ACE4710 HTTP probe

[sudheer]

Hi,

We are facing a problem with the HTTP probe configuration on the ACE4710 appliance, below is the configuration we are using;

probe http Portal-HTTP-Probe
   interval 5
   passdetect interval 2
   passdetect count 2
   receive 20
   request method get url /portal/

  expect status 0 999
   expect regex <word>   <-- tried with multiple word option available in the page

We are trying to probe a particular word from the page content to confirm that the web page is functioning properly, but in our case the probe is failing always. We tried with and without status code configuration and also with multiple words from the web page. The appliance is running with Version A4(2.0).

Pls share if anyone has any idea...

Thanks in advance

Rgds

Sudheer

[ciscocsoc]

Hi,

One  potential problem is that the server needs to send a  Content-Length header. If this header is not sent then the ACE will not check for the regex. A packet packet capture from the server would  show whether this is the case.

Hope that helps

Cathy

[sudheer]

Hi Cathy,

Thanks for the response..

Infact we already checked this and found that the server is returning with content length header..

Is there any specific requirement that the word should be from a specific portion of a page?

Rgds

Sudheer

[litrenta]

what do you see when you do

show probe Portal-HTTP-Probe detail

please post

[vpurbiya]

Check this

http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/vA2_3_0/configuration/slb/guide/probe.html#wp1031398

if you are still not able to get it working, take a packet capture and see what status you are getting as a response, or that are you even getting it ?

Since probe are sent from the control plane, you wont be able to capture it on the ACE.

So you may need to capture the info on switch span session.