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ok, i know what i did wrong i have to do switchport mode access first, then i can use all the switchport commands also, the mac-address-table is cleared thanks

i tried switchport port-security command, i got a rejection: command rejected:not eligible for secure port. also, i tried clear port-security dynamic inter fa0/1, and nothing happened, what is supposed to happen? all dynamic mac addresses will be cleared? by the way, clear port-security dynamic...

i have a 2950-12 cisco switch, and i am trying to use switchport port-security command to secure my little lan. my switch port fa0/1 connects to a hub,and there are 3 computers connect to the hub, and the hub connects to a router which provides internet access. i want to assign a static mac...

I created a windows xp backup file,but i am using windows 7 now. is it possible to restore xp bak in using windows 7? thanks in advance

I learned from one of my Cisco courses that there are two types of broadcasts, one is directed broadcast and one is limited broadcast. examples: directed broadcast: 172.16.0.255 limited broadcast: 255.255.255.255 since, by default, router does not forward any broadcast frames, what is the...

thanks glenn i followed your advice now, i will wait and see what will happen after 3-4 hours

Yesterday, i upgraded my xp to service pack 2, later i found out after running every 3-4 hours xp automatically restarts. the restart is just like a normal restart, not just suddently goes to black screen and restarts. i scanned the system, and no virus was found. this really is bugging me...