Need some help: (Novice)
I have set up vlan1 to an IP address and default gateway and set ports 21 and 22 to router(trunked). These ports are uplinked to a HP Procurve.
When I plug in one port all works fine but when I plug in the 2nd the lights on all the switches flash more than Blackpool illuminations. Any ideas where I can go on this?