output of r1 shows that area 1 is a stub area.why?
I don't configure area 1 as a stub area.
sh run
Building configuration...
Current configuration : 2042 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname r1
!
logging queue-limit 100
!
ip subnet-zero
!
!
no ip domain lookup
!
mpls ldp logging neighbor-changes
frame-relay switching
!
!
!
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination
!
!
mta receive maximum-recipients 0
!
!
!
!
!
interface Ethernet1/0
ip address 30.1.1.1 255.255.255.0
half-duplex
!
interface TokenRing1/0
no ip address
shutdown
ring-speed 16
!
interface Serial4/0
no ip address
shutdown
!
interface Serial4/1
no ip address
shutdown
!
interface Serial4/2
ip address 10.1.1.1 255.255.255.0
clockrate 64000
!
router ospf 9
log-adjacency-changes
network 10.1.1.0 0.0.0.255 area 1
network 30.1.1.0 0.0.0.255 area 0
!
ip http server
ip classless
!
!
!
!
!
!
call rsvp-sync
!
voice-port 2/0/0
!
voice-port 2/0/1
!
!
mgcp profile default
!
!
!
dial-peer cor custom
!
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
length 0
line aux 0
line vty 0 4
login
!
!
end
r1#sh ip ospf data
OSPF Router with ID (30.1.1.1) (Process ID 9)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
30.1.1.1 30.1.1.1 1455 0x80000004 0x00336C 1
30.1.1.3 30.1.1.3 398 0x80000004 0x0018D7 2
192.168.0.104 192.168.0.104 398 0x80000003 0x00737E 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
30.1.1.3 30.1.1.3 1456 0x80000001 0x002788
40.1.1.4 192.168.0.104 398 0x80000001 0x000540
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.1.0 30.1.1.1 1489 0x80000002 0x006797
20.2.2.0 30.1.1.1 1489 0x80000002 0x0032B6
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
20.2.2.2 20.2.2.2 1686 0x80000003 0x0044BB 3
30.1.1.1 30.1.1.1 1489 0x80000005 0x00A5E4 2
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
30.1.1.0 30.1.1.1 1446 0x80000004 0x0025C9
40.1.1.0 30.1.1.1 388 0x80000003 0x00277E
r1#sh ip rout
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
20.0.0.0/24 is subnetted, 1 subnets
O 20.2.2.0 [110/791] via 10.1.1.2, 00:24:52, Serial4/2
40.0.0.0/24 is subnetted, 1 subnets
O 40.1.1.0 [110/74] via 30.1.1.3, 00:06:27, Ethernet1/0
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Serial4/2
30.0.0.0/24 is subnetted, 1 subnets
C 30.1.1.0 is directly connected, Ethernet1/0
r1#
r1#sh ip ospf data router 20.2.2.2
OSPF Router with ID (30.1.1.1) (Process ID 9)
Router Link States (Area 1)
Routing Bit Set on this LSA
LS age: 1838
Options: (No TOS-capability, DC)
LS Type: Router Links
Link State ID: 20.2.2.2
Advertising Router: 20.2.2.2
LS Seq Number: 80000003
Checksum: 0x44BB
Length: 60
Area Border Router
Number of Links: 3
Link connected to: a Stub Network
(Link ID) Network/subnet number: 20.2.2.0
(Link Data) Network Mask: 255.255.255.0
Number of TOS metrics: 0
TOS 0 Metrics: 10
Link connected to: another Router (point-to-point)
(Link ID) Neighboring Router ID: 30.1.1.1
(Link Data) Router Interface address: 10.1.1.2
Number of TOS metrics: 0
TOS 0 Metrics: 64
Link connected to: a Stub Network
(Link ID) Network/subnet number: 10.1.1.0
(Link Data) Network Mask: 255.255.255.0
Number of TOS metrics: 0
TOS 0 Metrics: 64
sh run
Building configuration...
Current configuration : 1435 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname "r2"
!
!
ip subnet-zero
ip cef
no ip domain-lookup
!
!
ip vrf v2
rd 2:2
route-target export 2:2
route-target import 2:2
!
!
!
!
interface Ethernet0
ip vrf forwarding v2
ip address 20.2.2.2 255.255.255.0
media-type 10BaseT
!
interface Ethernet1
no ip address
shutdown
media-type 10BaseT
!
interface Serial0
ip vrf forwarding v2
ip address 10.1.1.2 255.255.255.0
!
interface Serial1
no ip address
shutdown
!
interface Serial2
no ip address
shutdown
!
interface Serial3
no ip address
shutdown
!
interface BRI0
description 62359151
no ip address
encapsulation hdlc
shutdown
!
interface BRI1
no ip address
encapsulation hdlc
shutdown
!
interface BRI2
no ip address
encapsulation hdlc
shutdown
!
interface BRI3
no ip address
encapsulation hdlc
shutdown
!
interface BRI4
no ip address
encapsulation hdlc
shutdown
!
interface BRI5
no ip address
encapsulation hdlc
shutdown
!
interface BRI6
no ip address
encapsulation hdlc
shutdown
!
interface BRI7
no ip address
encapsulation hdlc
shutdown
!
router ospf 2 vrf v2
log-adjacency-changes
network 10.1.1.0 0.0.0.255 area 1
network 20.2.2.0 0.0.0.255 area 1
!
ip classless
no ip http server
ip pim bidir-enable
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
length 0
line aux 0
line vty 0 4
login
!
end
r2#sh ip ospf data
OSPF Router with ID (20.2.2.2) (Process ID 2)
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
20.2.2.2 20.2.2.2 1760 0x80000003 0x0044BB 3
30.1.1.1 30.1.1.1 1563 0x80000005 0x00A5E4 2
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
30.1.1.0 30.1.1.1 1520 0x80000004 0x0025C9
40.1.1.0 30.1.1.1 461 0x80000003 0x00277E
r2#sh ip route vrf v2
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
20.0.0.0/24 is subnetted, 1 subnets
C 20.2.2.0 is directly connected, Ethernet0
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Serial0
r2#
