When MAPI acceleration (exchange/outlook) is Active in our WAAS environment, the remote site users randomly lose connection to the Exchange server (on hub site), if I disable the MAPI acceleration everything works ok. so right now we are running with MAPI accelearation Disabled
I can see that we often get max_conn_reject The TFO accelerator is overloaded (connection limit), we haven't done any adjustments to the default configuration.
The environment is one Hubsite with two remote sites.
[Hub Site] 34mbit
[Remote Site1] 4 mbit
[Remote Site2] 4mbit
So the question is how to solve this?!
I had a feeling that you might have alot of computer remotely.
One of the main factors in sizing a WAAS soluiton is to keep in mind the number of TCP connections that a single WAE can optimize.
We limit the device on optimized TCP connections.After you hit the limit the device will go into the overload state that you mentioned.
274 - 200 connections
474 - 400 connections.
Typically from a sizing a single workstation would be sized from 7-10 TCP connections.
The 2nd factor in sizing is bandwidth - WAAS doesn't limit bandwidth but this is recommended for the CPU throughput.
274 - 2 Megs
474 - 4 Megs
The 3rd factor is redundancy,. HA, etc.
remember if this answrs your questions, please mark as answered and with a 5.