Chapter14 Routing
OSPF Management
Cisco 12000/10720 v3.2 Router Manager User Guide
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
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