"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 06/27/2007
06:08:32 PM:

> Agreed - if you want to load balance across multiple interfaces, then use
Link Aggregation [on the AIX end] and bonding on the network switch end.
>
> Using a non-link aggregated interface and to simply have fail-over then
define one interface as primary and the other as backup.
>
> Mahesh
>

>From what I understand, Link Aggregation (802.3ad) is a
spec for automatically configuring the ethernet legs into
aggergates.  For AIX, it's default distritubion mode (what
it implements the hash against) is the destination IP
address.  In other words, it has the same quasi-load-balancing
as etherchannel.  If the switch is also hashing on the
destinitation IP address, then you will get little or no
inbound (to the tsm server) load balancing since all tsm nodes send to the
same
destination - the tsm server.  The only true load-balancing
distribution policy is round-robin, which I believe should NOT
be used with a switch - only servers connected back-to-back.

Rick








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