We recently upgraded a client's network with (2) 6248 switches. One in layer2 mode only, the other is the site's 'core' layer-3 routing switch. The 6224F is basically a concentration point for (10) 5448 and 5424 edge switches in remote dorms and offices and is connected to the 'core' 6248 via a 2Gbps 2-port fiber LAG.

We have a ticket in with Dell, and are currently waiting a second response to some additional information.

The 6200-series switches are all running the latest firmware (2.1.0.13) but are randomly rebooting. The Dell tech I spoke to told me that "perhaps a broadcast storm or something is causing the reboots." But the reboots are random and they are not at the same time. (power is good. Each is on a functioning UPS and in one case the 6248 is currently the only device in a APC 1400)

I connected the serial port of the 'core' 6248 switch to a server running minicom, increased the logging level and began logging to a file until the 6248 rebooted. At the same time, I had that server running tcpdump, capturing in promiscuous mode.

What I saw was that the serial port logged a stack trace at the time of reboobvt, and there was no broadcast storm, nor any significant broadcasts captured by tcpdump before the reboot.

Dell quickly (almost too quickly) shipped us a replacement for one of the 6248 switches, which is exhibiting the same behaviour as the original. The original is currently connected to a server only via serial cable and has not rebooted in over 40 hours, while the new one has already rebooted twice in 24 hours.

Long story short... Is anyone else seeing this issue or am I the only one dealing with this right now?

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Bill Arlofski
Reverse Polarity, LLC