Is it possible to get multiple is-is adjacencies on a same port with VOSS7 on VSP 7200 series switches ?

[BrunoE]

This question because we use an operator's L2 VPN tunnels to interconnect our VSP on different remote sites. Instead of using a different tunnel for each adjacencie, it would be easier that switches could see each other via same L2 tunnel, forming so a full mesh design.

[BrunoE]

Hi Ludovico,

Thanks for your fast and precise response. We'll work on a such design in the next weeks.

[Ludovico_Steven]

SPB ISIS adjacencies are point-point only. If doing Fabric Connect SPB over a WAN, you will need to use Fabric Extend. There are 2 Fabric Extend modes, using VXLAN and using VLAN translation (of the BVIDs). In your case it sounds like the operator is giving you a VPLS (L2 any-any) service. You will thus need to use the Fabric Extend VXLAN mode (to male it look like point-point to SPB). In this mode, you set the FE source IP on the VSP, and then created FE ISIS adjacency towards remote IP addresses using logical ISIS interfaces. A VXLAN tunnel is used for each of those remote adjacencies. And yes, you can now have all your logical ISIS adjacencies running on the same physical Ethernet port.