We have 2 data centers at different sites. We have 2 WAN connections and 2 WAN routers on each end for redundancy. We currently have 1 router at each end configured with a L2TPv3 tunnel extending a vlan104 across the 2 sites.
What is the recommended way to add a L2TPv3 tunnel to my redundant routers?
I'm cautious to simply pin up another L2 tunnel since I'm thinking spanning tree won't like having two L2 connections across the WAN.
I think you can extend the same VLAN to your redundant routers and tweak with STP parameters to make one router/link primary and the other secondary.
If your network is MPLS enabled then you can look for enabling ATOM L2VPN as there is a feature called "Pseudowire redundancy" which would be ideal for your requirement. Pseudowire reundancy is not applicable for L2TPv3 based VPNs.
As indicated, there are some features on EoMPLS that aren't available on L2TPv3 with that said, you have not tell us the bandwidth available on those WAN links. If they are Gig links, you simply do nothing. Just connect the switches to the two L2TPv3 enabled interfaces and STP will provide you with a loop free topology.
We don't manipulate the cost on a datacenter interswitch links, I don't see the need to do so on this case - unless you want to force one link over the other.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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