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Forum Discussion

FFive's avatar
FFive
Icon for Altocumulus rankAltocumulus
May 03, 2022

Help me understand GTM Load Balancing Algorithm and how Topology Records and Topology Regions play i

We have two Topology Regions: Internal space (10.0.0.0/8) and External space (public facing IPs). The GTM is configured with two listeners, one internal-facing the other external-facing The GTM i...
application delivery
devops
PSFletchTheTek's avatar
PSFletchTheTek
Icon for Cumulonimbus rankCumulonimbus
May 03, 2022

Ok, so silly question - are you using GTM to host records for your web servers/services.
Or, DNS for your Clients/Servers?

My answer was for web servers, so once you have your wide-ip setup to the DNS name.
You setup a topology, so when the wide-ip gets a request from a certain IP it knows what to do with it.

So if from say a certain range or geo-ip region it can deside which IP's to respond with.
So the topology is for the incoming comms.
Where as the pool, is a list of servers/IP's which the GTM has avaiable to it to choose from when a request comes in.

Really the question is, when a request comes from one of those ranges what do you want to happen?

FFive's avatar
FFive
Icon for Altocumulus rankAltocumulus
May 03, 2022

Hi, Thank you again to continue engaging on this topic.

I am using the GTM to host DNS records for web servers/services/apps.

You helped me identify the issue. I have the wrong WIDE IP pool load balancing method as Round Robin instead of Topology. I feel embarrassed that I didn't notice this first. A lesson to look at the easiest possible resolution first instead of the more complicated ones.