Forum Discussion
Charles_78879
Nimbostratus
NimbostratusGTM deployment help needed
Hi All,
An introduction for my case. We are running a couple of applications in the Main Site (A) hosted in a VMWare. Then we have another VM machine in our DR Site (B) to act as a failover is the main site goes down.
Due to the legacy setup of the application, clients access the application using IP address (A).
My questions will be:
1) How do i deploy GTM to be using IP address of (A) all the time, i read a few deployment guide that talks about Wide IP. But it relates to a FQDN, since my clients are connecting through IP address. How do i go about it?
2) we can purchase GTM as a module for Big-IP. so can i run both LTM and GTM on the same appliance? Currently my environment do not have any F5 products.
3) How many GTM do we need? i saw some deployment guide with only 1 GTM at either site. if that site goes down, does the whole thing still works?
Thanks in advance
3 Replies
- GTM only provides data center load balancing for FQDN based services.
For IP based services you could virtualize the IP address and proxy it over the WAN with LTM+WOM to site B when the servers in site A are unavailable, or you could use a dynamic routing protocol like BGP or OSPF to provide redundancy for the IP address that will send traffic to datacenter B if datacenter A is offline. 
Charles_78879May i know What is WOM?
the main problem will be users always accessing the physical IP. so if the physical server goes down, users are not expected to change their IP address to the DR IP..
They want ti transparent to them- WAN Optimization Module - you can build tunnels between BIGIPs with it.
If the server fails in datacenter A then you could talk to the server in datacenter B through a tunnel and the users would still use the same IP address. It doesn't help if the whole datacenter is off line.
