How can i configure redundancy with this setup?

[pspitadmin]

I have 4 nexus 9k switches.

Two are at one site and two are at the other connected by a single Layer 2 fiber connection. We're planning on adding BiDi transceivers so we can have two connections like below. what i want to know is if there's a better method of redundancy than STP.

Right now i only know of STP providing redundancy in case one of the switches fails. However, the convergence time takes a while, at least in GNS3 but there's a lot more factors to think about, and i was wondering if there were any better solutions to this.

We are not at this time able to make these into layer 3 connections. It isn't ideal i know. Any help would be appreciated.

[vinugenie]

Hi,

If you want to go with pure L2 solution, you can configure VPC. This will provider you better redundancy than STP alone. On the other hand, I would recommend that you go with something like VXLAN-EVPN. This way you can expand your L2 domain while leveraging ECMP capabilities of L3 underlay which can run between the N9ks.