User guide

B
LACK
D
IAMOND
U
SER
G
UIDE
8-1
8
IP Unicast Routing
This chapter describes how to configure IP routing on the BlackDiamond. It assumes
that you are already familiar with IP unicast routing. If not, refer to the following
publications for additional information:
RFC 1256 — ICMP Router Discovery Messages
RFC 1812 — Requirements for IP Version 4 Routers
For more information on routing protocols, refer to Chapter 9.
O
VERVIEW OF
IP U
NICAST
R
OUTING
The BlackDiamond provides full Layer 3, IP unicast routing. It exchanges routing
information with other routers on the network using either the Routing Information
Protocol (RIP) or the Open Shortest Path First (OSPF) protocol. The BlackDiamond
dynamically builds and maintains a routing table, and determines the best path for each
of its routes.
Each host using the IP unicast routing functionality of the BlackDiamond must have a
unique IP address assigned. In addition, the default gateway assigned to the host must
be the IP address of the BlackDiamond router interface.
RIP and OSPF are described in Chapter 9.