I want to know which load balancer cisco providing to clients. Is there is any documents about cisco load balancer, network design where load balancer is used,
Cisco ceased sales of its ACE load balancer appliance in September 2012. This device was used in the same context as an F5, which pools servers and balances incoming client connections between them.
If you are talking about balancing of outbound network connections then this is still activily supported in IOS.