10-11-2024 09:42 AM
Hi,
Based on picture above, assuming that's cisco SD-WAN in DC. How cisco SD-WAN in DC serve the traffic from sd-wan branch? Will both device in DC be active-active? or only one will serve the traffic from branch?
If the answer is active-active, how to ensure symmetric traffic? I mean traffic from branch towards WAN edge A DC, the return traffic will also come towards WAN Edge A DC, not WAN Edge B DC.
10-11-2024 09:48 AM
It can work as active/passive or active/active
This depends if you use preference or not with OMP route / TLOC
If you dont use preference then you will get load balance.
MHM
10-11-2024 10:13 AM
If active active, how sd wan DC advertise branch prefix to campus LAN? Will both sdwan router advertise the same branch prefix (potentially asymmetric)? Or both sdwan router will advertise different branch prefix (symmetric)?
10-11-2024 09:50 AM
Its all depends on how you configure - what route you like to use (here we call colors in sd-wan terminology)
check below some examples provide you that information.
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/SDWAN/cisco-sdwan-design-guide.html
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