Monitoring Syn cookie threshold in real time

[BK1]

Hi,

We facing syn cookie threshold crossing its limit and we can logs under ltm files. Now the counts gets normal automatically once traffic is normal. I am looking for something where I can monitor real time syn cookie count on the specific virtual server.

Can I achieve it? Is irule will help here?

[crodriguez]

Viewing virtual server statistics from TMSH should give you the information you are looking for: tmsh show ltm virtual <virtual-server-name> detail shows the following SYN Cookie statistics. (Note: This output is from a virtual server that does not have SYN Cookies activated at the moment, hence the 0 values.)

SYN Cookies
  Status                         not-activated
  Hardware SYN Cookie Instances              0
  Software SYN Cookie Instances              0
  Current SYN Cache                          0
  SYN Cache Overflow                         0
  Total Software                             0
  Total Software Accepted                    0
  Total Software Rejected                    0
  Total Hardware                             0
  Total Hardware Accepted                    0

[Parul_Kaushik]

How we can monitor the syn cache counters

[Angelo_V]

SNMP

https://support.f5.com/csp/article/K00560557