Switch Upgrade Gone Horribly Awry
Posted on 2011-02-15
So my project last night was to replace two aging and ailing 3Com 10/100 network switches with new NetGear Gigabit Switches. The old switches were a 48-port and 24-port respectively. The new switches we purchased were NetGear GS748T. I THOUGHT the proceedure would be as easy as physically swapping the equipment and giving them enough time to sort out the tables to allow for traffic. I was mistaken however. After initial setup of the NetGear switches I decided to try and configure a LAG connection combining 4 of the ports on each of the switches in order to establish a 4 gigabit 'trunk' between the two devices to allow for increased bandwidth between the switches. I configured this through the web interface and then set about plugging in all 96 devices into the new switches. However, once powered up, I had next to no network connectivity and what was there, was intemittant at best. I even went so far as to reset the switches back to factory defaults in hope of establishing some sort of functionality. The whole objective in upgrading to gigabit across the board was to allow for some of our heavy bandwidth applications. After struggigling most of the night with this I was forced to swap back to the 3Com switches in order to have things somewhat functional for staff arriving in the morning. Swapped everything back and network speeds were back to what they were.
Does anyone have any idea what I've done wrong, or am I trying to use these NetGear switches in an environment they do not supoort (though I don't really see how).
If it adds any clarity, we have two file servers shared to the staff, that's it. My objective is simply to share the access to the two servers and our internet connection to the 60 ish staff computers and various printers and such. I separated devices based on ones that supported a gig connection on one switch and devices that are perhaps a little older and only support 100 base on the other switch. The two servers and the router were connected to the first swich will all the other 'power users'. If any more clarity as to what I've tried is necessary, I'll be happy to provide.
Any help is desperately appreciated as now I am under the gun to get these gig switches in place.