Forum Discussion
Wallace_Figueir
Nimbostratus
NimbostratusSIP Problems
Hi,
I have a big problem with SIP protocol across BIG-IP.
My environment is composed by 2 Asterisk Servers loading-balanced by BIG-IP with SNAT Automap enabled (because servers and phones stay on the same environment) .
The UDP profile and SIP Persistence is configured on Virtual Server. When i try to make a call, the traffic comes to servers across BIG-IP. The first problem is: when i make a call, the connection is opened by telephone and established with one of VoIP servers, but when if i force offline state on member, the connection stay active
If disable the SIP persistence, same problem occur.
Looking the SIP packet header, "Via" value is set with correct information (Server and client ip)
The second problem: Looking the tcpdump on Asterisk servers, the response ip of servers is the same ip of Virtual Server, if i disable this option (nat) the Asterisk access the phones directly. If i disable this option the comunication between Asterisk and phone not pass on BIG-IP
I need to make a rule with ability to manupulate the "Via" value on SIP Header to change the nat configuration on Asterisk servers, but the event SIP_REQUEST, SIP_RESPONSE doesn´t works with 9.3.1 TMOS.
hoolioCirrostratus
Hello,
For the first problem, can you enable per packet load balancing on the UDP profile by enabling LB datagram (Click here) and retest?
For the second question, you can use SIP::header (Click here) to modify SIP headers. What were the symptoms of the problem you were seeing?
Aaron
Wallace_FigueirHello Aaron,
The first problem has solved.
On second problem, the SIP events doesn´t work on TMOS 9.3.1 .- hoolioYou might be able to get the functionality in 9.3.x using an early access license. Else, you'd need to upgrade to 9.4+ to use the SIP commands. Maybe a DC admin can let you know whether they're still granting licenses.
Aaron - Your best bet is to upgrade due to all the other functionality and fixes included. If that's not possible, I can poke around here and see if we're still passing out EA licenses, as I can't recall the last time I saw one go out for this particularly. Let me know.
Colin
