Forum Discussion
NimbostratusBalancing SMPP traffic based on recipient address
Dear Kazeem,
Honestly, I totally forgot the SMPP spec as my last encounter with SMPP is on 2013. So, I can't help much further about the system ID.
I am more interested in the architecture. I am not sure why there are multiple firewalls with F5 in between. Anyhow, I believe the iRule should be placed in the 3rd VIP instead of the 1st. It should be plain TCP LB in 1st VIP and 2nd VIP. The 3rd VIP should be the one talking SMPP to the SMPP server and doing the MBLB.
Cheers,
-joko
TCP load balancing means that F5 conduct load-balancing per TCP connection. Once the TCP connection is established to the server-side, the packet from the client will always use that connection to F5 and landed in the same server all the time until the connection is closed. An example would be a VS with standard type and TCP protocol selected, that is TCP LB. It works well for HTTP because short-lived but it does not work well with long-lived connection such as SMPP or DIAMETER. That is the reason on message-based load balancing (MBLB).
