ECMP approach used mostly...

[MrVmware9423]

Dear Team,

Based on below daigrams which approach mostly used by customers. 

8 Way ECMP with 8 Edge Nodes

8 way ECMp with 4 Edge Nodes

Thank you in advance

[shank89]

It's pretty hard to suggest a common approach, its very much dependent on customer requirements.

Customers usually start off with 2 Edges, if there are throughput or specific requirements you can look at scaling horizontally or vertically.  But going straight to 8 Edge nodes unless properly discovered is overkill, as could 4 potentially be.

The question is... why are you trying to do this?  If you are..

[ShahabKhan]

I agree with Shashank. At the end of the day, it all depends on Customer's requirement & use-case. I too suggest Customer to start with 2 Edge Nodes with 4 path ECMP & then based on the utilization add more Edge Nodes to the cluster. 

[MrVmware9423]

Thank you for the asisstance.

Last question, is below diagram looks good if we need to setup 8 way ECMP with 8 Edge nodes, 4 Edge Node points to ToR1 VLAN300 and rest 4 points to ToR2 VLAN 400

[shank89 · Accepted solution]

There are multiple layers of ECMP,

• T0DR to SR (up to 8 active Edge nodes)
• T0SR to Physical (up to 8 paths / next hops)

How you chose to achieve this is up to your design.