基于路由器的VRRP技术--VRRP的应用
目录
今天要讲的VRRP都是基于路由器的VRRP。
一：无Vlan的VRRP
如图，PC1和PC2是企业内网主机，AR1和AR2是企业访问外网的路由器，有一个默认路由指向AR3。AR1和AR2之间形成第一跳网关冗余。PC1通过AR1以NAT方式访问外网，PC2通过AR2以NAT方式访问外网。AR1、AR2之间任何一个路由器宕机都不影响PC1和PC2访问外网。AR1、AR2、AR3之间运行OSPF协议。
技术要点：AR1和AR2的g0/0/0接口配置两个ip地址，再结合VRRP技术
PC1
PC>ipconfig
IPv4 address......................: 192.168.10.10
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.10.254
Physical address..................: 54-89-98-8E-41-17PC2
PC>ipconfig
IPv4 address......................: 192.168.10.10
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.10.254
Physical address..................: 54-89-98-8E-41-17AR1
[AR1]display current-configuration
#
acl number 2000 //匹配需要NAT的网段
rule 5 permit source 192.168.10.0 0.0.0.255
rule 10 permit source 192.168.20.0 0.0.0.255
#
interface GigabitEthernet0/0/0
ip address 192.168.10.1 255.255.255.0
ip address 192.168.20.1 255.255.255.0 sub //一个接口配两个地址
vrrp vrid 10 virtual-ip 192.168.10.254
vrrp vrid 10 priority 150 //设置优先级
vrrp vrid 10 preempt-mode timer delay 10 //抢占时间10秒
vrrp vrid 10 track interface GigabitEthernet0/0/1 reduced 60 //端口状态监测
vrrp vrid 10 authentication-mode md5 %$%$7_&c4,7Hl+O8!oBync[2o~1,%$%$ //认证
vrrp vrid 20 virtual-ip 192.168.20.254
vrrp vrid 20 authentication-mode md5 %$%$l,rF;gtS<J9zB}O1H:CMo~dG%$%$
#
interface GigabitEthernet0/0/1
ip address 13.1.1.1 255.255.255.0
nat outbound 2000 // NAT
#
ospf 100 router-id 13.1.1.1
area 0.0.0.0
network 13.1.1.1 0.0.0.0
#
ip route-static 0.0.0.0 0.0.0.0 13.1.1.3
#AR2
[AR2]display current-configuration
#
acl number 2000
rule 5 permit source 192.168.10.0 0.0.0.255
rule 10 permit source 192.168.20.0 0.0.0.255
#
interface GigabitEthernet0/0/0
ip address 192.168.10.2 255.255.255.0
ip address 192.168.20.2 255.255.255.0 sub
vrrp vrid 10 virtual-ip 192.168.10.254
vrrp vrid 10 authentication-mode md5 %$%$RcPz'1Xr;Gj1#=~x*hC5o@SW%$%$
vrrp vrid 20 virtual-ip 192.168.20.254
vrrp vrid 20 priority 150
vrrp vrid 20 preempt-mode timer delay 10
vrrp vrid 20 track interface GigabitEthernet0/0/1 reduced 60
vrrp vrid 20 authentication-mode md5 %$%$~B9v,^2%6KSZB4@WB#DTo@NI%$%$
#
interface GigabitEthernet0/0/1
ip address 23.1.1.2 255.255.255.0
nat outbound 2000
#
ospf 100 router-id 23.1.1.2
area 0.0.0.0
network 23.1.1.2 0.0.0.0
#
ip route-static 0.0.0.0 0.0.0.0 23.1.1.3
#AR3
[AR3]display current-configuration
#
interface GigabitEthernet0/0/0
ip address 13.1.1.3 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 23.1.1.3 255.255.255.0
#
ospf 100 router-id 33.3.3.3
area 0.0.0.0
network 13.1.1.3 0.0.0.0
network 23.1.1.3 0.0.0.0
#有Vlan的VRRP
如图，PC1和PC2是企业内网主机，分别属于Vlan10和Vlan20，AR1和AR2是企业访问外网的路由器，有一个默认路由指向AR3。AR1和AR2之间形成第一跳网关冗余。PC1通过AR1以NAT方式访问外网，PC2通过AR2以NAT方式访问外网。AR1、AR2之间任何一个路由器宕机都不影响PC1和PC2访问外网。AR1、AR2、AR3之间运行OSPF协议。
技术要点：AR1和AR2配置虚拟地址，再结合VRRP技术
PC1
PC>ipconfig
IPv4 address......................: 192.168.10.10
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.10.254
Physical address..................: 54-89-98-8E-41-17
Vlan..............................: 10PC2
PC>ipconfig
IPv4 address......................: 192.168.10.10
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.10.254
Physical address..................: 54-89-98-8E-41-17
Vlan..............................: 20LSW1
[LSW1]display current-configuration
#
vlan batch 10 20
#
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/3
port link-type access
port default vlan 10
#
interface GigabitEthernet0/0/4
port link-type access
port default vlan 20
#AR1
[AR1]display current-configuration
#
acl number 2000
rule 5 permit source 192.168.10.0 0.0.0.255
rule 10 permit source 192.168.20.0 0.0.0.255
#
interface GigabitEthernet0/0/0.10
dot1q termination vid 10 //使虚拟接口能识别Vlan10
ip address 192.168.10.1 255.255.255.0
vrrp vrid 10 virtual-ip 192.168.10.254
vrrp vrid 10 priority 150
vrrp vrid 10 preempt-mode timer delay 10
vrrp vrid 10 track interface GigabitEthernet0/0/1 reduced 60
vrrp vrid 10 authentication-mode md5 %$%$}'&x<I!T>,WFD'08G=yToU,o%$%$
arp broadcast enable //虚拟接口恩给你发送arp广播
#
interface GigabitEthernet0/0/0.20
dot1q termination vid 20 //使虚拟接口能识别Vlan20
ip address 192.168.20.1 255.255.255.0
vrrp vrid 20 virtual-ip 192.168.20.254
vrrp vrid 20 authentication-mode md5 %$%$<w9#Ez1k!~Y3+},DQtjGoUQ^%$%$
arp broadcast enable
#
interface GigabitEthernet0/0/1
ip address 13.1.1.1 255.255.255.0
nat outbound 2000
#
ospf 100 router-id 13.1.1.1
area 0.0.0.0
network 13.1.1.1 0.0.0.0
#
ip route-static 0.0.0.0 0.0.0.0 13.1.1.3
#AR2
[V200R003C00]
#
acl number 2000
rule 5 permit source 192.168.10.0 0.0.0.255
rule 10 permit source 192.168.20.0 0.0.0.255
#
interface GigabitEthernet0/0/0.10
dot1q termination vid 10
ip address 192.168.10.2 255.255.255.0
vrrp vrid 10 virtual-ip 192.168.10.254
vrrp vrid 10 authentication-mode md5 %$%$ei}p>OY2kXEOij8TquxQoV*0%$%$
arp broadcast enable
#
interface GigabitEthernet0/0/0.20
dot1q termination vid 20
ip address 192.168.20.2 255.255.255.0
vrrp vrid 20 virtual-ip 192.168.20.254
vrrp vrid 20 priority 150
vrrp vrid 20 preempt-mode timer delay 10
vrrp vrid 20 track interface GigabitEthernet0/0/1 reduced 60
vrrp vrid 20 authentication-mode md5 %$%$&G-7Us\hbQxS@vFhpdoRoV"8%$%$
arp broadcast enable
#
interface GigabitEthernet0/0/1
ip address 23.1.1.2 255.255.255.0
nat outbound 2000
#
ospf 100 router-id 23.1.1.2
area 0.0.0.0
network 23.1.1.2 0.0.0.0
#
ip route-static 0.0.0.0 0.0.0.0 23.1.1.3
#AR3
[AR3]display current-configuration
#
interface GigabitEthernet0/0/0
ip address 13.1.1.3 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 23.1.1.3 255.255.255.0
#
ospf 100 router-id 33.3.3.3
area 0.0.0.0
network 13.1.1.3 0.0.0.0
network 23.1.1.3 0.0.0.0
#附上存在Vlan时的ensp源文件：链接: https://pan.baidu.com/s/1S5xzALnyg8cmn_lTB_jd_w 密码: yez5
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