R3166-R3206-HP High-End Firewalls Network Management Configuration Guide-6PW101

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OSPF configuration
Open Shortest Path First (OSPF) is a link state interior gateway protocol developed by the OSPF working
group of the Internet Engineering Task Force (IETF). Now, OSPF version 2 (RFC 2328) is used.
OSPF has the following features:
• Wide scope—Supports networks of various sizes and up to several hundred routers in an OSPF
routing domain
• Fast convergence—Transmits updates instantly after network topology changes for routing
information synchronization in the AS.
• Loop-free—Computes routes with the shortest path first (SPF) algorithm according to collected link
states to avoid routing loops
• Area-based network partition—Splits an AS into different areas to facilitate management. In
addition, routing information transmitted between areas is summarized to reduce network
bandwidth consumption.
• Equal-cost multi-route—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 interface-based packet authentication to ensure the security of packet
exchange
• Multicast—Supports multicasting protocol packets on some types of links
Configuring OSPF in the web interface
Configuration prerequisites
Configure the link layer protocol and IP addresses for interfaces so that neighboring nodes can
communicate with each other.
Configuration overview
An OSPF routing domain has different types of routers, such as intra-area routers, Area Border Routers
(ABRs), and Autonomous System Boundary Routers (ASBRs). OSPF can work properly only after being
enabled on a router, regardless of the router’s type.
Network planning is needed before OSPF configuration on routers. The configurations for routers in an
area are performed on the area basis. Wrong configurations may cause communication failures, even
routing information block or routing loops between neighboring routers.
Complete the following tasks to configure OSPF:
Table 56 OSPF configuration task list
Task Remarks
Enable OSPF
Configuring OSPF
globally
Required
Enable OSPF on all interfaces.