CLustering and Load balancing in asterisk

I would like to ask is there are any documentation on how to cluster the asterisk and load balancing as well. Thanks

Regards,
newbie_aste

The wiki is your friend

http://www.voip-info.org/wiki/view/Asterisk+High+Availability+Solutions

Thanks for that thing.It’s really a big help. Just wanted to ask if I could use the IAX for load balnacing?I have to asterisk server, Can I use the other server for failover?Do you have any doc on this. Thanks

Regards,
newbie_aste