06-27-2012 05:34 AM - edited 03-04-2019 04:48 PM
We do have a network configured as Hub and Spoke with 200 branches using DMVPN Phase 3 with OSPF technology for communication . We have 2 links at each branch having different bandwidth , once primary fails secondary takes over . Customer wants to also utlize both the links becuase the other one is sitting there idle and only used for backup purpose .
I was thinking to change the routing protocol from OSPF to EIGRP with Variance so that we can use both links at a time . We also have VoIP running on this network .
Has anyone worked on such a design and will that be a good practise to configure EIGRP with variance in a production network like this ?
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06-27-2012 06:37 AM
I don't see any issues with this design. I have a network running with EIGRP over DMVPN with around 200 branches. I understand why you feel it could be a problem.
Variance command as it says is to enable you to perform unequal load balancing. But in actual Traffic load balancing will be done by CEF & not by EIGRP. So, it is per-destination load balancing by default. This is not going to cause any troubles. Do let me know if you need more info.
Run EIGRP with variance & utilize your backup link !
Regards
Vivek
06-27-2012 06:37 AM
I don't see any issues with this design. I have a network running with EIGRP over DMVPN with around 200 branches. I understand why you feel it could be a problem.
Variance command as it says is to enable you to perform unequal load balancing. But in actual Traffic load balancing will be done by CEF & not by EIGRP. So, it is per-destination load balancing by default. This is not going to cause any troubles. Do let me know if you need more info.
Run EIGRP with variance & utilize your backup link !
Regards
Vivek
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