[nsp] High-availabity GigE connection to two switches

[Even Glemmestad]

Rubens,

What kind of network cards and OS are we talking here? I've used many
different vendors for LB from servers, and they all have their own
approach. Many LB filter drivers support LACP, FEC/GEC, SLB ("Smart"
Load Balancing, basically ARP round-robin), Fail-Over. Some use probe
packets, others don't. Let me know what you have to work with..

// Even G

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Rubens Kuhl Jr.
Sent: 1. juni 2004 22:47
To: Tony Li
Cc: cisco-nsp at puck.nether.net
Subject: Re: [nsp] High-availabity GigE connection to two switches


> >> Any suggestions on how to provide high-availability to a server
that
> >> has two network cards, each one connected to a different switch ?
> >> Etherchannel doesn't seem to apply here, unfortunately. (Switch is
> >> either a Cat4K or a Cat6k)
>
>
> My preference would be to take the obvious approach and make them two
> separate
> subnets.  But then I'm weird...

Making them two separate subnets would transfer to the application
(operating system included) the fail-over role... this will fit ok into
load-balanced applications, but it will not address communications
between
machines on the same segments.



Rubens

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