Archive for the 'General CCNA' Category

What is the Switch?

Wednesday, March 10th, 2010

This is the most common devices for interconnecting the local area network. The Switch provides the bridging functionality with greater efficiency and act as a multipoint bridge to connect devices in a local area network. Switch looks each data unit it received and determines from a physical address that is the MAC address, for which [...]

What is VLSM?

Wednesday, March 10th, 2010

VLSM (Variable Length Subnet Mask) is simply a subnetting a subnet. After the network address is subnetted, those subnet can be further subnetted.VLSM is a sub-subnetting.
In routing protocols RIP v1 or IGRP not use VLSM means there is no field defines for subnet information in these protocols. This is called classfull routing. RIP and IGRP [...]