Unable to shift the traffic using EIGRP

[Mani3]

Hi,

Can anyone help me with this topology. (Topology attached) I want to shift the traffic using EIGRP protocol. My destination in 10.68.96.0/30 network. Currently the traffic is preferring from R5  via R3,R2 and R1. but i want to shift the traffic via R5 R4 R1 using EIGRP. I have tried via offset-list but still no luck. Any help

Configs attached.

[Giuseppe Larosa · Accepted solution]

Hello Mani3,

or you apply the offset list  outbound the upstream router in your case R3, or you use an offset-list inbound applied to fas0/1 on R5.

Applying an offset-list outbound on R5 on interface fas0/1 to R3 is not effective to achieve your target. Because the R5 router has already learned about prefix 10.68.96.0/30 from R3 and R4 in the opposite direction.

Try to apply the offset-list out of R3 interface to R5 on R3 router eigrp process and you should see the desired effect.

To be noted in EIGRP the offset list increases the delay metric component.

Also, in the used access-list you need to refer the prefix that you want to increase the delay metric component

ip access-list standard B*************V
permit 184.16.54.0 0.0.0.3

should be

ip access-list standard B*************V
permit  10.68.96.0 0.0.0.3

EIGRP has distance vector properties so you need to refer directly the prefix you want to influence the best path choice.

Hope to help

Giuseppe

[Mani3]

Dear  Giuseppe,

Thanks a lot.. it worked and it was helpful now i understood where i did mistake.Really thanks.....

[balaji.bandi · Accepted solution]

#sh ip eigrp topology 10.68.96.0/30

and change the delay value to change the path.

[Mani3]

Hi Balaji,

Thanks for the suggestion. i will do the change and post the reply shortly.

[Martin L · Accepted solution]

To manipulate EIGRP path ways u can use following:
- metric (bandwidth and delay but only delay is preferred)
- offset-list
- filtering routes using Distribute List

[Mani3]

Hi martin,

Thanks a lot for the suggestion.But can u explain me how can i shift the traffic with the help of Distribute list ..

[Martin L]

if u have 2 ways to get to router x, use distribute list to filter a prefix X on interface X to block it ; the other interface Y will allow same prefix X to come in. if u doing CCIE RS, i recommend INE workbooks