If its say a 2950 layer 2 switch, you would assign an IP address to enable remote access via telnet.This IP address isn't being assigned to a physical interface, its assigned to a logical interface Vlan 1(i.e. no physical port is attached to vlan 1). Vlan 1 is what is known as the management vlan.
Hope that helps, if your taking CCNA I would read up on this area :-)
If you want to have a routed uplink to/from another L3 switch or a router, that's a good way to do it. It's simpler than creating a vlan and putting the port into it. You could route a layer 2 switch with it also. It simply gives you a routed link to whatever.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...