Chapter14 Routing
OSPF Management
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Cisco 12000/10720 v3.2 Router Manager User Guide
OL-6690-01
OSPF Management
Open Shortest Path First (OSPF) is a TCP/IP internet routing protocol. OSPF is
classified as an Interior Gateway Protocol (IGP). This means that it distributes
routing information between routers belonging to a single Autonomous System
(AS). The OSPF protocol is based on link-state or SPF technology based on
Dijkstra's algorithm. Each OSPF router maintains an identical database describing
the Autonomous System's topology. From this database, a routing table is
calculated by constructing a shortest-path tree.
OSPF has been designed expressly for the TCP/IP internet environment, including
explicit support for Classless Inter-Domain Routing (CIDR) and the tagging of
externally-derived routing information. OSPF also provides for the authentication
of routing updates, Variable Length Subnet Masks (VLSM), route summarization
and utilizes IP multicast when sending/receiving the updates. OSPF recalculates
routes quickly in the face of topological changes, utilizing a minimum of routing
protocol traffic.
OSPF Configuration
The OSPF Configuration window allows the user to enable or remove OSPF
configurations on a router. The OSPF configuration section covers the following
topics:
•Viewing the OSPF Configuration Window
•Config Tab—Detailed Description
•Adding an OSPF Process
•Removing an OSPF Process
•Viewing the Network Tab on the OSPF Configuration Window
•Network Tab—Detailed Description
•Configuring a Network
•Configure Network—Detailed Description