A collision domain is anywhere that packets can collide in the network. This generally occurs in half-duplex hub environments. So, a hub does represent a single collision domain. All packets sent out are competing for the same bandwidth. In a full-duplex switched environment, packets can be sent at the same time by multiple hosts and do not collide. Strictly speaking, in a switched environment, each port represents a segment. So, a segment can be said to be a part of the network where all devices use the same physical connection. If a group of computers were connected to a hub which then connected to a switch port, this would be 1 segment. If, however, you connect another switch, this would create another segment. You will also see the term segment used to indicate a part of the network separated from the rest of the network by a Layer 3 device (router). The following link might help.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...