May 2011
Intermediate to advanced
788 pages
23h 34m
English
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Route Types
The routing table can contain six types of routes:
- Host route
A host route is a route to a host. In other words, the route is not to a network. Host routes have a subnet mask of 255.255.255.255 and a prefix length of /32.
- Subnet
A subnet is a portion of a major network. The subnet mask is used to determine the size of the subnet. 10.10.10.0/24 (255.255.255.0) is a subnet.
- Summary (group of subnets)
A summary route is a single route that references a group of subnets. 10.10.0.0/16 (255.255.0.0) would be a summary, provided that subnets with longer masks (such as 10.10.10.0/24) existed.
- Major network
A major network is any classful network, along with its native mask. 10.0.0.0/8 (255.0.0.0) is a major network.
- Supernet (group of major networks)
A supernet is a single route that references a group of major networks. For example, 10.0.0.0/7 is a supernet that references 10.0.0.0/8 and 11.0.0.0/8.
- Default route
A default route is shown as 0.0.0.0/0 (0.0.0.0). This route is also called the route of last resort. This is the route that is used when no other route matches the destination IP address in a packet.
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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.
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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.