ACE20 Module - is it possible to capture probe traffic?

[Fernando Bello]

Hello all,

I am having a weird problem. I have an HTTPS probe that sometime fail, sometimes does not fail.

probe tcp TCP_443

  port 443

  interval 20

  passdetect interval 20

probe https TEST-HTTPS

  interval 20

  passdetect interval 20

  request method head url https://10.31.1.210/default.htm

  expect status 200 200

The probe that sometimes fails is the TEST-HTTPS. The TCP_443 probe works perfectly well.

The ACE is configured in bridge mode.

Is it possible to capture the PROBE traffic on the ACE side?

thanks in advance,

Fernando

[Jorge Bejarano]

Fernando,

This type of traffic is not captured by using the ACE's capture.

I would recommend to run a Wireshark capture on the servers themselves directly.

Thank you, hope this helps!

Jorge

[Fernando Bello]

I was hoping that there was a way to capture the probe traffic within the ACE.

Thanks anyway for your help, I will do the capture on the servers with wireshark.

Thanks!

Fernando

[Jorge Bejarano · Accepted solution]

Fernando,

It sounds good then.

Mark it if it was helpful.

Good luck!

Jorge

[Fernando Bello]

Jorge,

How can I verify in the capture if the HTTP server is giving the correct answer

to the ACE? (or the answer the ACE expects to mark the probe as SUCCESS)

thanks,

Fernando

[Jorge Bejarano]

ACE is going to try to access: https://10.31.1.210/default.htm and wait for a 200 OK.

Jorge

[Cesar Roque · Accepted solution]

Hi Fernando,

Just one observation, the probe should look like this:

probe https TEST-HTTPS

  interval 20

  passdetect interval 20

  request method head url /default.htm

  expect status 200 200

---------------------
Cesar R
ANS Team

[ajayku2]

Hi,

If it is not in production or if you dont have much load.

You can try playing with few of the debug option:

debug hm errors

debug hm events
debug hm info

The above will help you to identify the errors.

Also refer:

http://docwiki.cisco.com/wiki/Cisco_Application_Control_Engine_(ACE)_Troubleshooting_Guide_--_Troubleshooting_ACE_Health_Monitoring#Troubleshooting_an_HTTPS_Probe_Error

regards,

Ajay Kumar