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Sham link metrics - please help!

Hello,

I am a customer who has just had a sham link set up, so that OSPF area 0 runs on both sides of the MPLS.

However, I am now getting really high metrics in the routing tables on the CEs. I need to be able to modify the vlaues so that I can load balance with another MPLS. Previously we had tunnels running between our own routers and used the ip ospf cost command on the tunnel interfaces, but this doesn't make a difference if I try it on the CEs.

Please can someone help me? Is it something that my service provider could do - i.e. set it so that the advertised metric of routes coming through either end is say 10?

Any help most definitely appreciated.

Thanks,

J

1 ACCEPTED SOLUTION

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Re: Sham link metrics - please help!

Leanne

Your provider can definitely help you with the metrics by setting a metric on the Sham-link itself. But iam suprised why you are unable to change the cost on the local CE interfaces ? Are you sure that it is not being reflected across the OSPF cloud ?

3 REPLIES
Silver

Re: Sham link metrics - please help!

Leanne

Your provider can definitely help you with the metrics by setting a metric on the Sham-link itself. But iam suprised why you are unable to change the cost on the local CE interfaces ? Are you sure that it is not being reflected across the OSPF cloud ?

New Member

Re: Sham link metrics - please help!

Hi Gautam,

Actually yes it is working on the CEs now, I was entering the command on the serial rather than ethernet interface. I think I will just play around with the cost values until the metrics from the two MPLSs are equal.

Thanks,

Leanne

Re: Sham link metrics - please help!

Hi,

Yes , its possible and your SP can do it.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080087ce2.html#wp1025241

Is that you have two connections with two providers ???

regards

vanesh k

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