OSPF 기본 설정 명령어
1. OSPF 활성화
conf t
router ospf [Process ID]
2. Priority 값 설정
conf t
int [Interface]
ip ospf priority [Priority 값]
3. 라우터 ID설정
라우터 ID는 A.B.C.D형태
conf t
router ospf [Process ID]
router-id [Router ID]
4. 광고 네트워크 및 Area 설정
conf t
router ospf [Process ID]
network [NI] [Wildcard-mask] area [area-id]
5. Redistribute
subnet 정보까지 전달해야하므로 subnet을 붙여야함.
conf t
router ospf [Process ID]
# metric까지 설정.
redistribute [Protocol] metric [value] subnet
# metric은 정의된 값을 사용
redistribute [Protocol] subnet
6. OSPF 정보 확인.
# neighbor
show ip ospf neighbor
# LSDB
show ip ospf databse
# Interface OSPF Information
show ip ospf int [Interface]
# Interface OSPF Brief Information
show ip ospf int [Interface] bri
실습 예제
- R1 ~ 3은 BR
- R3는 ABR
- R4는 Area 1 IR
설정값
R1
R1 sh runBuilding configuration...
Current configuration : 1713 bytes
!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
voice dsp waitstate 0
!
!
!
!
!
!
!
!
!
!
!
!
!
memory-size iomem 0
archive
log config
hidekeys
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.0.0
!
interface FastEthernet0/0
ip address 10.0.1.1 255.255.255.0
duplex half
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
interface Ethernet2/0
no ip address
shutdown
duplex half
!
interface Ethernet2/1
no ip address
shutdown
duplex half
!
interface Ethernet2/2
no ip address
shutdown
duplex half
!
interface Ethernet2/3
no ip address
shutdown
duplex half
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 1.1.0.0 0.0.255.255 area 0
network 10.0.1.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
!
control-plane
!
!
!
mgcp fax t38 ecm
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
end
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 1.1.1.1
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Maximum path: 4
Routing for Networks:
1.1.0.0 0.0.255.255 area 0
10.0.1.0 0.0.0.255 area 0
Reference bandwidth unit is 100 mbps
Routing Information Sources:
Gateway Distance Last Update
3.3.3.3 110 00:21:29
2.2.2.2 110 00:19:17
Distance: (default is 110)
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 1 FULL/BDR 00:00:35 10.0.1.3 FastEthernet0/0
3.3.3.3 1 FULL/DR 00:00:39 10.0.1.2 FastEthernet0/0 OSPF Router with ID (1.1.1.1) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 1201 0x80000004 0x0057A2 2
2.2.2.2 2.2.2.2 1159 0x80000002 0x005DA8 1
3.3.3.3 3.3.3.3 1202 0x80000005 0x00FCFE 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.1.2 3.3.3.3 1159 0x80000002 0x00C63D
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 2.2.2.2 1198 0x80000001 0x00FA31
3.3.3.3 3.3.3.3 1598 0x80000001 0x00AE75
4.4.4.4 2.2.2.2 1198 0x80000001 0x0021C2
10.0.2.0 2.2.2.2 1198 0x80000001 0x0037B1Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo0 1 0 1.1.1.1/16 1 LOOP 0/0
Fa0/0 1 0 10.0.1.1/24 1 DROTH 2/2Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo0 1 0 1.1.1.1/16 1 LOOP 0/0
Fa0/0 1 0 10.0.1.1/24 1 DROTH 2/2R2
R2 sh runBuilding configuration...
Current configuration : 1713 bytes
!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
voice dsp waitstate 0
!
!
!
!
!
!
!
!
!
!
!
!
!
memory-size iomem 0
archive
log config
hidekeys
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
ip address 3.3.3.3 255.255.0.0
!
interface FastEthernet0/0
ip address 10.0.1.2 255.255.255.0
duplex half
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
interface Ethernet2/0
no ip address
shutdown
duplex half
!
interface Ethernet2/1
no ip address
shutdown
duplex half
!
interface Ethernet2/2
no ip address
shutdown
duplex half
!
interface Ethernet2/3
no ip address
shutdown
duplex half
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
network 3.3.0.0 0.0.255.255 area 1
network 10.0.1.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
!
control-plane
!
!
!
mgcp fax t38 ecm
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
end
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 3.3.3.3
It is an area border router
Number of areas in this router is 2. 2 normal 0 stub 0 nssa
Maximum path: 4
Routing for Networks:
3.3.0.0 0.0.255.255 area 1
10.0.1.0 0.0.0.255 area 0
Reference bandwidth unit is 100 mbps
Routing Information Sources:
Gateway Distance Last Update
1.1.1.1 110 00:21:38
2.2.2.2 110 00:19:20
Distance: (default is 110)
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 1 FULL/DROTHER 00:00:38 10.0.1.1 FastEthernet0/0
2.2.2.2 1 FULL/BDR 00:00:32 10.0.1.3 FastEthernet0/0 OSPF Router with ID (3.3.3.3) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 1206 0x80000004 0x0057A2 2
2.2.2.2 2.2.2.2 1163 0x80000002 0x005DA8 1
3.3.3.3 3.3.3.3 1205 0x80000005 0x00FCFE 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.1.2 3.3.3.3 1162 0x80000002 0x00C63D
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 2.2.2.2 1202 0x80000001 0x00FA31
3.3.3.3 3.3.3.3 1602 0x80000001 0x00AE75
4.4.4.4 2.2.2.2 1202 0x80000001 0x0021C2
10.0.2.0 2.2.2.2 1202 0x80000001 0x0037B1
Router Link States (Area 1)
Link ID ADV Router Age Interface PID Area IP Address/Mask Cost State Nbrs F/C
Fa0/0 1 0 10.0.1.2/24 1 DR 2/2
Lo0 1 1 3.3.3.3/16 1 LOOP 0/0Interface PID Area IP Address/Mask Cost State Nbrs F/C
Fa0/0 1 0 10.0.1.2/24 1 DR 2/2
Lo0 1 1 3.3.3.3/16 1 LOOP 0/0R3
R3 sh runBuilding configuration...
Current configuration : 1758 bytes
!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
voice dsp waitstate 0
!
!
!
!
!
!
!
!
!
!
!
!
!
memory-size iomem 0
archive
log config
hidekeys
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.0.0
!
interface FastEthernet0/0
ip address 10.0.1.3 255.255.255.0
duplex half
!
interface Serial1/0
ip address 10.0.2.1 255.255.255.0
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
interface Ethernet2/0
no ip address
shutdown
duplex half
!
interface Ethernet2/1
no ip address
shutdown
duplex half
!
interface Ethernet2/2
no ip address
shutdown
duplex half
!
interface Ethernet2/3
no ip address
shutdown
duplex half
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 2.2.0.0 0.0.255.255 area 1
network 10.0.1.0 0.0.0.255 area 0
network 10.0.2.0 0.0.0.255 area 1
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
!
control-plane
!
!
!
mgcp fax t38 ecm
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
end
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 2.2.2.2
It is an area border router
Number of areas in this router is 2. 2 normal 0 stub 0 nssa
Maximum path: 4
Routing for Networks:
2.2.0.0 0.0.255.255 area 1
10.0.1.0 0.0.0.255 area 0
10.0.2.0 0.0.0.255 area 1
Reference bandwidth unit is 100 mbps
Routing Information Sources:
Gateway Distance Last Update
1.1.1.1 110 00:19:24
4.4.4.4 110 00:20:04
3.3.3.3 110 00:19:24
10.0.2.2 110 00:25:26
Distance: (default is 110)
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 1 FULL/DROTHER 00:00:35 10.0.1.1 FastEthernet0/0
3.3.3.3 1 FULL/DR 00:00:32 10.0.1.2 FastEthernet0/0
4.4.4.4 0 FULL/ - 00:00:35 10.0.2.2 Serial1/0 OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 1209 0x80000004 0x0057A2 2
2.2.2.2 2.2.2.2 1166 0x80000002 0x005DA8 1
3.3.3.3 3.3.3.3 1210 0x80000005 0x00FCFE 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.1.2 3.3.3.3 1166 0x80000002 0x00C63D
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 2.2.2.2 1204 0x80000001 0x00FA31
3.3.3.3 3.3.3.3 1606 0x80000001 0x00AE75
4.4.4.4 2.2.2.2 1204 0x80000001 0x0021C2
10.0.2.0 2.2.2.2 1204 0x80000001 0x0037B1
Router Link States (Area 1)
Link ID ADV Router Age Interface PID Area IP Address/Mask Cost State Nbrs F/C
Fa0/0 1 0 10.0.1.3/24 1 BDR 2/2
Lo0 1 1 2.2.2.2/16 1 LOOP 0/0
Se1/0 1 1 10.0.2.1/24 64 P2P 1/1Interface PID Area IP Address/Mask Cost State Nbrs F/C
Fa0/0 1 0 10.0.1.3/24 1 BDR 2/2
Lo0 1 1 2.2.2.2/16 1 LOOP 0/0
Se1/0 1 1 10.0.2.1/24 64 P2P 1/1R4
R4 sh runBuilding configuration...
Current configuration : 1713 bytes
!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
voice dsp waitstate 0
!
!
!
!
!
!
!
!
!
!
!
!
!
memory-size iomem 0
archive
log config
hidekeys
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface Loopback0
ip address 4.4.4.4 255.255.0.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface Serial1/0
ip address 10.0.2.2 255.255.255.0
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
interface Ethernet2/0
no ip address
shutdown
duplex half
!
interface Ethernet2/1
no ip address
shutdown
duplex half
!
interface Ethernet2/2
no ip address
shutdown
duplex half
!
interface Ethernet2/3
no ip address
shutdown
duplex half
!
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
network 4.4.0.0 0.0.255.255 area 1
network 10.0.2.0 0.0.0.255 area 1
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
no cdp log mismatch duplex
!
!
!
!
!
!
!
control-plane
!
!
!
mgcp fax t38 ecm
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
end
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 4.4.4.4
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Maximum path: 4
Routing for Networks:
4.4.0.0 0.0.255.255 area 1
10.0.2.0 0.0.0.255 area 1
Reference bandwidth unit is 100 mbps
Routing Information Sources:
Gateway Distance Last Update
2.2.2.2 110 00:19:27
Distance: (default is 110)
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:00:39 10.0.2.1 Serial1/0 OSPF Router with ID (4.4.4.4) (Process ID 1)
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 1204 0x80000005 0x0076D6 3
4.4.4.4 4.4.4.4 1478 0x80000001 0x009CA4 3
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
1.1.1.1 2.2.2.2 1169 0x80000001 0x0033FB
3.3.3.3 2.2.2.2 1169 0x80000001 0x00D650
10.0.1.0 2.2.2.2 1209 0x80000001 0x00C95FInterface PID Area IP Address/Mask Cost State Nbrs F/C
Lo0 1 1 4.4.4.4/16 1 LOOP 0/0
Se1/0 1 1 10.0.2.2/24 64 P2P 1/1Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo0 1 1 4.4.4.4/16 1 LOOP 0/0
Se1/0 1 1 10.0.2.2/24 64 P2P 1/1
Packet
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