GTM Pool Persistence with timer

Hi cory, thanks for the response.

We do have LTMs.

We have two sites DC and DR both are configured as Active - Active.

Network Setup

DC

• External users --> Internet --> Firewall --> GTM --> LTM --> App Servers

   

• Internal users --> MPLS --> Firewall --> GTM --> LTM --> App Servers

   

DR

• External users --> Internet --> Firewall --> GTM --> LTM --> App Servers

   

• Internal users --> MPLS --> Firewall --> GTM --> LTM --> App Servers

   

GTM loadbalancing method: Topology with persistence enabled

Topology:

• MPLS IP segments are grouped as PVT_LAN

   

• IPs not part of PVT_LAN grouped as PUBLIC

   

PVT_LAN users requests will hit GTM pool-1 PUBLIC users requests will hit GTM pool-2

Both the pool 1 and 2 have pool members from both sites (DC and DR).

Expected functionality is, GTM loadbalancing and site level persistence and LTM loadbalancing and session persistence should work for both PVT_LAN and PUBLIC.

As i already said, for internet users GTM loadbalancing and persistence, LTM loadbalancing and session persistence working fine. Loadbalancing is happening fine in terms of GTM as well as LTM.

Unfortunately we have 80% users are from PVT_LAN (MPLS) and their DNS server is very few.

So, DNS queries from these PVT_LAN are persisted to single site and load is hitting only one site till GTM DNS persistence timeout.

Is there any better way to rule out this loadbalancing issue, without compromising persistence.