On 12 September 2012 23:23, Philip Lavine <source_ro...@yahoo.com> wrote: > To all, > > I am trying to extend a layer2 connection over Layer 3 so I can have > redundant Layer connectivity between my HQ and colo site. The reason I need > this is so I can give the "appeareance" that there is one gateway and that > both data centers can share the same Layer3 subnet (which I am announcing via > BGP to 2 different vendors). > > I have 2 ASR's. Will EoMPLS work or is there another option? > > Philip
Depending on your specific requirements, if you simply want to be able to address hosts out of the same subnet and don't need actual layer 2 connectivity you might also want to consider proxy ARP(+NDP). This trades some issues for others, for example you don't need to worry about MTU issues, but it won't forward broadcast packets (this could be either an advantage or disadvantage) or non-IP packets, it also requires you to configure the routers so they know which addresses are at the other site. Lots of disadvantages but there are situations where it might be an option. - Mike
