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Re: Multiple NICS - Real Servers

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Multiple NICS - Real Servers
From: jsc3@xxxxxxxxxxxxx (John Cronin)
Date: Wed, 8 Aug 2001 13:25:39 -0400 (EDT)
> Nael Mohammad wrote:
> > 
> > That and the fact that each card requires it's own unique MAC address.
> 
> for channel bonding both NICS on the host have the same IP and MAC address.
> You need to split the cabling for the two lots of NICs, so you don't have 
> address collisions - you'll need two switches.

You either need multiple switches, or switches that understand and
are willing participants in the channel aggregation method being used.
Cisco makes switches that do Fast EtherChannel, and Intel makes adapters
that understand this protocol (but again, not currently using Linux).
Intel adapters also have their own channel aggregation scheme, and I
think the Intel switches could also facilitate this scheme, but Intel
is getting out of the switch business.  Unfortunately, none of the
advanced Intel NIC features are available using Linux (it would be
nice to have the hardware IPsec support on their newest adapters,
for example).

-- 
John Cronin
mailto: `echo NjsOc3@xxxxxxxxxxx | sed 's/[NOSPAM]//g'`


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