Multiple IP addresses showing for GTM/LTM member in data centre config

Yes we have this enabled.

Try disabling it for the GTM servers and see if that helps.

I'll give it a try, but won't disabling this stop any new virtual servers set up on the LTMs showing up in the GTMs though?

If it's enabled on the GTM servers, just disable it for those. Don't disable on the LTMs if you need the discovery there.

I've disabled the GTMs as suggested and removed the second address from the GTMs, however I still have two ip addresses in the server list for the two DMZ LTM servers (there is the iquery interface and the internet facing interface), I need to get the internet facing interface out of this list but if I edit the server and remove it then it automatically comes back about 30 secs later.

Are your DMZ LTMs setup as an active/standby pair? If so, are they configured as a BIG-IP System (Redundant) in the GTM server config?

No they are standalone units in seperate data centres.We have one GTM, one DMZ LTM and one internal LTM at each DC.

So the only issue remaining is that in the GTM server list, the DMZ LTM shows up with two IP addresses?

yes and there are the 'Connection in progress to x.x.x.x' entries in the log file for the 2nd (RIPE) address for the DMZ LTMs. It already connects to the LTMs using the first IP and our firewalls wont allow connections across the internet using the RIPE ones.

This may be occurring because GTM at site A is trying to connect to the DMZ LTM at site B and can't connect to its private address. Can you verify if this communication is working?