I have figured this out. It looks like the 'ip firewall alg rtsp' was using this port. I just disabled this and was then able to set 'sip udp 7281'.
Jeremy Van Bortel
Looks like you beat me to it! Good job on figuring that out!
Good to see you using forums! This is Mark from your class last week.
Good question you asked.
UDP port range 7000-8000 is hard coded into the AOS and is used by "IGWRP" for the RTSP protocol which is used sometimes for media streaming.
You just need to turn it off by issuing the following command:
no ip firewall alg rtsp
Once you disable it, then you should be able to enter the sip udp 7281 command.
Hope that helps!
Have a good day!
Long shot here since this thread is nearly 2 years old but here goes.
I'm having the same problem as Jeremy but the port I am trying to use is 11060. I can't for the life of me figure out what is using this port or a range that includes this port. I would appreciate any guidance y'all can offer.