Georg, you can verify the feasible succesor with the topology table, show ip eigrp topology. You could use the formula to know the delay value required, it can configured on your router's interface facing to the ISP. In some cases you could require an eigrp refresh neighborship between the routers (it should be the last option and over an authorized maintenance window)

Also you could try to use offset-list to manipulate the traffic.

Hope it is useful

:-)

[Bob Greer]

Hi guys,

Thanks for writing.

I think my problem may be in my EIGRP network statement.  The attachments are:

EIGRP topos for both routers

IP INT Brief for both routers

EIGRP network statements for both routers

Diagram

I'm trying to set the path to the 10.150.0.0 network to exit out of RTCA101.  I'd done that before by adjusting the delay on the 10.150 Tunnel on RTCA102 to MUCH higher than the delay on the 10.150 Tunnel on the other router.  When matched on the remote side, the traffic moved over.  This time, it just created asymmetric routes.

Thanks again for your time!

Bob

[Georg Pauwen]

Hello Bob,

what are RT01 and RT02 ? I assume these are routers in the LAN cloud ? What router is connected to these two on the LAN side ? That is the router we need to see the output of 'show ip eigrp topology' from...

[Bob Greer]

The RT01 & RT02 names are typos.  Those are actually RTCA101 & RTCA102.  The EIGRP summary the two routers are advertising is 10.144.240.0/20

RTCA101 tunnels to this router: RTUS301

RTCA102 tunnels to RTUS302

Attached is the EIGRP topologies for both US3 routers specific to the 10.144.240.0/20 network.

Thanks again!

Bob