Eigrp routing question

Unanswered Question
May 5th, 2008

Hi,

I have the following output

router#sh ip route 167.175.107.0

Routing entry for 167.175.107.0/24

Known via "eigrp 4944", distance 90, metric 111104, type internal

Redistributing via eigrp 4944

Last update from 200.1.147.162 on ATM12/0/0.78, 00:48:03 ago

Routing Descriptor Blocks:

* 200.1.147.162, from 200.1.147.162, 00:48:03 ago, via ATM12/0/0.78

Route metric is 130560, traffic share count is 17

Total delay is 100 microseconds, minimum bandwidth is 20000 Kbit

Reliability 255/255, minimum MTU 1500 bytes

Loading 98/255, Hops 2

200.1.147.121, from 200.1.147.121, 00:48:03 ago, via ATM12/0/0.60

Route metric is 111104, traffic share count is 20

Total delay is 180 microseconds, minimum bandwidth is 24038 Kbit

Reliability 255/255, minimum MTU 1500 bytes

Loading 98/255, Hops 3

200.1.147.150, from 200.1.147.150, 00:48:03 ago, via ATM12/0/0.76

Route metric is 130560, traffic share count is 17

Total delay is 100 microseconds, minimum bandwidth is 20000 Kbit

Reliability 255/255, minimum MTU 1500 bytes

Loading 108/255, Hops 2

200.1.147.154, from 200.1.147.154, 00:48:03 ago, via ATM12/1/0.77

Route metric is 130560, traffic share count is 17

Total delay is 100 microseconds, minimum bandwidth is 20000 Kbit

Reliability 255/255, minimum MTU 1500 bytes

Loading 121/255, Hops 2

I dont want that packects take this route 200.1.147.121, from 200.1.147.121 as a second option but I want that packets balance using the other 3 routes.

The route 200.1.147.121, from 200.1.147.121 is not a diect route it is why I would like to have this route as a backup route. (last option)

What can I do to achieve this task?

Thanks

Regards

I have this problem too.
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mounir.mohamed Mon, 05/05/2008 - 10:01

HI,

Simply you can influence this by increasing the bandwidth / delay on this PVC.

To prevent interference with Qos and other routing protocols, keep it simple and increase the delay to get this path out of best paths

R1(config-subif)#do sh int atm1/0.1 | inc DLY

MTU 4470 bytes, BW 149760 Kbit,DLY 80 usec,

R1(config-if)#int atm1/0.1 point-to-point

R1(config-subif)#delay 1000

R1(config-subif)#do sh int atm1/0.1 | inc DLY

MTU 4470 bytes, BW 149760 Kbit, DLY 10000 usec,

Please rate helpful posts.

Best Regards,

Mounir Mohamed

Leonardo A Pena... Mon, 05/05/2008 - 10:33

Hi Mounir, I have a question Should I modify the delay in the atm interface of both routers (Site A & Site B)or only in the interface atm of one router (Site A)

Thanks

Regards

mounir.mohamed Mon, 05/05/2008 - 10:50

Hi,

Yes From both sides.

changing the delay from one side will increase the metric value of the advertised routes on the receiving side.

Example:

R1 EIGRP neighbor with R2, R1 advertise 100.10.10.0/24 if you changed the delay on R1 serial interface the metric of 100.10.10.0/24 on R2 will be increase, so to make sure your routing symmetrical increase the delay on both sides.

Please mark the conversation as solved, if any of post solved your problem.

Best Regards,

Mounir Mohamed

Leonardo A Pena... Wed, 05/07/2008 - 07:49

Hi mounir I would like to mark it and all post that help to me solving my problems but How can I do that?

Regards

mounir.mohamed Wed, 05/07/2008 - 11:51

On the right side of each post there is a small drop down menu called Rate This post, from this menu choose the appropriate points and click submit.

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