[j-nsp] EVPN on QFX5200

[Andrey Kostin]

Thank you for reply.
I meant a slightly different thing. Currently my setup is in lab stage 
with QFX5110 as spines and QFX5000 as leaves. I need to connect vlans 
running in EVPN-VXLAN fabric to an aggregation router, ideally two of 
them for redundancy. To have a redundant gateway for hosts sitting in 
VNIs I need to run EVPN L3 gateway somewere. It can be done either on 
aggregation routers or on QFX5110. Putting L3GW on routers means they 
have to run EVPN as well and effectively become leaves for VXLAN fabric. 
It may be a feasible solution in the future but for now we don't want to 
put EVPN-VXLAN in prod network. So, the another option is to run L3 
gateways on spines and somehow route them to agg routers. Possible 
connectivity options between edge routers and spines could be:
- have individual P2P routed links Spine-RTR and run BGP session between 
them. Balancing and redundancy in this case will be provided by BGP+ECMP 
and also limited by their capabilities.
- have LACP to both Spines from each RTR and then L3 interface on each 
spine, BGP from each spine to each RTR. Load balancing is provided by 
BGP multipath+ECMP+LACP. In this case LACP bundle from spines POV is 
switched. Direct connection between spines is necessary in this case. 
ROuters in this topology play CE role for VXLAN fabric but connected to 
spines instead of leaves.

Any recommendations or links to BCP are appreciated.

Kind regards,
Andrey

Vincent Bernat писал 2019-09-21 01:34:
> ❦ 20 septembre 2019 11:47 -04, Andrey Kostin <ankost at podolsk.ru>:
> 
> 
> I am not familiar with MPLS. You need to use QFX10k for the spines as
> the QFX5k are not able to route VXLAN outside (or not able to route at
> all).