[Koha] SIP2 and 3M Self Checks

[Liz Rea]

We had this problem for a while, we finally tracked it down to a load  
balancing firewall that was causing the SIP server to be overloaded  
with unresolved connections. Since the firewall was using two  
different ISP's, there were two different source IP's, causing hung  
connections that eventually choked the server to death.

Once our site had all of the SIP connections coming from one of the  
IP's, the problem resolved. Before we discovered the cause of the  
problem, our vendor had a cron job set to restart the SIP server every  
X number of minutes (I can't remember what the interval was, but it  
did help).

I hope this info helps you out.

Liz Rea
NEKLS

On Nov 6, 2009, at 8:19 AM, Melanie Hedgespeth wrote:

> Does anyone utilize 3M self checks?
>
> We have random disconnects with the errors of either “Connection to  
> ACS Shutdown”  or “Send Expects Failed”.
>
> One self check had the send expects failed error for 2 days, then  
> magically connected.
> Now a different self check is having send expects failed.
>
> Over a weeks time frame every self check has 3 to 4 random  
> disconnects that can be rest and fixed and/or sometimes they are out  
> for a day or two.
>
> (We have talked to 3M and have worked with them also.)
>
> Thanks.
>
> Melanie Hedgespeth
> Tech Center Manager
> Salina Public Library
> 785.825.4624 Ext. 233
> melanie at salpublib.org
>
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>
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