Users Guide

• area-id—Enter the OSPF area ID as an IP address (A.B.C.D) or number, from 1 to 65535.
• no-summary—(Optional) Enter to prevent an ABR from sending summary LSA to the stub area.
Congure stub area
OS10(config)# router ospf 10
OS10(conf-router-ospf-10)# area 10.10.5.1 stub
View stub area conguration
OS10(conf-router-ospf-10)# do show ip ospf database
OSPF Router with ID (111.2.1.1) (Process ID 10)
Router (Area 0.0.0.0)
Link ID ADV Router Age Seq# Checksum Link count
111.2.1.1 111.2.1.1 1281 0x8000000d 0x9bf2 3
111.111.111.1 111.111.111.1 1430 0x8000021a 0x515a 1
111.111.111.2 111.111.111.2 1430 0x8000021a 0x5552 1
112.2.1.1 112.2.1.1 1282 0x8000000b 0x0485 3
112.112.112.1 112.112.112.1 1305 0x80000250 0xbab2 1
112.112.112.2 112.112.112.2 1305 0x80000250 0xbeaa 1
Network (Area 0.0.0.0)
Link ID ADV Router Age Seq# Checksum
110.1.1.2 112.2.1.1 1287 0x80000008 0xd2b1
111.1.1.1 111.2.1.1 1458 0x80000008 0x1b8f
111.2.1.1 111.2.1.1 1458 0x80000008 0x198f
112.1.1.1 112.2.1.1 1372 0x80000008 0x287c
112.2.1.1 112.2.1.1 1372 0x80000008 0x267c
Summary Network (Area 0.0.0.0)
Passive interfaces
A passive interface does not send or receive routing information. Conguring an interface as a passive interface suppresses both receiving
and sending routing updates.
Although the passive interface does not send or receive routing updates, the network on that interface is included in OSPF updates sent
through other interfaces.
1 Enter an interface type in INTERFACE mode.
interface ethernet node/slot/port[:subport]
2 Congure the interface as a passive interface in INTERFACE mode.
ip ospf passive
Congure passive interfaces
OS10(config)# interface ethernet 1/1/6
OS10(conf-if-eth1/1/6)# ip ospf passive
View passive interfaces
OS10# show running-configuration
!!!
!!
interface ethernet1/1/6
ip address 10.10.10.1/24
no switchport
no shutdown
ip ospf 100 area 0.0.0.0
ip ospf passive
260
Layer 3