>>>>> "Stephen" == Stephen Stocke <scstocke@gmail.com> writes:

> Greetings fellow toaster admins I hope someone can shed some light
> on the IP distribution function for lacp ifgrps.

You need to give more information on your setup, especially what kind
of switches you're using and how they're configured. 

> We have a four port, multi mode lacp ifgrp, a0a, using interfaces
> e2a-e2d. We observe SnapMirror traffic egressing port e2c.

So?  Why do you care?

> The XOR of the last two bits of the source and destination IPs are
> either x0 or x3 so I am expecting traffic to egress either the first
> or fourth port in the ifgrp.

> Assuming e2a is port 0, e2b is port 1, etc., I would expect traffic
> to egress either e2a (0x0) or e2d (0x3).

Share your config (cli output) so we can look at it.


> What am I missing? I can’t find any details about the actual hashing
> function for IP distribution or port member indexing in an ifgrp to
> confirm my assumptions.

> Both clusters are a single A250 HA pair running 9.15.1.

Are you seeing performance problems?  Are you seeing that your traffic
isn't being balanced across all your links? 

I guess I really don't understand the problem you're trying to solve,
unless oyu're just looking for info on why it works this way, which
might really be a Netapp only answer. 

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