8.6 Chapter Summary


Routing protocols help make up the map that allows the Internet to exist by telling each other about the networks they know of, where they are, and how far away. These pieces of information allow a router to make a forwarding decision for a particular destination. There are two major groups of protocols: those that communicate between different administrative entities (called EGPs), and those that operate within an administrative entity (IGPs). IGPs are routing protocols that service networks under the control of one administrative entity. IGPs can be either distance vector, based on hop count, or link state, based on a complete picture of routers and links for a given area.

RIP is a type of distance vector protocol and has many limitations. OSPF and IS-IS are both LSPs that use a database to keep track of routers, links, and networks in an area. Both of these link state networks can be broken down into multiple areas that connect to a backbone through which all traffic to another area must pass.

With careful planning and proper feature implementation, the Juniper Networks router can create a high-speed, fault-tolerant, scalable network for the internal administrative entity.



Juniper Networks Reference Guide. JUNOS Routing, Configuration, and Architecture
Juniper Networks Reference Guide: JUNOS Routing, Configuration, and Architecture: JUNOS Routing, Configuration, and Architecture
ISBN: 0201775921
EAN: 2147483647
Year: 2002
Pages: 176

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