Friday, January 3, 2020

Campus Core Switch Replacement

I need some help with Core switch replacements we have brocade MLXe-8 and 16 cores running VPLS over MPLS and OSPF routing between 3 sites. Inter-site links are 10GbE. Also we have Dell 2x TOR 5248 switches on VLT that support VxRail / VMware ESX servers with stretched clusters between two of the DCs using layer 2 stretched vlan.

1) Any ideas for replacement and resiliency ?

2) Is VxLAN and EVPN the future replacement for VPLS over MPLS or are there alternatives ?

3) Can you vmotion traffic across site using VxLAN ? i.e Direct Link between site A to B fails so looking to vmotion vms from Site A to site B via site C using existing links to A and B considering we have a stretched vlan using same IPs at site A and B.

4) The Dells have 4 x 10GbE to MLX Core so just wondering about oversubscription as currently there are current 5 x 25GbE ESX host connections per TORS switch is this an issue?.



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