July 2002
Beginner
360 pages
11h 19m
English
Content preview from IPv6 Essentials
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,
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.
BGP Extensions for IPv6
There is no actual BGP for IPv6. The IPv6 support derives from the capability of BGP-4 to exchange information about network layer protocols other than IPv4. These multiprotocol extensions of BGP-4 are defined in RFC 2858, which obsoletes RFC 2283. RFC 2283 is mentioned here because it is the base document for RFC 2545, which defines the IPv6 extensions of BGP-4. It is important to understand BGP-4 fully before looking at its multiprotocol extensions. The following sections start with a short overview of BGP-4 and its operations as defined in RFC 1771. BGP message types are then discussed. The last part covers the implementation of IPv6 information carried within BGP-4.
BGP-4 Overview
Each AS runs its interior routing protocol (RIP, OSPF, etc.) to distribute all routing information within the AS. The BGP is an exterior routing protocol whose primary function is to exchange information about the reachability of networks between ASes. Each AS receives a unique AS number assigned by the numbering authority. Figure 8-34 shows the different types of ASes that can be interconnected using BGP-4.
Figure 8-34. BGP traffic and AS types
The AS types are further explained in the following list:
- Transit AS
A transit AS has multiple connections to other AS. Routing updates from any AS arriving at the transit AS may be passed through the AS and distributed out to other ...
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.