I get a empty blue window when I try to open "port to VLAN"We have upgraded the software but it dosn't help.

I have connected a cisco switch ( SG 200-08) to a HP switch, everythings works fine when hade have the HP port as untagged, but I can't get out when I tag the HP port.Maybe this is a HP problem but we can tag other ports on it to other switches.Is it...

I new on this and will put a router to DR , how do I know if it already is DR, what does DR stands for?Is DR a backbonerouter?What is the command if it isn't a DR?(I'm using packet tracer)Answer like you should answer a 5 year old ;-), I'm new and En...