Chapter 9. Routing and Routing Protocols

Routing Protocols Concepts

Creating Routing Tables

Configuring Static, Aggregate, and Generated Routes

Configuring Martian Addresses

BGP

IS-IS

OSPF

RIP

Multicast Protocols Overview

PIM

DVMRP

IGMP

SAP and SDP

MSDP

Multicast Scoping

The JUNOS routing protocol process supports a wide variety of routing protocols, including IS-IS, OSPF, RIP, BGP, PIM, MSDP, and DVMRP. The JUNOS software maintains two databases for routing information: the routing table, which contains all the routing information learned by all routing protocols, and the forwarding table, which contains the routes actually used to forward packets through the router. In addition, the interior gateway protocols (IGPs), IS-IS and OSPF, maintain link-state databases. This chapter explains the concepts, tables, and configurations used by the JUNOS routing protocol process.