I noticed the network traffic lights between my Sipura SPA-3000 and my Asterisk box were flashing continuously, as well as the network light on the back of the SPA-3000. Obviously a lot of traffic was being generated between the server and the Sipura device.
11:15:18.943238 IP (tos 0x68, ttl 64, id 2525, offset 0, flags [DF], proto 17, length: 200) 192.168.1.20.18498 > 192.168.1.30.16436: UDP, length 172
11:15:18.944106 IP (tos 0x0, ttl 250, id 26101, offset 0, flags [none], proto 1, length: 56) 192.168.1.30 > 192.168.1.20: icmp 36: 192.168.1.30 udp port 16436 unreachable
192.168.1.30 is the Sipura, 192.168.1.20 is the Asterisk server
This message is being generated every 0.02 seconds which is a continuous flow of messages back and forth between these devices.
The server and the Sipura are connected through a Linksys WRT54G. I never access any of these devices over the internet as this is strictly a local VOIP setup.
Everything is working fine, but the continuous traffic between the server and the Sipura is very disconcerting. Seeing those lights flashing all the time is distracting.
How can I stop this mindless traffic?