Reference Guide

SPF algorithm executed 38 times
Area ranges are
Stub areas
Type 5 LSAs are not ooded into stub areas. The ABR advertises a default route into the stub area to which it is attached. Stub area routers
use the default route to reach external destinations.
1 Enable OSPF routing and enter ROUTER-OSPF mode, from 1 to 65535.
router ospf instance number
2 Congure an area as a stub area in ROUTER-OSPF mode.
area area-id stub [no-summary]
• 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.
3 Apply the conguration.
do commit
Congure stub area
OS10(config)# router ospf 10
OS10(conf-router-ospf-10)# area 10.10.5.1 stub
OS10(conf-router-ospf-10)# do commit
View stub area conguration
OS10(conf-router-ospf-10)# do show ip ospf database
OSPF Router with ID (99.99.99.99) (Process ID 65535)
Router (Area 0)
Link ID ADV Router Age Seq# Checksum Link-count
-----------------------------------------------------------
99.99.99.99 99.99.99.99 376 0x80000002 0x66B0 1
150.1.1.1 150.1.1.1 124 0x80000003 0xC638 1
Network (Area 0)
Link ID ADV Router Age Seq# Checksum
--------------------------------------------
11.1.1.2 150.1.1.1 377 0x80000001 0x3951
Summary Network (Area 0)
Link ID ADV Router Age Seq# Checksum
---------------------------------------------------
110.1.1.0 99.99.99.99 337 0x80000001 0x1D41
110.1.2.0 99.99.99.99 337 0x80000001 0x124B
110.1.3.0 99.99.99.99 337 0x80000001 0x755
110.1.4.0 99.99.99.99 337 0x80000001 0xFB5F
110.1.5.0 99.99.99.99 337 0x80000001 0xF069
110.1.6.0 99.99.99.99 337 0x80000001 0xE573
110.1.7.0 99.99.99.99 337 0x80000001 0xDA7D
110.1.8.0 99.99.99.99 337 0x80000001 0xCF87
110.1.9.0 99.99.99.99 337 0x80000001 0xC491
110.1.10.0 99.99.99.99 337 0x80000001 0xB99B
120.1.1.0 150.1.1.1 79 0x80000001 0xDF68
120.1.2.0 150.1.1.1 79 0x80000001 0xD472
120.1.3.0 150.1.1.1 79 0x80000001 0xC97C
120.1.4.0 150.1.1.1 79 0x80000001 0xBE86
120.1.5.0 150.1.1.1 79 0x80000001 0xB390
120.1.6.0 150.1.1.1 79 0x80000001 0xA89A
120.1.7.0 150.1.1.1 79 0x80000001 0x9DA4
120.1.8.0 150.1.1.1 79 0x80000001 0x92AE
120.1.9.0 150.1.1.1 79 0x80000001 0x87B8
120.1.10.0 150.1.1.1 79 0x80000001 0x7CC2
140.1.1.0 99.99.99.99 382 0x80000001 0x95AA
266
Layer 3