I installed a 4900 1000BaseT ethernet switch over the weekend, there are 3 4400 switches with gigabit uplink modules connected to it's ports.
It worked fine at first, but after 5 minutes or so, the packet status LEDs for the connected ports stopped flickering and stayed on constantly. At this point the switch stopped working.
When the unit was power cycled it fails the POST test - the power LED is yellow, the only other LEDs on are UNIT LEDs No.s 1, 3 and 4 (the switch is not in a stack).
OK, so I contact 3COM and their answer is to send me a replacement. It arrived yesterday, I put in in last night and guess what.... the SAME THING happened.
Am I just doing something wrong? could it be one of the 1000BaseT modules in the 4400's that's causing the problem? The switches are in a proper rack, with cooling fans etc.
Please can somebody give me some advice before I throw these things out of the window.
Thanks.
It worked fine at first, but after 5 minutes or so, the packet status LEDs for the connected ports stopped flickering and stayed on constantly. At this point the switch stopped working.
When the unit was power cycled it fails the POST test - the power LED is yellow, the only other LEDs on are UNIT LEDs No.s 1, 3 and 4 (the switch is not in a stack).
OK, so I contact 3COM and their answer is to send me a replacement. It arrived yesterday, I put in in last night and guess what.... the SAME THING happened.
Am I just doing something wrong? could it be one of the 1000BaseT modules in the 4400's that's causing the problem? The switches are in a proper rack, with cooling fans etc.
Please can somebody give me some advice before I throw these things out of the window.
Thanks.
