Yesterday I swapped over 20 cat 5 cables from a working Allied Telesyn 100MB switch to a new GB switch with new cat 6 cables. The old switch was working fine, we just wanted to upgrade.
Initially there was huge packet loss and lots of speed complaints. I resolved this by plugging the main 100MB/s internet feed back into the old switch (in its original port) then placed a jumper from the old switch to the new. This fixed the packet loss, but I want to retire the old switch completely.
What am I missing here? Does the internet feed have to have a special config set in the router for the port it's in? There does not seem to be a "standard" input port.