load balancing problems in DNS

[Bruce Embrey]

Dave,

All 4 nics have their own ip address and I have the ip
address bound to the mac address for each nic.

Bruce


On Tue, 18 Feb 2003 12:49:43 -0500
 "David Botham" <dns at botham.net> wrote:
> 
> 
> > -----Original Message-----
> > From: bind-users-bounce at isc.org
> [mailto:bind-users-bounce at isc.org] On
> > Behalf Of Bruce Embrey
> > Sent: Tuesday, February 18, 2003 12:07 PM
> > To: bind-users at isc.org
> > Subject: load balancing problems in DNS
> > 
> > 
> > I am running bind 9.2.1-9 under RedHat 8.0 and have
> > recently setup a slave DNS with 4 nic cards. I have 2
> > subnets which I have 2 cards in each and the dns entry
> for
> > this box is in round robin fashion. I have encountered
> a
> > problem in that the arp table on my router is having
> the
> > mac address from 1 nic on the subnet being overwritten
> by
> > the other.
> 
> Do both of the NIC's in the same subnet have the same IP
> address?  If
> so, then you could expect this behavior.  If you want NIC
> level
> redundancy, then, find a driver for the nic that will
> accomplish NIC
> fail-over.  You should have only 1 NIC active in a subnet
> at the same
> time with the same IP address.
> 
> 
> > 
> > Is it best just to reduce to 1 nic in each subnet or am
> I
> > missing a configuration setup? I selected the round
> robin
> > to provide DNS load balancing. Is there a better way of
> > accomplishing this?
> 
> Yes.  Load balancing with DNS is not a great idea.  Use a
> load balancing
> device such as Radware, Foundry, F5 BigIP, etc...
> 
> 
> Dave...
> 
> 
> > 
> > Bruce
> > 
> > Bruce Edward Embrey : VMS Systems Manager
> > Campus Email Admin : UNIX / Linux Administrator
> > Hood College : embrey at hood.edu : Phone (301)696-3927
> 

Bruce Edward Embrey : VMS Systems Manager
Campus Email Admin : UNIX / Linux Administrator
Hood College : embrey at hood.edu : Phone (301)696-3927