Load balancing in Foundry Network

[Shivkumar]

Dear Sirs,

We have network foundry geographic load balancers. We are thinking to route the request in a round robin fashion to 3 servers. Can we provide ip-weight of 0 against each servers ?

I mean is the ip-weight of 0 [ zero ] allowed or will work correctly ?

Thanks,
Shiv

[Chan 007]

Shiv,

I happened to go through this link some times back. This helps a bit.

http://www.foundrynet.com/services/documentation/sichassis/gslb.html

Also why not use a CISCO load balancer for any applications servers.

007

[John Payne_2 · Accepted solution]

For the most part, we set the weight at 0 (zero), and use othehr methods, like least connections. (On Foundry ServerIron.) We have 1 webserver mix that we actually do the weights.

Hope it helps

John

[Shivkumar]

Hi John, Do you mean to say that in your environment have you already assigned ip weight of 0 to servers in load balancer config ? Actually in our environment we have assigned ip weight of 0 to 3 servers in the load balancer config to send the traffic in round robin fashion. We analyzed the counter readings of GSLB and noticed that percentage of load is not equally distribrited. We saw that load balancer prefers a particular load balancers each time.

Appreciate if you or someone elso help in understanding this.

Thanks,
Shiv

[Steven E. Protter]

Shalom Shiv,

This will deal with outages? Round Robin techniques don't work very well if they don't stop sending traffic to a server or network that is offline.

Is there an interface that lets you change load balancing on the fly?

There are appliances that do this kind of job as well.

SEP

[John Payne_2]

Shiv,

For the most part all our web servers have weight 0.

Bagley xxx.xxx.xxx.xxx 1000000 0 1 No No
Rodgers xxx.xxx.xxx.xxx 1000000 0 1 No No

(The weight being the 4th column)

The only time we use the ip-weight is when we use un-equally yoked machines in the same server mix. ie: an rp3440 in a mix with rp2470's will end up with weights so that the rp3440 will get twice as much as a single rp2470.

We found round robin didn't do all that great a job balancing, the least connections algorithm did a little bit better.

Hope it helps

John