[j-nsp] per-flow load balancing hash and ICMP traffic

Mark Miklic mmiklic at gmail.com
Thu Dec 7 17:24:06 EST 2006


Actually,

it is enough if I exclude source-port from the hash. This is even more
confusing... I thought mtr had nothing to do with layer-4 source ports and
such, being ICMP. Is perhaps the sequence number treated as the source port?
Any ideas?

Thanks,
Mark


2006/12/7, Mark Miklic <mmiklic at gmail.com>:
>
> Anyone knows how ICMP is being treated when layer-4 hash option (any of
> them) is being turned on?
>
> I was doing some tests today, and the only way I could ensure a consistent
> path for MTR through the per-flow lb-ed network was to exclude layer-4
> parameter hashing completely.
>
> The only thing that comes to my mind is that Juniper introduces random
> values if there is no layer-4 information in the datagram...Is there any
> option to bypass this, or perhaps I am barking at the wrong tree?
>
> Thanks,
> Mark
>


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