Cisco 15327 User Manual download pdf (Page 172)

11-14

Ethernet Card Software Feature and Configuration Guide, R7.2

Chapter 11 Configuring Networking Protocols

Configuring OSPF

Use the no form of these commands to remove the configured parameter value or return to the

default value. Example 11-6 shows the output of the show ip ospf interface privileged EXEC command.

Example 11-6 show ip ospf interface Privileged EXEC Command Output

Router# show ip ospf interface

FastEthernet0 is up, line protocol is up

Internet Address 192.168.3.1/24, Area 0

Process ID 1, Router ID 192.168.3.1, Network Type BROADCAST, Cost: 1

Transmit Delay is 1 sec, State DR, Priority 1

Designated Router (ID) 192.168.3.1, Interface address 192.168.3.1

No backup designated router on this network

Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

Hello due in 00:00:01

Index 2/2, flood queue length 0

Next 0x0(0)/0x0(0)

Last flood scan length is 0, maximum is 0

Last flood scan time is 0 msec, maximum is 0 msec

Neighbor Count is 0, Adjacent neighbor count is 0

Suppress hello for 0 neighbor(s)

POS0 is up, line protocol is up

Internet Address 192.168.2.2/24, Area 0

Process ID 1, Router ID 192.168.3.1, Network Type BROADCAST, Cost: 1

Transmit Delay is 1 sec, State DR, Priority 1

Designated Router (ID) 192.168.3.1, Interface address 192.168.2.2

Backup Designated router (ID) 192.168.2.1, Interface address 192.168.2.1

Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

Hello due in 00:00:05

Index 1/1, flood queue length 0

Next 0x0(0)/0x0(0)

Last flood scan length is 2, maximum is 2

Last flood scan time is 0 msec, maximum is 0 msec

Neighbor Count is 1, Adjacent neighbor count is 1

Adjacent with neighbor 192.168.2.1 (Backup Designated Router)

Suppress hello for 0 neighbor(s)

OSPF Area Parameters

You can optionally configure several OSPF area parameters. These parameters include authentication for

password-based protection against unauthorized access to an area, stub areas, and NSSAs. Stub areas are

areas into which information about external routes is not sent. Instead, the ABR generates a default

external route into the stub area for destinations outside the autonomous system (AS). An NSSA does

not flood all LSAs from the core into the area, but can import AS external routes within the area by

redistribution.

Step 11

Router(config-if)# ip ospf

database-filter all out

(Optional) Blocks flooding of OSPF LSA packets to the

interface. By default, OSPF floods new LSAs over all

interfaces in the same area, except the interface on which

the LSA arrives.

Step 12

Router(config-if)# end

Returns to privileged EXEC mode.

Step 13

Router# show ip ospf interface

[

interface-name

]

Displays OSPF-related interface information.

Step 14

Router# copy running-config

startup-config

(Optional) Saves your entries in the configuration file.

Command Purpose

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