Forum Discussion
CirrusIssue on connection limit
Hi,
we are having an issue with a VS on F5 LTM: when a client simulates a call to a service via the VS on F5 with simultaneous connections, the connections are blocked at a number of 28, whatever the total number of calls (50, 100, 1000...). The servers see only those 28 calls arriving. Up to 28 or less, all the calls arrive.
If the service is called directly on the servers it responds correctly to all the calls. On the VS we have not set any connection limit; do you know if there is any other parameter to check?
Thanks to all
7 Replies
f51Cumulonimbus
Hi romolo82
Are there any iRules, connection rate limiting, or SYN flood protection features enabled ? What are the profiles are you using ? Ex: OneConnect
Did you check logs ? Are you seeing anything in the logs as "01010251:3: Virtual /Common/vs_example exceeded configured rate limit"
romolo82Hi... definitely not. It's a new service with no iRules, no connection rate limit (setted at 0) and I think no SYN flood protection (it's a standard configuration, non customization). No OneConnect. Applied profiles are fastl4 standard and http profile standard. VS is on 61616 port. No connection exceeded rate limt logs.
I have really no ideas :-(
- f51
Are you using SNAT automap ? If not, try enabling SNAT automap on the VS and retest.
And also check the connection count per-TMM using the following articleK09047561: Viewing the current number of TMM connections from the BIG-IP command line
If this not helps, I would recommend you to open a support ticket to check further.
