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Improving ECMP (CEF) load balancing on ASR9K

from88
Level 4
Level 4

Hello,

Seems my router don't do load balancing correctly. I have a lot of traffic which goes from the two different source addresses but to same destination with same source and destination port numbers, in other words im talking about IPSEC traffic.

i have two tunnels and traffic from them are going (according cef) to the same interface.

"show cef exact-route ip-X1 ip-X3" and "show cef exact-route ip-X2 ip-X3" show the same interface. I will repeat myself - the destination IP is the same, but the source IP is different.

I found a intereseting command:

"cef load-balancing algorithm adjust x"

but as i saw it depends on your line cards (typhoon or trident) I dont know wich is mine.

-----------------------------------------------------------------------------
0/RSP0/CPU0 ASR9001-RP(Active) IOS XR RUN PWR,NSHUT,MON
0/0/CPU0 ASR9001-LC IOS XR RUN PWR,NSHUT,MON
0/0/0 A9K-MPA-4X10GE OK PWR,NSHUT,MON
0/0/1 A9K-MPA-2X10GE OK PWR,NSHUT,MON

 

Maybe you can recommend something - do that command could improve load balancing ? Which number to user ? Do it will impact traffic? Thanks.

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