Cisco,CCENT,CCNA,Certification computer Cisco CCENT / CCNA Certification Exam Tutorial: What Are Br
Gone are those times when the companies and the organisations didn't need a hi-tech system to handle them. Owing to the considerable increase in the business sector and thus, an enormous increase in the complexity of the organisational struc ----------------------------------------------------------Permission is granted for the below article to forward,reprint, distribute, use for ezine, newsletter, website,offer as free bonus or part of a product for sale as longas no changes a
The Cisco CCENT exam demands that you master the fundamentals of networking, and it doesnt get much more fundamental than broadcasts! Every network has them, and every network administrator needs to be aware of what broadcasts are and their potential impact on network performance.When a device on a network generates a message, its one of three types a unicast, a multicast, or a broadcast. A unicast is a message intended for one other host; a multicast is intended for a group of hosts; a broadcast is intended for every host that can possibly receive it and thats where the trouble can begin.Why? Because not every other host needs or wants to receive that message, and if Host A should not receive broadcasts sent by Host B, we should configure the network accordingly. Everything we do on a network has a cost in performance, and if a host is regularly processing messages that it doesnt need, that will result in a decline in that hosts performance. That decline may be slight, but if the host in question is receiving many unnecessary broadcasts, the decline in performance may be significant. Worse, the impact to our network as a whole may be significant as well.Broadcasts tend to result in more broadcasts, and if hosts on the network continue to answers broadcasts with broadcasts, we end up with a broadcast storm. Broadcast storms start small, but just like a snowball, they can end up being very big so big that normal network operations are compromised and/or prevented!Dont let the threat of a broadcast storm make you nervous about broadcasts, though. Broadcasts are part of a networks normal operation, and weve got quite a few methods available to prevent these storms. Well discuss those in a future Cisco CCENT exam tutorial!
Cisco,CCENT,CCNA,Certification