load sharing help

Elliot S. Metsger emetsger at cyb.net
Fri Nov 12 22:59:43 UTC 1999

Albeit a more expensive solution, check out Foundry Networks line of switches
(BigIron for starters) http://www.foundrynetworks.com.  They provide layer
2/3/4 switching and redundancy.  I've heard that the Big/IP machines have had
issues when they fail over to a backup unit in a redundant setup.  Anyone ever
experience this?


Adrian Goins wrote:

> having multiple IPs under one hostname is not load sharing.  this is called
> 'round-robin' and causes BIND to send all IPs back to the client.  the
> client is then served by whomever answers it first.  this is, in practice a
> bad way to do things, as one of your servers could still have increased
> load.
> Cisco Local Director (which we have now) is somewhat better - it spreads the
> distributed load across multiple IPs in a slightly more intelligent fashion.
> However, there is a flaw which we discovered last night in the Local
> Director where it is incapable of handling 10BT/Full Duplex, even if set to
> do so.
> Look at the F5 BigIP product, or their 3DNS product.  BigIP does load
> balancing between local IPs, and 3DNS does load balancing between geographic
> locations using a modified version of BIND.
> > -----Original Message-----
> > From: Timothy Wolters [SMTP:twolters5 at cncdsl.com]
> > Sent: Thursday, November 11, 1999 11:37 PM
> > To:   comp-protocols-dns-bind at uunet.uu.net
> > Subject:      load sharing help
> >
> > If I have load sharing among ip addresses set up in BIND, is it able to
> > detect when a server goes off line and remove this address from the
> > rotation?  If not is there some way to set this up, or should I just bite
> > the bullet and buy Cisco Local Director?
> >
> > thanks,
> >
> > Tim Wolters
> > ccplanet.com
> > mailto:tim.wolters at ccplanet.com
> >
> >
> >

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