September 2009
Beginner
942 pages
85h 34m
English
Content preview from Linux in a Nutshell, 6th EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Gateways and Routing
Gateways are hosts responsible for exchanging routing information and forwarding data from one network to another. Each portion of a network that is under a separate local administration is called an autonomous system (AS). Autonomous systems connect to each other via exterior gateways. An AS also may contain its own system of networks, linked via interior gateways.
Gateway protocols
Gateway protocols include:
- EGP (Exterior Gateway Protocol)BGP (Border Gateway Protocol)
Protocols for exterior gateways to exchange information
- RIP (Routing Information Protocol)
Interior gateway protocol; most popular for LANs
- Hello ProtocolOSPF (Open Shortest Path First)
Interior gateway protocols
Routing daemons
While most networks will use a dedicated router as a gateway, routing daemons like quagga and GNU Zebra, can be run on a host to make it function as a gateway. These replace the older gated daemon. Only one of them can run on a host at any given time. They allow a host to function as both an exterior and interior gateway and simplify routing configuration by combining the protocols RIP, Hello, BGP, EGP, and OSPF into a single package. We do not cover quagga or GNU Zebra in this book.
routed, a network routing daemon that uses RIP, allows a host to function only as an interior gateway, and manages the Internet routing tables. For more details on routed, see Chapter 3.
Routing tables
Routing tables provide information needed to route packets to their destinations. This information includes ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.