GTM virtual server query

Hi,

 

OK, let's take a look at the basis. In GTM you can have Physical objects (Datacenters, Links, Servers and Virtual Servers) and Logical objects (Virtual Servers -> (Services), Pools -> (A group of Virtual Servers), and Wide IPs (The name association with pools)). Remember that GTM it's a Intelligent and more advanced DNS Server.

 

The IP:Port address combination in a Virtual Server must be unique and also the Name of the pool. Also the Wide IP must be unique. You can configure alias inside the Wide IP configuration.

 

But this doesn't mean that you can't associate a specific physical resource of your network (for example a Web server listen on port 80) with any Pool or Wide IP. That's the granularity that GTM can offers you.

 

So, i don't know your specific business goals, but you can associate a specific Server with any Virtual Server, with any Pool and any Wide IP.

 

Here a little example of configuration via tmsh:

 

Create the Servers in every DC

 

tmsh create gtm server access_host addresses add { A.B.C.D } datacenter Paris

 

tmsh create gtm server access_host1 addresses add { E.F.G.H } datacenter New York

 

Modify the Virtual Servers

 

tmsh modify gtm server access_host virtual-servers add { vs_access { destination A.B.C.D:80 }}

 

tmsh modify gtm server access_host1 virtual-servers add { vs1_access { destination E.F.G.H:80 }}

 

Create the pools for the Wide IP association

 

tmsh create gtm pool access_pool monitor tcp members add { access_host:vs_access }

 

tmsh create gtm pool access_pool1 monitor tcp members add { access_host1:vs1_access }

 

Create the Wide IP

 

tmsh create gtm wideip access.test.com pools add { access_pool access_pool1 } ipv6-no-error-response enabled