Question on 2 DCs

[kolilcolik]

i have a dc-a and dc-b 3000 miles apart and the default gateways in the vlans resides in FW in dc-b of dc-a vlans. The RTT between these dcs are in the range of 60ms and the traffic within the vlans in dc-a have to get routed by the fw in dc-b which takes too much time. What are the possible solutions to make it work?

[M02@rt37]

Hello @kolilcolik 

In your DCs, tradionnal 3-TIer architecture or spine/Leaf architecture ?

[MHM Cisco World]

Hard to answer you

1- you use vxlan' then solution is using anycast

2- traditional DC (3 tier) using cluster between FW 

MHM

[balaji.bandi]

Depends on budget - i can only think of Latest Modern DC deployments.

May be VXLAN EVPN solution with anycast gateway, rather old style VLAN method.

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-739942.html

[julian.bendix]

You wrote about "dc-a" VLANs... so your VLAN do NOT really have the need to be stretched across the two DCs?

3000 Miles is a long way, so far I always opted for building seperated DCs without VLAN stretching in between if they are that far from each other.

If you do not have the need for stretched VLANs, I would go for seperated, standalone DCs.