We have a quite a number of Vigor 2820's used across multiple sites and are providing a UDP Video streaming service to each of these sites. We regularly have to power cycle four of them to get the UDP traffic flowing normally. Monitoring indicates that the UDP stream is passing through the router but very intermittently until the reboot, at which point traffic flow is increased and the streaming works as expected.
The latest firmware is installed but has made no difference to the routers in question.

Any help would be appreciated.