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Riverstone Networks RS Switch Router User Guide Release 8.0 11-1
11 IP ROUTING CONFIGURATION
GUIDE
The RS supports standards-based TCP, UDP, and IP. This chapter describes how to configure IP interfaces and
general non-protocol-specific routing parameters.
11.1 IP ROUTING PROTOCOLS
The RS supports standards-based unicast and multicast routing. Unicast routing protocol support includes Interior
Gateway Protocols and Exterior Gateway Protocols. Multicast routing protocols are used to determine how
multicast data is transferred in a routed environment.
11.1.1 Unicast Routing Protocols
Interior Gateway Protocols are used for routing networks that are within an “autonomous system,” a network of
relatively limited size. All IP interior gateway protocols must be specified with a list of associated networks before
routing activities can begin. A routing process listens to updates from other routers on these networks and
broadcasts its own routing information on those same networks. The RS supports the following Interior Gateway
Protocols:
•
Routing Information Protocol (RIP) Version 1, 2 (RFC 1058, 1723). Configuring RIP for the RS
is described in Chapter 13, "RIP Configuration Guide."
•
Open Shortest Path First (OSPF) Version 2 (RFC 1583). Configuring OSPF for the RS is
described in Chapter 14, "OSPF Configuration Guide."
•
Intermediate System-Intermediate System (IS-IS) (RFC 1142). Configuring IS-IS for the RS is
described in Chapter 15, "IS-IS Configuration Guide.".
Exterior Gateway Protocols are used to transfer information between different “autonomous systems”. The RS
supports the following Exterior Gateway Protocol:
•
Border Gateway Protocol (BGP) Version 3, 4 (RFC 1267, 1771). Configuring BGP for the RS
is described in Chapter 16, "BGP Configuration Guide."
11.1.2 Multicast Routing Protocols
IP multicasting allows a host to send traffic to a subset of all hosts. These hosts subscribe to group membership,
thus notifying the RS of participation in a multicast transmission.