i - IS-IS buy abercrombie
 

实验环境DynamipsGUI v2.7
R1上配置内容
R1#show run
Building configuration...
Current configuration : 605 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R1
!
ip subnet-zero
!
no ip domain-lookup
!
interface Loopback0
ip address 10.10.10.10 255.255.255.0
!
interface FastEthernet0/0
ip address 172.16.1.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 172.16.2.1 255.255.255.0
duplex auto
speed auto
!
router rip
version 2
network 10.0.0.0
network 172.16.0.0
no auto-summary
!
ip classless
ip http server
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end
R1#show ip route
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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR,buy abercrombie, P - periodic downloaded static route
Gateway of last resort is not set
R 192.168.10.0/24 [120/1] via 172.16.1.2, 00:00:08, FastEthernet0/0
172.16.0.0/24 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, FastEthernet0/0
C 172.16.2.0 is directly connected, FastEthernet1/0
R 192.168.20.0/24 [120/1] via 172.16.1.2, 00:00:08, FastEthernet0/0
10.0.0.0/24 is subnetted, 1 subnets
C 10.10.10.0 is directly connected, Loopback0
R1#



S1上配置内容
S1#show run
Building configuration...
Current configuration : 1276 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname S1
!
boot-start-marker
boot-end-marker
!
no aaa new-model
memory-size iomem 5
!
ip cef
no ip domain lookup
!
interface FastEthernet0/0
no switchport
ip address 172.16.1.2 255.255.255.0
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface Vlan1
no ip address
!
interface Vlan10
ip address 192.168.10.1 255.255.255.0
vrrp 1 ip 192.168.10.254
vrrp 1 priority 200
!
interface Vlan20
ip address 192.168.20.1 255.255.255.0
vrrp 2 ip 192.168.20.254
!
router rip
version 2
network 172.16.0.0
network 192.168.10.0
network 192.168.20.0
no auto-summary
!
ip http server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end
S1#show ip route
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, su - IS-IS summary, 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
C 192.168.10.0/24 is directly connected, Vlan10
172.16.0.0/24 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, FastEthernet0/0
R 172.16.2.0 [120/1] via 172.16.1.1, 00:00:10, FastEthernet0/0
C 192.168.20.0/24 is directly connected, Vlan20
10.0.0.0/24 is subnetted, 1 subnets
R 10.10.10.0 [120/1] via 172.16.1.1, 00:00:10, FastEthernet0/0
S1#show vrrp
Vlan10 - Group 1
State is Master
Virtual IP address is 192.168.10.254
Virtual MAC address is 0000.5e00.0101
Advertisement interval is 1.000 sec
Preemption enabled
Priority is 200
Master Router is 192.168.10.1 (local), priority is 200
Master Advertisement interval is 1.000 sec
Master Down interval is 3.218 sec
Vlan20 - Group 2
State is Backup
Virtual IP address is 192.168.20.254
Virtual MAC address is 0000.5e00.0102
Advertisement interval is 1.000 sec
Preemption enabled
Priority is 100
Master Router is 192.168.20.2, priority is 200
Master Advertisement interval is 1.000 sec
Master Down interval is 3.609 sec (expires in 2.849 sec)
S1#


S2上配置内容
S2#show run
Building configuration...
Current configuration : 1348 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname S2
!
boot-start-marker
boot-end-marker
!
no aaa new-model
memory-size iomem 5
!
ip cef
no ip domain lookup
!
interface FastEthernet0/0
no switchport
ip address 172.16.2.2 255.255.255.0
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
,ysl heels!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface Vlan1
no ip address
!
interface Vlan10
ip address 192.168.10.2 255.255.255.0
vrrp 1 ip 192.168.10.254
!
interface Vlan20
ip address 192.168.20.2 255.255.255.0
vrrp 2 ip 192.168.20.254
vrrp 2 priority 200
!
router rip
version 2
network 172.16.0.0
network 192.168.1.0
network 192.168.2.0
no auto-summary
!
ip http server
!
mac-address-table static 0000.5e00.0102 interface FastEthernet0/1 vlan 20
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end
S2#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile,graphic tees, 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, su - IS-IS summary, 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
C 192.168.10.0/24 is directly connected, Vlan10
172.16.0.0/24 is subnetted, 2 subnets
R 172.16.1.0 [120/1] via 172.16.2.1, 00:00:23, FastEthernet0/0
C 172.16.2.0 is directly connected, FastEthernet0/0
C 192.168.20.0/24 is directly connected, Vlan20
10.0.0.0/24 is subnetted, 1 subnets
R 10.10.10.0 [120/1] via 172.16.2.1, 00:00:23, FastEthernet0/0
S2#show vrrp
Vlan10 - Group 1
State is Backup
Virtual IP address is 192.168.10.254
Virtual MAC address is 0000.5e00.0101
Advertisement interval is 1.000 sec
Preemption enabled
Priority is 100
Master Router is 192.168.10.1, priority is 200
Master Advertisement interval is 1.000 sec
Master Down interval is 3.609 sec (expires in 2.825 sec)
Vlan20 - Group 2
State is Master
Virtual IP address is 192.168.20.254
Virtual MAC address is 0000.5e00.0102
Advertisement interval is 1.000 sec
Preemption enabled
Priority is 200
Master Router is 192.168.20.2 (local), priority is 200
Master Advertisement interval is 1.000 sec
Master Down interval is 3.218 sec
S2#

S3上配置内容
S3#show run
Building configuration...
Current configuration : 1007 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname S3
!
boot-start-marker
boot-end-marker
!
no aaa new-model
memory-size iomem 5
!
ip cef
no ip domain lookup
!
interface FastEthernet0/0
switchport mode trunk
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
switchport access vlan 10
!
interface FastEthernet0/15
switchport access vlan 20
!
interface Vlan1
no ip address
!
ip http server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end
S3#



在实验中很明显可以看到
S1为Vlan10的Master，S1为Vlan20的backup
S2为Vlan20的Master，S2为Vlan10的backup

如果将S1的F0/1 shutdown，可以发现
S2立即成为VLAN10、VLAN20的Master

如果将S2的F0/1 shutdown，可以发现
S1立即成为VLAN10、VLAN20的Master
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