HP VPN Firewall Appliances Network Management Configuration Guide

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Configuring OSPF
The term "router" in this document refers to both routers and routing-capable firewalls and firewall
modules.
Unless otherwise stated, OSPF refers to OSPFv2 throughout this chapter.
Overview
Open Shortest Path First (OSPF) is a link state IGP developed by the OSPF working group of the IETF.
OSPF version 2 is used for IPv4.
OSPF has the following features:
• Wide scope—Supports various network sizes and up to several hundred routers in an OSPF routing
domain.
• Fast convergence—Advertises routing updates instantly upon network topology changes.
• Loop free—Computes routes with the SPF algorithm to avoid routing loops.
• Area-based network partition—Splits an AS into multiple areas to facilitate management. This
feature reduces the LSDB size on routers to save memory and CPU resources, and reduces route
updates transmitted between areas to save bandwidth.
• ECMP routing—Supports multiple equal-cost routes to a destination.
• Routing hierarchy—Supports a four-level routing hierarchy that prioritizes routes into intra-area,
inter-area, external Type-1, and external Type-2 routes.
• Authentication—Supports area- and interface-based packet authentication to ensure the security of
packet exchange.
• Support for multicasting—Multicasts protocol packets on some types of links to avoid impacting
other devices.
Configuring OSPF in the Web interface
Recommended configuration procedure
Before the configuration, you must make proper network layouts. Incorrect configurations might result in
transmission problems between neighboring routers, routing information congestion, or routing loops.
The Web interface supports configuring only the basic OSPF functions. The advanced functions, such as
tuning and optimizing networks, FRR, and GR, are supported at the command line interface (CLI).