Hello,
We are currently in the progress of deploying a EVPN/VXLAN (Spine-Leaf) architecture in our datacenters. This used to be a flat layer 2 network with seperation of networks by using VLANs. One off our internal "customers" (same company) has its office networks connected to our datacenters. One connection to DC-A using a dark fiber and one connection (backup) using EVPN (leased connection) to DC-B as a backup for when the fiber might fail. These connections are an extiontion off the office network to equipment in the DC's.
So for example: the customer network has VLAN 10 tagged on their dark fiber and VLAN 10 tagged on the EVPN. The switches in both datacenters are interconnected over their own dark fibers and have the VLAN 10 tagged on the trunk between them. So pretty much all flat layer 2. Currently we have STP configured with a lower priority on the EVPN to prevents loops. See image:
Image may be NSFW.
Clik here to view.
In the new situation we would still have the dark fibre and the EVPN connected to a leaf switch each in a datacenter With their VLAN tags VLAN10. On the VXLAN we would define the VLAN 10 with a VNI off 1001. See simplified image below:
Image may be NSFW.
Clik here to view.
What are the posibilities dealing with loops in this scenario? Since we can't use STP with EVPN/VXLAN is this even possible?
Like to hear from you!
