目录
网络调优,部署内网备份冗余和负载分担---实验
拓扑
需求
配置步骤:
配置命令:
网络调优,部署内网备份冗余和负载分担---实验
拓扑
需求
- 主机获取IP地址,访问WEB服务器,WEB服务器网关在SW5上
- SW5作为VLAN10,VLAN20的主网关,作为VLAN30,VLAN40的备网关;
- SW6作为VLAN30,VLAN40的主网关,作为VLAN10,VLAN20的备网关;
- SW5上的vlanif 地址为192.168.xx.251,虚拟网关为192.168.xx.254
- SW6上的vlanif 地址为192.168.xx.252,虚拟网关为192.168.xx.254
- SW5作为VLAN10,VLAN20,vlan88的主根,作为VLAN30,VLAN40,vlan66的备根;
- SW6作为VLAN30,VLAN40,vlan66的主根,作为VLAN10,VLAN20,vlan88的备根;
配置步骤:
- SW5和SW6中创建vlan88
- 所有的接入层交换机和SW5的互联的接口配置trunk
- SW5配置vlanif的管理地址,XX.251
- 配置VRRP主备网关,配置WEB服务器网关
- 配置SW5为DHCP中继
- 配置MSTP
配置命令:
第一步:SW5的基础配置: [SW5]vlan batch 10 20 30 40 66 88 [SW5]port-group group-member g0/0/1 to g0/0/4 g0/0/20 [SW5-port-group]port link-type trunk [SW5-port-group]port trunk allow-pass vlan all 第二步: 配置SW5的dhcp中继 [SW5]dhcp enable [SW5]int vlan 10 [SW5-Vlanif10]ip add 192.168.10.251 24 [SW5-Vlanif10]dhcp select relay [SW5-Vlanif10]dhcp relay server-ip 192.168.66.1 [SW5-Vlanif10]int vlan 20 [SW5-Vlanif20]ip add 192.168.20.251 24 [SW5-Vlanif20]dhcp select relay [SW5-Vlanif20]dhcp relay server-ip 192.168.66.1 [SW5-Vlanif20]int vlan 30 [SW5-Vlanif30]ip add 192.168.30.251 24 [SW5-Vlanif30]dhcp select relay [SW5-Vlanif30]dhcp relay server-ip 192.168.66.1 [SW5-Vlanif30]int vlan 40 [SW5-Vlanif40]ip add 192.168.40.251 24 [SW5-Vlanif40]dhcp select relay [SW5-Vlanif40]dhcp relay server-ip 192.168.66.1 [SW5-Vlanif40]quit [SW5]int vlan 66 [SW5-Vlanif66]ip address 192.168.66.253 24 [SW5-Vlanif66]int vlan 88 [SW5-Vlanif88]ip add 192.168.88.254 24 第三步:所有的交换机中都配置MSTP 1) 在所有的交换机中复制粘贴,不要手写命令,不要手写命令 stp region-configuration region-name ntd2304 instance 1 vlan 10 20 instance 2 vlan 30 40 active region-configuration 2)在SW5中配置主根和备根 把SW5做成实例1(vlan10和vlan20)的主根 把SW5做成实例2(vlan30和vlan40)的备根 把SW5做成实例0(其余所有vlan)的主根 [SW5]stp instance 1 priority 4096 [SW5]stp instance 2 priority 8192 [SW5]stp instance 0 priority 4096 3)在SW6中配置主根和备根 把SW6做成实例1(vlan10和vlan20)的备根 把SW6做成实例2(vlan30和vlan40)的主根 把SW6做成实例0(其余所有vlan)的备根 [SW6]stp instance 1 priority 8192 [SW6]stp instance 2 priority 4096 [SW6]stp instance 0 priority 8192 第四步:配置VVRP 1)SW5配置VRRP-成为vlan10和vlan20的master SW5配置VRRP-成为vlan30和vlan40的backup [SW5-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.254 [SW5-Vlanif10]vrrp vrid 10 priority 160 [SW5-Vlanif10]int vlan 20 [SW5-Vlanif20]vrrp vrid 20 virtual-ip 192.168.20.254 [SW5-Vlanif20]vrrp vrid 20 priority 160 [SW5-Vlanif20]int vlan 30 [SW5-Vlanif30]vrrp vrid 30 virtual-ip 192.168.30.254 [SW5-Vlanif30]int vlan 40 [SW5-Vlanif40]vrrp vrid 40 virtual-ip 192.168.40.254 备注:如果写错:删除 [SW5-Vlanif20]int vlan 30 [SW5-Vlanif30]undo vrrp vird 40 2)SW6配置VRRP-成为vlan30和vlan40的master SW6配置VRRP-成为vlan10和vlan20的backup [SW6]int vlan 10 [SW6-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.254 [SW6-Vlanif10]int vlan 20 [SW6-Vlanif20]vrrp vrid 20 virtual-ip 192.168.20.254 [SW6-Vlanif20]int vlan 30 [SW6-Vlanif30]vrrp vrid 30 virtual-ip 192.168.30.254 [SW6-Vlanif30]vrrp vrid 30 priority 160 [SW6-Vlanif30]int vlan 40 [SW6-Vlanif40]vrrp vrid 40 virtual-ip 192.168.40.254 [SW6-Vlanif40]vrrp vrid 40 priority 160 备注:在SW6中配置vlan88的管理IP地址 [SW6]vlan 88 [SW6-vlan88]quit [SW6]int vlan 88 [SW6-Vlanif88]ip address 192.168.88.6 24 备注: 配置完MSTP和VRRP后, 主机可以正常获取IP地址吗? 如果不能,为什么??? 如何排错? 请思考: 2个小坑,辛苦各位填满 为什么呢? 因为SW5 和DHCP不能互通,三层有直连路由,但是不能互通,那么我们去查二层 1)抓包-分析 2)display port vlan 查看端口的状态和允许通过的vlan 通过抓包分析,发现SW5的5条链路,都无法发包, 使用display port vlan 发现 SW5的5条链路都没有做trunk ,都没有允许vlan通过 解决方案:给SW1/SW2/SW3/SW4的g0/0/11接口配置trunk ,允许vlan通过 给SW6的g0/0/20 接口配置trunk ,允许vlan通过 [SW6]int g0/0/20 [SW6-G0/0/20]port link-type trunk [SW6-G0/0/20]port trunk allow-pass vlan all [SW4]int g0/0/11 [SW4-G0/0/11]port link-type trunk [SW4-G0/0/11]port trunk allow-pass vlan all [SW3]int g0/0/11 [SW3-G0/0/11]port link-type trunk [SW3-G0/0/11]port trunk allow-pass vlan all [SW2]int g0/0/11 [SW2-G0/0/11]port link-type trunk [SW2-G0/0/11]port trunk allow-pass vlan all [SW1]int g0/0/11 [SW1-G0/0/11]port link-type trunk [SW1-G0/0/11]port trunk allow-pass vlan all 备注:PC可以访问server服务器吗? PC 能ping 通192.168.88.1 1)确认sw5 配置了vlanif88的IP地址 [SW5-Vlanif66]int vlan 88 [SW5-Vlanif88]ip add 192.168.88.254 24 2)确认sw6创建了vlan88 ,并配置了vlanif 88的IP地址 [SW6]vlan 88 [SW6-vlan88]quit [SW6]int vlan 88 [SW6-Vlanif88]ip address 192.168.88.6 24 3)确认SW5的g0/0/8口,改为了access 并且加入了vlan88 [SW5]int g0/0/8 [SW5-GigabitEthernet0/0/8]port lin [SW5-GigabitEthernet0/0/8]port link-type access [SW5-GigabitEthernet0/0/8]port default vlan 88