[ale] Load Balancing Across Multiple Interfaces

Brian MacLeod bmacleod at guc.usg.edu
Fri Apr 23 09:30:08 EDT 2004


Kevin,

Bonded interfaces (link aggregation, channel bonding, and Etherchannel in Cisco lingo) is what you want, but the biggest issue with that is that the device your NICs connect to has to support it, and then be configured (from what I understand from our network tech, relatively easy on Cisco).

>From the linux side, see:
/usr/src/linux-2.4/Documentation/networking/bonding.txt

It can be a little weird to get set up, since once activated, your two (or more) interfaces actually respond with the same MAC address (so if you're using DHCP for the IP addresses, make sure you know which MAC is used).  But this works very nicely on our file server here at the Center.

---
Brian MacLeod
Computer Services Specialist III
Gwinnett University Center
Technology Services


> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On 
> Behalf Of Kevin O'Neill Stoll
> Sent: Thursday, April 22, 2004 5:10 PM
> To: ALE
> Subject: [ale] Load Balancing Across Multiple Interfaces
> 
> Hey all,
> 
> I have been googling for information on configuring two 
> interfaces to respond to the same ip address in order to 
> share the load of requests and possibly provide some fail-over.
> 
> I have found a lot of information on multiple ip's per nic 
> but not multiple nics per ip.
> 
> Could someone point me in the right direction?
> 
> Thanks
> 
> =====
> Kevin Stoll
> http://kevinstoll.com/
> 
> OpenSource Software...FREE!
> Angering Bill Gates...priceless.
> ============================================================
> 
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