Hi,
We have TMG with NLB on 2 nodes for connecting our DC network and branch offices/departments connected via network cloud or point-to-point links. Refer below network topo.
With TMG and NLB integrated on unicast mode, it is mis-behaving by dropping the packets intermittently passing thru them.
NLB is configured thru tmg console with no advanced config. Simply configured by enabling LB on network (Internal and Branch) and giving a VIP to it.
NLB is enabled in both internal and branch networks.
Branch network is a newly created network comprising of all our branch network IDs.
Test was conducted by pinging from the mgmt station to Layer-3 Switch (Src-172.16.10.11, Dst-192.168.1.1). Ping was intermittently getting dropped with request timed out messages. If i bring down any 1 node, there is no drop/mis-behaving. Hence I suppose that I need to do something with my config (precisely NLB).
Help me to analyse and troubleshoot the issue.
Thanks - DJ