March 2009
Beginner to intermediate
144 pages
3h 13m
English
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Ethernet Interfaces
Almost every Cisco router has one or more Ethernet interfaces. Ethernet is a broadcast medium. Many devices can be attached to a single Ethernet network, and information transmitted by a host is broadcast across the entire Ethernet network. Almost all modern office networks are Ethernet.
Theoretically, every host on an Ethernet network sees all data transmitted by every host on that Ethernet. Switches direct transmissions to only the target system whenever possible. Even a top-of-the-line switch still sends some traffic to all the hosts on the network. If you're having trouble with your local Ethernet, a bad switch or a bad cable is the most common cause. (If you're still using a hub, that's almost certainly the problem. Please ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.