网关冗余和负载均衡VRRP.docx
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网关冗余和负载均衡VRRP
网关冗余和负载均衡VRRP
一、交换机SW1（R6）交换机SW2（R4）配置
R6>enable
R6#conft
R6（config）#hostnameSW1
SW1（config）#intfa0/0
SW1（config-if）#noshutdown
SW1（config-if）#exit
SW1（config）#intfa0/1
SW1（config-if）#noshutdown
SW1（config-if）#exit
SW1（config）#intfa0/2
SW1（config-if）#noshutdown
SW1（config-if）#exit
SW1#vlandatabase
SW1（vlan）#vlan2
VLAN2added:
Name:
VLAN0002
SW1（vlan）#exit
SW1#conft
SW1（config）#intrangefa0/0-2
SW1（config-if-range）#switchportaccessvlan2
SW1（config-if-range）#exit
SW1（config-if-range）#exit
SW1（config）#intvlan2
SW1（config-if）#ipadd192.168.13.2255.255.255.0
SW1（config-if）#noshutdown
SW1（config-if）#exit
SW1（config）#exit
SW1#
R4>enable
R4#conft
R4（config）#hostSW2
SW2（config）#intfa0/1
SW2（config-if）#noshutdown
SW2（config-if）#exit
SW2（config）#intf0/0
SW2（config-if）#noshutdown
SW2（config-if）#exit
SW2（config）#exit
SW2#vlandatabase
SW2（vlan）#vlan2
VLAN2added:
Name:
VLAN0002
SW2（vlan）#exit
SW2#conft
SW2（config）#intrangefa0/0-1
SW2（config-if-range）#switchportaccessvlan2
SW2（config-if-range）#end
SW2#
二、配置PC1（R7）PC2（R5）
R7>enable
R7#conft
R7（config）#hostPC1
PC1（config）#noiprouting
PC1（config）#inte0/0
PC1（config-if）#ipadd192.168.13.100255.255.255.0
PC1（config-if）#noshutdown
PC1（config-if）#exit
PC1（config）#ipdefault-gateway192.168.13.2
PC1（config）#exit
PC1#
R5>enable
R5#conft
R5（config）#hostPC2
PC2（config）#noiprouting
PC2（config）#inte0/0
PC2（config-if）#ipadd192.168.20.100255.255.255.0
PC2（config-if）#noshutdown
PC2（config-if）#exit
PC2（config）#ipdefault-gateway192.168.20.2
三、对路由器进行基本配置
R1#conft
R1（config）#inte0/0
R1（config-if）#ipadd192.168.13.1255.255.255.0
R1（config-if）#noshutdown
R1（config-if）#exit
R1（config）#ints1/0
R1（config-if）#ipadd192.168.12.1255.255.255.0
R1（config-if）#noshutdown
R1（config-if）#exit
R1（config）#
R2>enable
R2#conft
R2（config）#ints1/0
R2（config-if）#ipadd192.168.12.2255.255.255.0
R2（config-if）#clockrate128000
R2（config-if）#noshutdown
R2（config-if）#exit
R2（config）#ints1/1
R2（config-if）#ipadd192.168.23.2255.255.255.0
R2（config-if）#clockrate128000
R2（config-if）#noshutdown
R2（config-if）#exit
R2（config）#inte0/0
R2（config-if）#ipadd192.168.20.2255.255.255.0
R2（config-if）#noshutdown
R2（config-if）#exit
R2（config）#exit
R2#
R3>enable
R3#conft
R3（config）#ints1/0
R3（config-if）#ipadd192.168.23.3255.255.255.0
R3（config-if）#noshutdown
R3（config）#inte0/0
R3（config-if）#ipadd192.168.13.3255.255.255.0
R3（config-if）#noshutdown
R3（config-if）#exit
R3（config）#
四、配置路由协议
R1#conft
R1（config）#routerrip
R1（config-router）#net192.168.12.0
R1（config-router）#net192.168.13.0
R1（config-router）#passive-interfacee0/0
//把e0/0接口设为被接口，为了防止从该接口发送RIP信息给R3
R1（config-router）#exit
R1（config）#exit
R1#
R2#conft
R2（config）#routerrip
R2（config-router）#net192.168.12.0
R2（config-router）#net192.168.23.0
R2（config-router）#net192.168.20.0
R2（config-router）#passive-interfacee0/0
R2（config-router）#exit
R2（config）#exit
R2#
R3#conft
R3（config）#routerrip
R3（config-router）#net192.168.13.0
R3（config-router）#net192.168.23.0
R3（config-router）#passive-interfacee0/0
R3（config-router）#exit
R3（config）#exit
R3#
五、查看路由表
R1#shiproute
Codes:
C-connected,S-static,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterarea
N1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2
E1-OSPFexternaltype1,E2-OSPFexternaltype2
i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2
ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticroute
o-ODR,P-periodicdownloadedstaticroute
Gatewayoflastresortisnotset
C192.168.12.0/24isdirectlyconnected,Serial1/0
C192.168.13.0/24isdirectlyconnected,Ethernet0/0
R192.168.20.0/24[120/1]via192.168.12.2,00:
00:
28,Serial1/0
R192.168.23.0/24[120/1]via192.168.13.3,00:
01:
12,Ethernet0/0
[120/1]via192.168.12.2,00:
00:
06,Serial1/0
R1#
前后对比
R1#shiproute
Codes:
C-connected,S-static,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterarea
N1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2
E1-OSPFexternaltype1,E2-OSPFexternaltype2
i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2
ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticroute
o-ODR,P-periodicdownloadedstaticroute
Gatewayoflastresortisnotset
C192.168.12.0/24isdirectlyconnected,Serial1/0
C192.168.13.0/24isdirectlyconnected,Ethernet0/0
R192.168.20.0/24[120/1]via192.168.12.2,00:
00:
28,Serial1/0
R192.168.23.0/24[120/1]via192.168.12.2,00:
00:
02,Serial1/0
R1#
R2#shiproute
Codes:
C-connected,S-static,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterarea
N1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2
E1-OSPFexternaltype1,E2-OSPFexternaltype2
i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2
ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticroute
o-ODR,P-periodicdownloadedstaticroute
Gatewayoflastresortisnotset
C192.168.12.0/24isdirectlyconnected,Serial1/0
R192.168.13.0/24[120/1]via192.168.23.3,00:
00:
17,Serial1/1
[120/1]via192.168.12.1,00:
00:
14,Serial1/0
C192.168.20.0/24isdirectlyconnected,Ethernet0/0
C192.168.23.0/24isdirectlyconnected,Serial1/1
R2#
R3#shiproute
Codes:
C-connected,S-static,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterarea
N1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2
E1-OSPFexternaltype1,E2-OSPFexternaltype2
i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2
ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticroute
o-ODR,P-periodicdownloadedstaticroute
Gatewayoflastresortisnotset
R192.168.12.0/24[120/1]via192.168.23.2,00:
00:
16,Serial1/0
C192.168.13.0/24isdirectlyconnected,Ethernet0/0
R192.168.20.0/24[120/1]via192.168.23.2,00:
00:
12,Serial1/0
C192.168.23.0/24isdirectlyconnected,Serial1/0
R3#
五、测试
R1#ping192.168.20.100
Typeescapesequencetoabort.
Sending5,100-byteICMPEchosto192.168.20.100,timeoutis2seconds:
!
!
!
!
!
Successrateis100percent（5/5）,round-tripmin/avg/max=60/80/120ms
R1#
六、配置多个VRRP组
R1#conft
R1（config）#track100ints1/0line-protocol//定义跟踪目标
R1（config-track）#exit
R1（config）#inte0/0
R1（config-if）#vrrp1ip192.168.13.254
R1（config-if）#vrrp1priority120
R1（config-if）#vrrp1preempt
R1（config-if）#vrrp1authenticationmd5key-stringcisco//命令不存在
R1（config-if）#vrrp1track100decrement30
R1（config-if）#vrrp2ip192.168.13.253
R1（config-if）#vrrp2preempt
R1（config-if）#vrrp2authenticationmd5key-stringcisco
R1（config-if）#
R3#conft
R3（config）#track100ints1/0line-protocol
R3（config-track）#exit
R3（config）#inte0/0
R3（config-if）#vrrp1ip192.168.13.2
R3（config-if）#vrrp1preempt
R3（config-if）#vrrp1authenticationmd5key-stringcisco
R3（config-if）#vrrp2ip192.168.13.253
R3（config-if）#vrrp2priority120
R3（config-if）#vrrp2preempt
R3（config-if）#vrrp2authenticationmd5key-stringcisco
R3（config-if）#vrrp3track100decrement30
R3（config-if）#exit
R3（config）#exit
R3#
七、查看VRRP
R1#shvrrpbrief
InterfaceGrpPriTimeOwnPreStateMasteraddrGroupaddr
Et0/011203531YMaster192.168.13.1192.168.13.254
Et0/021003609YBackup192.168.13.3192.168.13.253
R1#
R3#shvrrpbrief
InterfaceGrpPriTimeOwnPreStateMasteraddrGroupaddr
Et0/011003609YBackup192.168.13.1192.168.13.254
Et0/021203531YMaster192.168.13.3192.168.13.253
R3#
八、检测查看VRRP
R1#conft
Enterconfigurationcommands,oneperline.EndwithCNTL/Z.
R1（config）#ints1/0
R1（config-if）#shutdown
R1（config-if）#exit
R1（config）#exit
R1#shvrrpbrief
InterfaceGrpPriTimeOwnPreStateMasteraddrGroupaddr
Et0/01903531YBackup192.168.13.3192.168.13.254
Et0/021003609YBackup192.168.13.3192.168.13.253
R1#
R3#shvrrpbrief
InterfaceGrpPriTimeOwnPreStateMasteraddrGroupaddr
Et0/011003609YMaster192.168.13.3192.168.13.254
Et0/021203531YMaster192.168.13.3192.168.13.253
R3#
R1#conft
R1（config）#ints1/0
R1（config-if）#noshutdown
R1（config-if）#exit
R1（config）#exit
R1#shvrrpbrief
InterfaceGrpPriTimeOwnPreStateMasteraddrGroupaddr
Et0/011203531YMaster192.168.13.1192.168.13.254
Et0/021003609YBackup192.168.13.3192.168.13.253
R1#
R3#shvrrpbrief
InterfaceGrpPriTimeOwnPreStateMasteraddrGroupaddr
Et0/011003609YBackup192.168.13.1192.168.13.254
Et0/021203531YMaster192.168.13.3192.168.13.253
R3#
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