FastEther Channel

FastEther Channel (FEC) is a Cisco method that bundles 100 Mbps FAST ETHERNET ports into a logical link. Because any redundant paths between two switches mean some ports will be in a blocking state and bandwidth will be reduced, Cisco developed FEC to maximize bandwidth use. Figure 2-4 displays a sw...


802.11g is backward compatible with 802.11b, which is referred to as 802.11b/g mixed-mode operation. For example, an 802.11b radio card can associate with an 802.11g access point. Most organizations today are deploying 802.11g wireless LANs. Because of its support for data rates up to 54 Mbps, 802.1...

Understanding Level 1 and Level 2 Routing

In level 1, IS nodes are based on the ID portion of the address. All level 1 routers route within their own area. They recognize the destination within their area by reading the destination address. If the destination is within the same area, the packet is routed to the destination. If the destinati...

Joining a Group

Before a host can receive any multicast traffic, a multicast application must be installed and run on that host. The process of installing and running a multicast application is referred to as launching an application or joining a multicast group. After a host joins a group, the host software calcul...

Distribution Layer

The distribution layer provides interconnection between the campus network

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