cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1042
Views
0
Helpful
1
Replies

Nexus OTV asymmetric Routing

jay_7301
Level 1
Level 1

Hi All,

I'm new to nexus so please forgive the simple question. We have 2 dc's which are dual homed. 

Site A    >  Site B

Prod7k1 > Prod7k1

Prod7k2 > Prod7k2

we seem to have asymmetric paths between the two sites. So when i type command show otv vlan i can see the following

Site A

Prod7k1 - Active for all odd vlans

Prod7k2 - Active for all even Vlans

Site B

Prod7k1 - Active for all even Vlans

Prod7k2 - Active for all odd Vlans

Is this something i need to look into resolving as we are in a live environment .Can this cause any issue's would it be recommended to get some maintenance in place to resolve this? 

1 Reply 1

Kirk J
Cisco Employee
Cisco Employee

Greetings.

Checking http://www.cisco.com/c/dam/en/us/products/collateral/switches/nexus-7000-series-switches/guide_c07-728315.pdf we see the following:

Is Multihoming Recommended?

If possible, multihoming is always recommended because it adds another layer of redundancy and scalability. When in a multihomed site, all odd VLANs are on one Cisco Nexus 7000 Series Switch, and all even VLANs are on the other Cisco Nexus 7000 Series Switch. Please note that the multihoming of Cisco ASR 1000 Series and Cisco Nexus 7000 Series devices within a single site is not supported.

Basically your config is following the recommended config and is splitting up the vlan traffic between both links.  If one link were to go down, the remaining link would carry all the extended vlans.

Thanks,

Kirk...

Review Cisco Networking for a $25 gift card