[j-nsp] QFX5100 issues with IPv6 hashing

[Karsten Thomann]

Hi,

not tested, but have you tried to configure under enhanced-hash-key the inet6 hashing like 
documented here?
http://www.juniper.net/documentation/en_US/junos13.2/topics/reference/configuration-statement/enhanced-hash-key-edit-forwarding-options-ex-series.html

Kind regards
Karsten

Am Freitag, 17. April 2015, 17:26:10 schrieb Anton Yurchenko:
> Hi All,
> 
> I am seeing issues with QFX5100, hashing of IPv6 traffic over ECMP paths
> is very bad.
> In my case I have an ECMP over 3x40Gig links, and sending 180x10Mbit
> UDPv6 flows over them. First 40G gets ~300mbit, second ~600 and third ~900.
> IPv4 hashing is fine ~5% variance in traffic levels.
> 
> I have enabled hashing on L3/L4 and layer2-payload but no avail.
> 
> It seems that protocol/ports are not taken into account at all. If I
> start traffic from just one IP with 30 flows, they will all end up on a
> single link.
> 
> Seeing this on 13.2X51-D35.3 and 14.1X53-D25.2 releases.
> 
> Here is my hashing config:
> 
> load-balance {
>      indexed-load-balance;
> }
> hash-key {
>      family inet {
>          layer-3;
>          layer-4;
>      }
> }
> enhanced-hash-key {
>      hash-mode {
>          layer2-payload;
>      }
> }
> 
> Wondering if anybody have seen something similar or have seen it working
> properly.
> 
> Thanks!
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