HSRP(cisco) 和VRRP(通用) 是最常用的网关冗余技术,HSRP 和VRRP 类似,由多个路由器
共同组成一个组,虚拟出一个网关,其中的一台路由器处于活动状态,当它故障时由备份路
由器接替它的工作,从而实现对用户透明的切换。然而我们希望在冗余的同时,能同时实现
负载平衡,以充分利用设备的能力,GLBP (cisco)同时提供了冗余和负载平衡的能力。
配置步骤大致如下:
做好相关端口配置,设置好追踪,设置网关组,根据不同流量设置相应网关,设置不同优先级实现相互分流和替用。
hsrp
router a:
interface f0/0
no shut
ip add 192.168.0.1 255.255.255.0
standby 1 ip 192.168.0.254
standby 1 preempt
standby 1 priority 120
standby 1 track f0/1 30
standby 1 authentication md5 key-string cisco
standby 2 ip 192.168.0.253
standby 2 preempt
standby 2 authentication md5 key-string cisco
router b:
interface f0/0
no shut
ip address 192.168.0.2 255.255.255.0
standby 1 ip 192.168.0.254
standby 1 preempt
standby 1 authentication md5 key-string cisco
standby 2 ip 192.168.0.253
standby 2 authentication md5 key-string cisco
standby 2 priotiry 120
standby 2 track f0/1 30
vrrp
router a:
track 100 interface f0/1 line-protocol
interface f0/0
vrrp 1 ip 192.168.0.254
vrrp 1 priority 120
vrrp 1 preempt
vrrp 1 authentication md5 key-string cisco
vrrp 1 track 100 decrement 30
vrrp 2 ip 192.168.0.253
vrrp 2 preempt
vrrp 2 authentication md5 key-string cisco
router b:
track 100 interface f0/0 line-protocol
interface f0/0
vrrp 1 ip 192.168.0.254
vrrp 1 preempt
vrrp 1 authentication key-string cisco
vrrp 2 ip 192.168.0.253
vrrp 2 preempt
vrrp 2 priority 120
vrrp 2 track 100 decrement 30
vrrp 2 authentication md5 key-string cisco
router a:
int f0/0
glbp 1 ip 192.168.1.254
glbp 1 priority 200
glbp 1 preempt
glbp 1 authentication md5 key-string cisco
router b:
int f0/0
glbp 1 ip 192.168.1.254
glbp 1 priority 180
glbp 1 preempt
glbp 1 authentication md5 key-string cisco
这样,可以实现网关冗余与负载均衡。