Our business just bought four SA-540-K9 routers which I believe claimed to be manufactured in Dec 2009. And at first everything seem to come up roses. However after about a week I got a call in the early morning that internet access was down on one of our connections. Then suddenly came back up. When I went to check the router its system uptime was less than 13 minutes, so obviously it rebooted. I then received another call today that a second router did the same thing.
Now we are running the latest firmware (Jan 2010 1.1.21) and I did read the known problems in the release notes and made sure items such as "UPnP" were not in use or enabled. Also please note that we do not have licenses for the IPS function and are NOT running them in trials (we are not running IPS at all).
The routers have their DHCP server functions disabled and they just performing NAT functions. No special Queuing or managment functions have been enabled at this time. SNMP is off as is Bonjour and CDP.
What else can we look at? We have seen routers that reboot themselves with previous products (such as the Linksys RV016s) and just had to reboot the routers every 5 days to control when that break down occured. Our more recent routers were Netgear FVX-538 models and they never had any issues. We have since just dropped in new SA-540-K9 routers right into the setup where our Netgears had been.
Any suggestions on what it turn off or check?
Also just as a note we have not been experiencing any problems with them while they are on in any way for both Data and Voice traffic. So these reboots seem to be the only symptom I have to work with.
Any advice would be much appreciated.