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Link aggregation with hacmp ?


 
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Operating Systems AIX Link aggregation with hacmp ?
# 1  
Old 08-20-2009
Link aggregation with hacmp ?

Hi,

I need to setup a hacmp cluster (my first one, we usually use VCS on AIX), but I require more network bandwith than a normal gigabit etherchannel setup can provide, so I am thinking about using linkaggregation - 2 active adapters to one switch and a single backup adapter to another switch ... would this work or am I thinking wrong somewhere ?

Kind regards
zxmaus
# 2  
Old 08-20-2009
i don't know AIX but on solaris this can be done. be aware that the switch must support link aggregation!
# 3  
Old 08-20-2009
AFAIK Etherchannel can be used for failover as well as link aggregation - if the switch supports it, as DukeNuke2 has said already. I haven't tried to use that in a HA-scenario, though.

I hope this helps.

bakunin
# 4  
Old 08-21-2009
DukeNuke, Bakunin,

many thanks - I know our switches do support it ... we're running our vio servers with link aggregation - I just wanted to know if hacmp can cope with it, too. Since it is still presented as one adapter, I would think so ?

Rgds
zxmaus
# 5  
Old 08-21-2009
Quote:
Originally Posted by zxmaus
Hi,

I need to setup a hacmp cluster [...] I am thinking about using linkaggregation - 2 active adapters to one switch and a single backup adapter to another switch ... would this work[...]
This is supported by HACMP. However, I'd create two Etherchannels LA (of 2+ ports) and use one as backup because in your setup you lose half of the network bandwith in case of an adapter switch or switch failure.

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