SIP Monitor question

Hello

 

 

I have problem with SIP health check.

 

 

 

F5 send a SIP OPTIONS request on UDP port 5060 to the SIP server. The SIP server reply with SIP/2.0 200 OK but include SDP in the answer and some how F5 does not like the answer and the server is mark down . Below is the output from monitor loggin

 

 

 

 

 

SIP: Sending:

 

'OPTIONS sip:10.105.111.20:5060 SIP/2.0

 

From: sip:anonymous@autd00f5-cc02.vodafone.com.au;tag=5c0c516e

 

Call-ID: 000021774f260e15@autd00f5-cc02.vodafone.com.au

 

CSeq: 1327894037 OPTIONS

 

Via: SIP/2.0/UDP autd00f5-cc02.vodafone.com.au:5060;branch=z9hG4bK263386c0

 

Max-Forwards: 1

 

To: sip:10.105.111.20

 

Content-Length: 0

 

'

 

--

 

 

 

Received:

 

 

 

SIP/2.0 200 OK

 

Content-Length:133

 

From:sip:anonymous@autd00f5-cc02.vodafone.com.au;tag=5c0c516e

 

To:;tag=ah_2C59067U1.UBB

 

Via:SIP/2.0/UDP autd00f5-cc02.vodafone.com.au:5060;branch=z9hG4bK263386c0

 

Call-ID:000021774f260e15@autd00f5-cc02.vodafone.com.au

 

CSeq:1327894037 OPTIONS

 

Allow:ACK,BYE,CANCEL,INFO,INVITE,NOTIFY,OPTIONS,PRACK,PUBLISH,REFER,SUBSCRIBE,UPDATE

 

Content-Type:application/sdp

 

Content-Disposition:session;handling=required

 

 

 

v=0

 

o=- 0 0 IN IP4 0.0.0.0

 

s=-

 

c=IN IP4 0.0.0.0

 

t=0 0

 

m=audio 0 RTP/AVP 18

 

b=AS:8

 

a=rtpmap:18 G729/8000

 

a=fmtp:18 annexb=no

 

 

 

 

 

Don't recognize this as our reply...

 

8567: down

 

 

 

 

 

 

 

 

 

Any suggestions what can be wrong

 

 

 

Ignat