UMN:CLI User Manual
V5808
540
11.2 Open Shortest Path First (OSPF)
Open shortest path first (OSPF) is an interior gateway protocol developed by the OSPF
working group of Internet Engineering Task Force (IETF). OSPF designed for IP network
supports IP subnetting and marks on information from exterior network. Moreover, it
supports packet authorization and transmits/receives routing information through IP
multicast. It is most convenient to operate OSPF on layered network.
OSPF is the most compatible routing protocol in layer network environment. The first
setting in OSPF network is planning network organized with router and configures border
router faced with multiple section.
After that, sets up the basic configuration for OSPF router operation and assigns interface
to Area. To make compatible OSPF router configuration for user environment, each router
configuration must be accorded by verification.
11.2.1 Enabling OSPF
To use OSPF routing protocol, it must be activated as other routing protocols. After
activation, configures network address and ID which is operated by OSPF.
The following command shows steps of activating OSPF.
Step1
Open Router Configuration mode from Global Configuration mode.
Opens Router Configuration mode with enabling OSPF.
no router ospf [<1-65535>]
Disables OSPF routing protocol.
In case that more than 2 OSPF processes are operated, a process number should be
assigned. Normally, there is one OSPF which is operating in one router.
If OSPF routing protocol is disabled, all related configuration will be lost.
Step2
Configure a network ID of OSPF. Network ID decides IP v4 address of this network.
Assigns a router ID with enabling OSPF.
Deletes a configured router ID.
In case if using router-id command to apply new router ID on OSPF process, OSPF
process must be restarted to apply. Use the clear ip ospf process command to restart
OSPF process.
To Next Page
Loading...