ECMP Preferred Route

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ECMP Preferred Route

L5 Sessionator

Hi All,

 

Does anyone have the answer as to how the Palo Alto choses the "preferred route" when ECMP is configured?

 

0.png

 

 

As per the runtime stats, the referred route for all these routes is 172.16.8.226. (* flag) Both routes in each of the three destinations have been forwarded to the FIB as per the "e" flag.

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

L3 Networker

Hello,

 

I think that it depends of the load-balancing algorithm that you choose for ECMP routing.

If you use IP-Modulo (default option) you will always have same route as preferred route for a given source / destination couple.

 

Regards,

 

Laurent

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2 REPLIES 2

L3 Networker

Hello,

 

I think that it depends of the load-balancing algorithm that you choose for ECMP routing.

If you use IP-Modulo (default option) you will always have same route as preferred route for a given source / destination couple.

 

Regards,

 

Laurent

May I know, why there is a preferred path icon ("*") next to one path when ECMP is enabled? I thought when ECMP is enabled, it can go any one of the paths?

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