Kbase P187952: WebClient connection slower when using network load balancer hardware.
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
5/18/2011 |
|
Status: Unverified
SYMPTOM(s):
WebClient connection slower when using network load balancer hardware.
Load Balancer set to round robin connections between two AIA systems.
Initial connection made to first AIA system but following communication passed to second AIA system by network load balancer which fails.
FACT(s) (Environment):
All Supported Operating Systems
Progress 9.x
OpenEdge 10.x
CAUSE:
During the initial connection by the client to the primary AIA or WSA a session context is being created.
The secondary AIA or WSA system does not know of the existing session on the first AIA or WSA system and thererfore rejects the client's attempt to continue its session communication.
When the secondary AIA or WSA system rejects the connection the client tries again and this time connects to the primary AIA or WSA system which has an already established session context waiting.
The time for the connection to the secondary AIA or WSA system and rejection and reconnection to the primary AIA or WSA system is the delay observed.
FIX:
The AIA and WSA were not designed to operate behind a network load balancer and will not work when configured this way.