小综合：VLAN+STP+HSRP+路由
配置思路：
1、分析项目需求
2、项目实施
-配置终端
PC： 192.168.10.1/24 ---- 192.168.10.254
PC： 192.168.20.1/24 ---- 192.168.20.254
PC： 192.168.30.1/24 ---- 192.168.30.254
PC： 192.168.40.1/24 ---- 192.168.40.254
-配置网络
-接入层交换机(switch) - SW3
#创建vlan
vlan batch 10 20 30 40
#配置端口模式
interface gi0/0/3
port link-type access
port default vlan 10
interface gi0/0/4
port link-type access
port default vlan 20
interface gi0/0/5
port link-type access
port default vlan 30
interface gi0/0/6
port link-type access
port default vlan 40
port-group group-member gi0/0/12 to gi0/0/13
port link-type trunk
port trunk allow-pass vlan all
#放入指定的VLAN或者形成Trunk
-核心交换机(switch/route)
#创建VLAN
SW2/3:
vlan batch 10 20 30 40
#配置端口模式，形成trunk
SW2:
interface gi0/0/12
port link-type trunk
port trunk allow-pass vlan all
SW3:
interface gi0/0/13
port link-type trunk
port trunk allow-pass vlan all
#启用路由功能-SW2/3
ip routing
#配置网关IP地址
SW2:
interface vlanif 10
undo shutdown
ip address 192.168.10.100 255.255.255.0
interface vlanif 20
undo shutdown
ip address 192.168.20.100 255.255.255.0
interface vlanif 30
undo shutdown
ip address 192.168.30.100 255.255.255.0
interface vlanif 40
undo shutdown
ip address 192.168.40.100 255.255.255.0
SW3:
interface vlanif 10
undo shutdown
ip address 192.168.10.200 255.255.255.0
interface vlanif 20
undo shutdown
ip address 192.168.20.200 255.255.255.0
interface vlanif 30
undo shutdown
ip address 192.168.30.200 255.255.255.0
interface vlanif 40
undo shutdown
ip address 192.168.40.200 255.255.255.0
#配置网关冗余 - VRRP
SW2：VLAN10/20的主，VLAN30/40的辅
interface vlanif 10
vrrp vrid 10 virtual-ip 192.168.10.254
vrrp vrid 10 priority 150
interface vlanif 20
vrrp vrid 10 virtual-ip 192.168.20.254
vrrp vrid 10 priority 150
interface vlanif 30
vrrp vrid 10 virtual-ip 192.168.30.254
interface vlanif 40
vrrp vrid 10 virtual-ip 192.168.40.254
SW3：VLAN10/20的辅，VLAN30/40的主
interface vlanif 10
vrrp vrid 10 virtual-ip 192.168.10.254
interface vlanif 20
vrrp vrid 10 virtual-ip 192.168.20.254
vrrp vrid 10 priority 150
interface vlanif 30
vrrp vrid 10 virtual-ip 192.168.30.254
vrrp vrid 10 priority 150
interface vlanif 40
vrrp vrid 10 virtual-ip 192.168.40.254
vrrp vrid 10 priority 150
-验证测试
display vrrp
ping x.x.x.x
-优化
链路跟踪-上行链路跟踪技术
VRRP/HSRP 主网关，可以跟踪上行链路的状态，
如果端口 down ，则会主动降低自己的优先级，
以确保 备网关，可以立刻升为 主网关。
#配置：
interface vlanif 10
vrrp vrid 10 track interface gi0/0/1 reduce 100 ;
3、项目验收
4、项目复盘
企业网络的经典组网架构： 核心层 - 负责全网数据的转发交换 汇聚层 - 是实现网络中的策略配置(可选) 接入层 - 仅仅是作为终端设备的接入；
