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AR路由器/SRG路由器BFD和VRRP联动的配置方法
更新时间：2022-09-09
配置VRRP负载分担以及与BFD的联动，实现业务快速切换并检测上行链路的示例
规格
适用于所有版本、所有形态的AR路由器。
组网需求
如图1所示，某公司网络中RouterA和RouterB为直连设备，下行连接一台交换机设备。用户希望对网络中的四种业务：上网、邮件、视频及核心业务进行分路，即上网和邮件业务从RouterA出去，视频和核心业务从RouterB出去。当RouterA和RouterB中的任意一个设备链路down的时候，这四种业务都快速切换到另一台Router上。
图1 配置VRRP负载分担+track bfd组网图
操作步骤
1.RouterA的配置
#
sysname RouterA
#
acl number 3100
rule 5 permit ip destination 1.1.1.3 0
#
bfd
#
traffic classifier 0 operator or
if-match acl 3100
#
traffic behavior 0
redirect ip-nexthop 192.168.2.253 track nqa internet icmp //配置策略路由和NQA联动
#
traffic policy 0
classifier 0 behavior 0
#
ip pool 1
gateway-list 192.168.0.2
network 192.168.0.0 mask 255.255.255.0
#
interface Vlanif1
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.1
vrrp vrid 1 priority 90
vrrp vrid 1 track bfd-session 20 increased 20 //VRRP和BFD联动实现快速切换
vrrp vrid 2 virtual-ip 192.168.0.2 //主备备份组1和主备备份组2实现负载分担
vrrp vrid 2 track bfd-session 20 reduced 20
traffic-policy 0 inbound //策略路由实现区分业务
dhcp select global
#
interface GigabitEthernet0/0/0
ip address 1.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.2.254 255.255.255.0
#
bfd vrrp bind peer-ip 192.168.0.254 interface Vlanif1 //检测VRRP通过交换机相连链路质量
discriminator local 20
discriminator remote 10
commit
#
nqa test-instance internet icmp //RouterA通过NQA检测通往RouterB网关的链路
test-type icmp
destination-address ipv4 2.2.2.1
frequency 12
timeout 1
start now
#
ip route-static 2.2.2.0 255.255.255.0 192.168.2.253
ip route-static 0.0.0.0 0.0.0.0 1.1.1.1
#
return
2.RouterB的配置
#
sysname RouterB
#
acl number 3100
rule 5 permit ip destination 2.2.2.1 0
#
bfd
#
traffic classifier 0 operator or
if-match acl 3100
#
traffic behavior 0
redirect ip-nexthop 192.168.2.254 track nqa internet icmp //配置策略路由和NQA联动
#
traffic policy 0
classifier 0 behavior 0
#
ip pool 1
gateway-list 192.168.0.1
network 192.168.0.0 mask 255.255.255.0
#
interface Vlanif1
ip address 192.168.0.254 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.1
vrrp vrid 1 track bfd-session 10 reduced 20
vrrp vrid 2 virtual-ip 192.168.0.2 //主备备份组1和主备备份组2实现负载分担
vrrp vrid 2 priority 90
vrrp vrid 2 track bfd-session 10 increased 20 //VRRP和BFD联动实现快速切换
traffic-policy 0 inbound //策略路由实现区分业务
dhcp select global
#
interface GigabitEthernet0/0/0
ip address 2.2.2.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 192.168.2.253 255.255.255.0 //配置RouterB的接口IP地址
#
bfd vrrp bind peer-ip 192.168.0.253 interface Vlanif1 //检测VRRP通过交换机相连的链路质量
discriminator local 10
discriminator remote 20
commit
#
nqa test-instance internet icmp //RouterB通过NQA检测通往RouterA网关的链路
test-type icmp
destination-address ipv4 1.1.1.1
frequency 12
timeout 1
start now
#
ip route-static 1.1.1.0 255.255.255.0 192.168.2.254
ip route-static 0.0.0.0 0.0.0.0 2.2.2.1 //配置静态路由使路由互通
#
return