Difference between BIGIP-LTM and BIG-IP GTM

LTM load balances servers and also does caching, compression, persistence, etc. GTM load balances data centers.

 

 

In a typical deployment, a customer will have 2 data centers, each with GTM and LTM devices. For GTM to work properly, customers delegate DNS resolution to GTM.

 

 

So, a user could type into their browser "www.example.com." GTM would see the DNS request and see which data center was performing best. If it was data center 1, GTM would return the IP address from the LTM in data center 1. Then, the user would connect to that IP and LTM would load balance the user's request to a server.