Forum Discussion
AltostratusRound Robin Load Balancing Working.
Hello Friends,
Recently we have experienced issue with a Virtual Server- LTM . We have total 03 members in pool and using round robin load balancing for distribution. All of sudden end users started reporting that application is not working from some locations and while checking the traffic statistics we observed that Out of three pool members approx 15 times more connections are there on single pool member as compare to other 02. This indicates point whether round robin is working fine or not. How to ensure the same.
While checking on Devcentral only, i found (some logs related to connection verification on pool member with round robin showing below) some similar issue has been discussed but not able to find what was the solution and root cause.
--Connection 1--> | | --Connection 1--> TMM0 --> 10.0.0.1:80 --Connection 2--> |-> BIG-IP Virtual Server ->| --Connection 2--> TMM1 --> 10.0.0.1:80 --Connection 3--> | | --Connection 3--> TMM2 --> 10.0.0.1:80 --Connection 4--> | | --Connection 4--> TMM3 --> 10.0.0.1:80
Please advise for the step wise investigation which may not have any -ve impact on production segment.
Rgds
RaghavendraSY_7Cumulonimbus
Please let me know what type of persistence is configured for your application?
- EIT_Network
Persistence is NONE
RaghavendraSYPlease let me know what type of persistence is configured for your application?
- EIT_Network
Persistence is NONE
jaikumar_f5Noctilucent
Hi EIT,
You have a contradicting statement -
, load balancing could be the least possible cause for this.application is not working from some locationsBut w.r.t your concern why there is a difference in amount of traffic, its because of CMP - here's the article.
So in simple terms - depending upon your tmm instances you have - each tmm will process load balancing separately, which may why you have seen this for an instant.
But the overall behavior over a period of time would show you almost proper load balancing. Hope this clarifies.