Hi Hunter The only thing that puts me off this approach is the tromboning of traffic for the primary L2 path. It will reduce the capacity of the CE router. PC-Host > Customer L2 > CE L2 attachment interface > CE Tunnel, back to Customer L3 for transit of tunnel traffic.
Thanks Rick Gamma.co.uk On Sun, 23 Dec 2018 at 17:46, Hunter Fuller <[email protected]> wrote: > Yes, this is what we are planning. We are landing the L2 circuit (in our > case, it's over DWDM) on the VTEPs directly. But they also have access to > an L3 path through the IGP. The tunnel is always in use. > > -- > Hunter Fuller > Network Engineer > VBH Annex B-5 > +1 256 824 5331 > > Office of Information Technology > The University of Alabama in Huntsville > Systems and Infrastructure > > > On Sun, Dec 23, 2018 at 11:03 AM Arie Vayner <[email protected]> wrote: > >> One approach I can see to make it work consistently regardless what path >> it >> takes is to use the overlay at all times, even when the primary path is >> up. >> >> Basically you just make the layer 2 link routed (i.e. terminate it with >> layer 3 ports on both ends), and run the VXLAN one hop before (or anywhere >> it makes sense). >> >> This way you just run a vxlan extension over a layer 3 redundant path. >> >> On Sun, Dec 23, 2018, 02:48 Richard Clayton <[email protected] wrote: >> >> > Hi Arie >> > >> > I did encounter the MTU requirement and configured the lab to allow for >> > it. VXLAN may be the future but this topology isn't really what it was >> > intended for, due to the loop it creates (same with OTV). I was still >> able >> > to ceate a working design for both protocols regardless. >> > >> > Would interesting to see how others would meet the requirement with this >> > particular set of constraints. >> > >> > Thanks >> > Rick >> > >> > gamma.co.uk >> > >> > >> > >> > On Sat, 22 Dec 2018, 20:29 Arie Vayner <[email protected] wrote: >> > >> >> Vxlan is the future... 😉 >> >> Be very careful with the mtu implications. >> >> >> >> Tnx, Arie >> >> >> >> On Sat, Dec 22, 2018, 03:25 Richard Clayton <[email protected] >> wrote: >> >> >> >>> Hi Guys >> >>> >> >>> Scenario >> >>> >> >>> Customer has dual homed geographically seperated site into mpls wan. >> >>> They >> >>> also have a single layer 2 circuit running between the two. The >> >>> requirement is to backup the layer 2 over the wan circuits. The wan >> >>> hardware at both sites is cisco 4k ios xe. >> >>> >> >>> I'm interested to know how you guys would achieve this. I've had the >> >>> luxury of 4 days in the lab testing VXLAN, OTV and L2TPV3 xconnect >> >>> between >> >>> the two 4k routers, also did JDSU throughout testing over the tunnel, >> was >> >>> quite interesting. >> >>> _______________________________________________ >> >>> cisco-nsp mailing list [email protected] >> >>> https://puck.nether.net/mailman/listinfo/cisco-nsp >> >>> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> >>> >> >> >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
