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分类: 系统运维

2006-05-30 17:03:49

配置三层交换的综合案例

 网络基本情况

  网络拓扑结构为:中心交换机采用Cisco Catalyst 4006-S3,

  Supervisor Engine III G引擎位于第1插槽,用于实现三层交换;1块24口

  1000Base-T模块位于第2插槽,用于连接网络服务器;1块6端口1000Base-X模块位

  于第3插槽,用于连接6台骨干交换机。一台交换机采用Cisco Catalyst 3550-

  24-EMI,并安装1块1000Base-X GBIC千兆模块。一台交换机采用Cisco

  Catalyst 3550-24-SMI,也安装1块1000Base-X GBIC千兆模块。另外四台交换机

  采用Cisco Catalyst 2950G-24-SMI,安装1块1000Base-T GBIC千兆模块。

  所有服务器划分为一个VLAN,即VLAN 50。四台Catalyst 2950G-24-SMI交换机也只划分为一个VLAN,分别为VLAN 60、VLAN 70、VLAN 80和VLAN 90。

  Catalyst 3550-24-EMI划分为4个VLAN,分别为VLAN 10、VLAN 20、VLAN 30和

  VLAN 40。Catalyst 3550-24-SMI划分2个VLAN,分别为VLAN 60和VLAN 80,与另

  外两台Catalyst 2950G-24-SMI交换机分别位于同一VLAN。


  ***************************实例分析****************************

  由于所有Catalyst 2950G交换机都是一个独立的VLAN,因此,必须先在

  这些交换机上创建VLAN(VLAN 60~VLAN 90),并将所有端口都指定至该VLAN。然

  后,再在Catalyst 4006交换机相应端口上分别创建VLAN。Catalyst 4006的

  1000Base-X端口分别与各Catalyst 2950G的1000Base-X端口连接。其中,

  GigabitEthernet3/2端口连接至1号Catalyst 2950交换机(VLAN 60),GigabitEthernet3/3端口连接至2号Catalyst 2950交换机(VLAN 70),GigabitEthernet3/4端口连接至3号Catalyst 2950交换机(VLAN 80),GigabitEthernet3/5端口连接至4号Catalyst 2950交换机(VLAN 90),GigabitEthernet3/6端口连接至6号楼交换机(VLAN 80)。




  由于在Catalyst 3550-24-EMI上划分有4个VLAN(VLAN 10~VLAN 40),而4个VLAN都需借助于一条1000Base-X链路实现与Catalyst 4006的GigabitEthernet3/1端口连接,因此,必须在Catalyst 4006与Catalyst 3550-24- EMI之间创建一个Trunk。

  同样,在Catalyst 3550-24-SMI上划分有2个VLAN(VLAN 60和VLAN 80),而4个VLAN都需借助于一条1000Base-X链路实现与Catalyst 4006的GigabitEthernet3/6端口连接,因此,必须在Catalyst 4006与Catalyst 3550-24- EMI之间创建一个Trunk。

  另外,所有服务器均连接至Catalyst 4006的1000Base-T模块,并单独成为一个VLAN(VLAN 90),因此,也必须为这些交换机创建一个VLAN,并将所有端口指定至该VLAN。需要注意的是,考虑到网络管理的需要,也可以剩余几个RJ-45端口(如21至24端口)不指定至任何VLAN,从而便于连接网络管理设备。默认状态下,所有端口都属于VLAN1,而且也只有在VLAN1中才能实现对网络中所有设备的管理。



  ***************************配置清单******************************


  ●Cisco Catalyst 4006交换机配置清单
  Current configuration : 5594 bytes
  !
  version 12.1
  no service pad
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  service compress-config
  !
  hostname hsnc
  !
  boot system bootflash:cat4000-is-mz.121-8a.EW1.bin
  no logging console
  enable secret level 1 5 $1$rkQW$1HKyKdN5f.Ri5zxeoF8Yv/
  !
  ip subnet-zero
  !
  !
  !
  interface GigabitEthernet1/1
  no snmp trap link-status
  !--不为Supervisor Engine III G引擎中的1000Base-X插槽指定VLAN
  interface GigabitEthernet1/2
  no snmp trap link-status
  !
  !
  interface GigabitEthernet2/1
  switchport access vlan 50
  no snmp trap link-status
  !--将端口GigabitEthernet2/1指定至VLAN 50
  !
  interface GigabitEthernet2/2
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/3
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/4
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/5
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/6
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/7
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/8
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/9
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/10
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/11
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/12
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/13
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/14
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/15
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/16
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/17
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/18
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/19
  switchport access vlan 50
  no snmp trap link-status
  !
  interface GigabitEthernet2/20
  switchport access vlan 50
  no snmp trap link-status
  !--不将GigabitEthernet2/20~24指定至任何VLAN
  !



  interface GigabitEthernet3/1
  switchport trunk encapsulation dot1q
  !--启用802.1Q Trunk封装协议,即在该端口创建Trunk
  switchport trunk allowed vlan 1-80
  !--允许vlan 1-90在该中继线通讯
  !--可以拒绝或允许某个VLAN访问该Trunk
  !--确保未被授权的VLAN通过该Trunk,实现VLAN的访问安全
  switchport mode trunk
  !--将该端口设置为Trunk
  description netcenter
  no snmp trap link-status
  !
  interface GigabitEthernet3/2
  switchport access vlan 60
  no snmp trap link-status
  !--将端口GigabitEthernet3/2指定至VLAN 60
  !
  interface GigabitEthernet3/3
  switchport access vlan 70
  no snmp trap link-status
  !--将端口GigabitEthernet3/3指定至VLAN 70
  !
  interface GigabitEthernet3/4
  switchport access vlan 80
  no snmp trap link-status
  !--将端口GigabitEthernet3/4指定至VLAN 80
  !
  interface GigabitEthernet3/5
  switchport access vlan 90
  no snmp trap link-status
  !--将端口GigabitEthernet3/5指定至VLAN 90
  !
  interface GigabitEthernet3/6
  switchport trunk encapsulation dot1q
  !--启用802.1Q Trunk封装协议,即在该端口创建Trunk
  switchport trunk allowed vlan 1-80
  !--允许vlan 1-90在该中继线通讯
  !--可以拒绝或允许某个VLAN访问该Trunk
  !--从而确保未被授权的VLAN通过该Trunk,实现VLAN访问安全
  switchport mode trunk
  !--将该端口设置为Trunk
  description netcenter
  no snmp trap link-status
  !
  interface Vlan1
  description netmanger
  no ip address
  !
  !--对VLAN1进行描述
  interface Vlan10
  description network center
  no ip address
  !--对VLAN2进行描述
  !
  interface Vlan20
  description computer center
  no ip address
  !
  interface Vlan30
  description network lab
  no ip address
  !
  interface Vlan40
  description huaxuelou
  no ip address
  !
  interface Vlan50
  description wulilou
  no ip address
  !
  interface Vlan60
  description shengwulou
  no ip address
  !



  interface Vlan70
  description zhongwenxi
  no ip address
  !
  interface Vlan80
  description tushuguan
  no ip address
  !
  !
  line con 0
  stopbits 1
  line vty 0 4
  password aaa
  login
  !
  end

  ●Cisco Catalyst 3550-EMI配置清单
  Building configuration...

  Current configuration : 4055 bytes
  !
  version 12.1
  no service pad
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  !
  hostname office
  !
  enable secret 5 $1$p0fU$JeyPOM0RuL.Fqfe71efHF1
  !
  ip subnet-zero
  !
  !
  spanning-tree extend system-id
  !
  !
  !
  interface FastEthernet0/1
  switchport access vlan 10
  !--将端口FastEthernet0/1指定至VLAN 10
  no ip address
  !
  interface FastEthernet0/2
  switchport access vlan 10
  no ip address
  !
  interface FastEthernet0/3
  switchport access vlan 10
  no ip address
  !
  interface FastEthernet0/4
  switchport access vlan 10
  no ip address
  !
  interface FastEthernet0/5
  switchport access vlan 10
  no ip address
  !
  interface FastEthernet0/6
  switchport access vlan 20
  no ip address
  !--将端口FastEthernet0/6指定至VLAN 20
  !



  interface FastEthernet0/7
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/8
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/9
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/10
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/11
  switchport access vlan 30
  no ip address
  !--将端口FastEthernet0/6指定至VLAN 30
  !
  interface FastEthernet0/12
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/13
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/14
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/15
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/16
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/17
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/18
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/19
  switchport access vlan 40
  no ip address
  !--将端口FastEthernet0/6指定至VLAN 40
  !



  interface FastEthernet0/20
  switchport access vlan 40
  no ip address
  !
  interface FastEthernet0/21
  switchport access vlan 40
  no ip address
  !
  interface FastEthernet0/22
  switchport access vlan 30
  no ip address
  !
  interface FastEthernet0/23
  switchport access vlan 40
  no ip address
  !
  interface FastEthernet0/24
  switchport access vlan 40
  no ip address
  !
  interface GigabitEthernet0/1
  switchport trunk encapsulation dot1q
  !--启用802.1Q Trunk封装协议,即在该端口创建Trunk
  switchport trunk allowed vlan 1-80
  !--允许vlan 1-80在该中继线通讯
  switchport mode trunk
  !--将该端口设置为Trunk
  no ip address
  !
  interface GigabitEthernet0/2
  no ip address
  !
  interface Vlan1
  ip address 172.16.100.12 255.255.255.0
  !--LAN1指定IP地址
  no ip route-cache
  no ip mroute-cache
  !
  ip classless
  ip http server
  !
  !
  !
  !
  line con 0
  line vty 0 4
  password aaa
  login
  line vty 5 15
  login
  !
  end



  ●Cisco Catalyst 3550-SMI配置清单
  Building configuration...

  Current configuration : 4055 bytes
  !
  version 12.1
  no service pad
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  !
  hostname office
  !
  enable secret 5 $1$p0fU$JeyPOM0RuL.Fqfe71efHF1
  !
  ip subnet-zero
  !
  !
  spanning-tree extend system-id
  !
  !
  !
  interface FastEthernet0/1
  switchport access vlan 60
  !--将端口FastEthernet0/1指定至VLAN 60
  no ip address
  !
  interface FastEthernet0/2
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/3
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/4
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/5
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/6
  switchport access vlan 20
  no ip address
  !--将端口FastEthernet0/6指定至VLAN 20
  !



  interface FastEthernet0/7
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/8
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/9
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/10
  switchport access vlan 20
  no ip address
  !
  interface FastEthernet0/11
  switchport access vlan 80
  no ip address
  !--将端口FastEthernet0/6指定至VLAN 80
  !
  interface FastEthernet0/12
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/13
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/14
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/15
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/16
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/17
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/18
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/19
  switchport access vlan 80
  no ip address
  !--将端口FastEthernet0/6指定至VLAN 80
  !



  interface FastEthernet0/20
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/21
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/22
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/23
  switchport access vlan 80
  no ip address
  !
  interface FastEthernet0/24
  switchport access vlan 80
  no ip address
  !
  interface GigabitEthernet0/1
  switchport trunk encapsulation dot1q
  !--启用802.1Q Trunk封装协议,即在该端口创建Trunk
  switchport trunk allowed vlan 1-80
  !--允许vlan 1-80在该中继线通讯
  switchport mode trunk
  !--从将该端口设置为Trunk
  no ip address
  !
  interface GigabitEthernet0/2
  no ip address
  !
  interface Vlan1
  ip address 172.16.100.13 255.255.255.0
  !--为LAN1指定IP地址
  no ip route-cache
  no ip mroute-cache
  !
  ip classless
  ip http server
  !
  !
  !
  !
  line con 0
  line vty 0 4
  password aaa
  login
  line vty 5 15
  login
  !
  end


  ●Cisco Catalyst 2950G配置清单
  四台Cisco Catalyst 2950G的配置基本相同,下面仅列出VLAN 60的配置情况。
  Building configuration...

  Current configuration : 2143 bytes
  !
  version 12.1
  no service pad
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  !
  hostname msl
  !
  enable password aaa
  !
  ip subnet-zero
  !
  !
  spanning-tree extend system-id
  !
  !
  interface FastEthernet0/1
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/2
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/3
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/4
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/5
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/6
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/7
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/8
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/9
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/10
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/11
  switchport access vlan 60
  no ip address
  !



  interface FastEthernet0/12
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/13
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/14
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/15
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/16
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/17
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/18
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/19
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/20
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/21
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/22
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/23
  switchport access vlan 60
  no ip address
  !
  interface FastEthernet0/24
  switchport access vlan 60
  no ip address
  !
  interface GigabitEthernet0/1
  no ip address
  !
  interface GigabitEthernet0/2
  no ip address
  !
  interface Vlan1
  ip address 172.16.100.10 255.255.255.0
  !
  ip classless
  ip http server
  !
  !
  !
  !
  line con 0
  line vty 0 4
  password aaa
  login
  line vty 5 15
  login
  !
  end



  以下内容 ancy 由撰写

  经典的三层网络案例分析。改进中。。。新加很多先进技术噢!新增路由器的配置。
  经典的三层网络案例分析。

  目的:让不同的vlan 之间可以互相通讯。

  IP规划
  vlna ID ip网段 vlan网关
  vlan 1 172.16.1.0/24 172.16.1.7-9
  vlan 2 172.16.2.0/24 172.16.2.252-254
  vlan 3 172.16.3.0/24 172.16.3.252-254
  vlan 4 172.16.4.0/24 172.16.4.252-254
  vlan 5 172.16.5.0/24 172.16.5.252-254
  vlan 6 172.16.6.0/24 172.16.6.252-254
  vlan 7 172.16.7.0/24 172.16.7.252-254
  vlan 8 172.16.8.0/24 172.16.8.252-254
  vlan 9 172.16.9.0/24 172.16.9.252-254
  拓朴图见最后面


  路由器配置

  一、cisco路由器配置:
  Enable
  Configure terminal
  Service password-encryption
  Hostname cisco1721
  Enable secret 654321
  Enable password 123456
  ip subnet-zero
  ip name-server 202.96.134.133 202.96.172.218
  interface fastethernet 0
  ip address 61.142.221.5 255.255.255.240
  speed auto
  no shutdown
  interface serial 0
  ip unnumbered fastethernet 0
  encapsulation ppp
  no fair-queue
  bandwidth 2048
  no shutdown
  exit
  ip classless
  ip route 0.0.0.0 0.0.0.0 serial 0
  no ip http server
  line con 0
  line aux 0
  line vty 0 4
  password 12345678
  login
  no scheduler allocate
  end
  copy running-config startup-config
  reload
  请注意NAT等是在防火墙设置的.




  交换机配置

  一、Catalyst 4006-s3交换机配置:
  Enable
  Configure terminal
  service pad
  service password-encryption
  hostname c4006-s3
  enable password 123456.
  Enable secret 654321
  Ip subnet-zero
  Ip name-server 172.16.8.1 172.16.8.2
  ip routing
  Exit
  Vlan database
  Vtp mode server
  Vtp domain centervtp
  Vlan 2 name vlan2
  Vlan 3 name vlan3
  Vlan 4 name vlan4
  Vlan 5 name vlan5
  Vlan 6 name vlan6
  Vlan 7 name vlan7
  Vlan 8 name vlan8
  Vlan 9 name vlan9
  Exit



  Configure terminal
  Interface port-channel 1
  Interface gigabitethernet 2/1
  channel-group 1
  Interface gigabitethernet 2/2
  channel-group 1
  Interface gigabitethernet 2/1
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigabitethernet 2/3
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigabitethernet 2/4
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigbitethernet 2/5
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigbitethernet 2/6
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchprot trunk allowed vlan all

  interface gigbitethernet 2/7
  switchport access vlan 9
  no shutdown

  interface range gigabitethernet 2/8 – 20
  switchport mode access
  switchport access vlan 8
  no shutdown
  spanning-tree portfast


  interface gigabitethernet 3/1
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigabitethernet 3/2
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  spanning-tree vlan 1-9 root primary
  spanning-tree backbonefast

  interface vlan 1
  ip address 172.16.1.7 255.255.255.0
  no shutdown
  standby 1 ip 172.16.1.9
  standby 1 priority 110 preempt

  interface vlan 2
  ip address 172.16.2.252 255.255.255.0
  no shutdown
  standby 2 ip 172.16.2.254
  standby 2 priority 110 preempt
  interface vlan 3
  ip address 172.16.3.252 255.255.255.0
  no shutdown
  standby 3 ip 172.16.3.254
  standby 3 priority 110 preempt

  interface vlan 4
  ip address 172.16.4.252 255.255.255.0
  no shutdown
  standby 4 ip 172.16.4.254
  standby 4 priority 110 preempt

  interface vlan 5
  ip address 172.16.5.252 255.255.255.0
  no shutdown
  standby 5 ip 172.16.5.254
  standby 5 priority 110 preempt

  interface vlan 6
  ip address 172.16.6.252 255.255.255.0
  no shutdown
  standby 6 ip 172.16.6.254
  standby 6 priority 110 preempt

  interface vlan 7
  ip address 172.16.7.252 255.255.255.0
  no shutdown
  standby 7 ip 172.16.7.254
  standby 7 priority 110 preempt

  interface vlan 8
  ip address 172.16.8.252 255.255.255.0
  no shutdown
  standby 8 ip 172.16.8.254
  standby 8 priority 110 preempt

  interface vlan 9
  ip address 172.16.9.252 255.255.255.0
  no shutdown
  standby 9 ip 172.16.9.254
  standby 9 priority 110 preempt


  exit
  ip classless
  ip route 0.0.0.0 0.0.0.0 172.16.9.250
  line con 0
  line aux 0
  line vty 0 15
  password 12345678
  login
  end
  copy running-config startup-config
  reload

  二、Catalyst 3550-12T交换机配置:
  Enable
  Configure terminal
  service pad
  service password-encryption
  hostname c3550-12t
  enable password 123456
  enable secret 654321
  ip subnet-zero
  ip name-server 172.16.8.1. 172.16.8.2
  ip routing
  exit
  vlan database
  vtp mode server
  vtp domain centervtp
  vlan 2 name vlan2
  vlan 3 name vlan3
  vlan 4 name vlan4
  vlan 5 name vlan5
  vlan 6 name vlan6
  vlan 7 name vlan7
  vlan 8 name vlan8
  vlan 9 name vlan9
  exit



  configure terminal
  interface port-channel 1
  interface gigabitethernet 0/1
  channel-group 1
  interface gigabitethernet 0/2
  channel-group 1
  exit

  interface gigabitethernet 0/1
  switchport mode trunk
  switchport encapsulation dotlq
  swithchport trunk allowed vlan all

  interface gigabitethernet 0/3
  switchport mode trunk
  switchport trunk encapsulation dotlq
  swithcport trunk allowed vlan all

  interface gigabitethernet 0/4
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigabitethernet 0/5
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigabitethernet 0/6
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  interface gigabitethernet 0/7
  switchport access vlan 9
  no shutdown

  interface range gigabitethernet 0/8 – 10
  switchport mode access
  switchport access vlan 8
  no shutdown
  spanning-tree portfast


  interface gigabitethernet 0/11
  switchport mode trunk
  switchport trunk encapsulation dotlq
  swithcprot trunk allowed vlan all

  interface gigabitethernet 0/12
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all

  spanning-tree vlan 1-9 root secondary
  spanning-tree backbonefast

  interface vlan 1
  ip address 172.16.1.8 255.255.255.0
  no shutdown
  standby 1 ip 172.16.1.9
  standby 1 priority 100 preempt


  interface vlan 2
  ip address 172.16.2.253 255.255.255.0
  no shutdown
  standby 2 ip 172.16.2.254
  standby 2 priority 100 preempt

  interface vlan 3
  ip address 172.16.3.253 255.255.255.0
  not shutdown
  standby 3 ip 172.16.3.254
  standby 3 priority 100 preempt

  interface vlan 4
  ip address 172.16.4.253 255.255.255.0
  no shutdown
  standby 4 ip 172.16.4.254
  standby 4 priority 100 preempt

  interface vlan 5
  ip addess 172.16.5.253 255.255.255.0
  no shutdown
  standby 5 ip 172.16.5.253
  standby 5 priority 100 preempt


  interface vlan 6
  ip address 172.16.6.253 255.255.255.0
  no shutdown
  standby 6 ip 172.16.6.254
  standby 6 priority 100 preempt

  interface vlan 7
  ip address 172.16.7.253 255.255.255.0
  no shutdown
  standby 7 ip 172.16.7.254
  standby 7 priority 100 preempt

  interface vlan 8
  ip address 172.16.8.253 255.255.255.0
  no shutdown
  standby 8 ip 172.16.8.254
  standby 8 priority 100 preempt

  interface vlan 9
  ip address 172.16.9.253 255.255.255.0
  no shutdown
  standby 9 ip 172.16.9.254
  standby 9 priority 100 preempt

  exit
  ip classless
  ip route 0.0.0.0 0.0.0.0 172.16.9.250
  ip http server
  line con 0
  line aux 0
  line vty 0 15
  password 12345678
  login
  end
  copy running-config statup-config
  reload



  三、Catalyst 2950-24 vlan2 交换机配置:
  Enable
  Configure terminal
  Service pad
  Service password-encryption
  Hostname c2950-241
  Enable password 123456
  Enable secret 654321
  Ip subnet-zero
  Interface vlan 1
  Ip address 172.16.1.1 255.255.255.0
  management
  No shutdown
  Ip default-gateway 172.16.1.9
  Ip name-server 172.16.8.1 172.16.8.2
  exit
  Vlan database
  Vtp mode client
  Vtp domain centervtp
  Exit
  Configure terminal
  Interface range fastethernet 0/1 – 20
  Switchport mode access
  Switchport accesss vlan 2
  No shutdown
  Spanning-tree portfast

  Spanning-tree uplinkfast
  Spanning-tree backbonefast

  Interface gigabitethernet 0/1
  Switchport mode trunk
  Switchport trunk encapculation dotlq
  Switchport trunk allowed vlan all
  Spanning-tree cost 10

  Interface gigabitethernet 0/2
  Switchport mode trunk
  Switchport trunk encapculation dotlq
  Switchport trunk allowed vlan all
  Spanning-tree cost 20


  Exit
  Line con 0
  Line aux 0
  Line vty 0 15
  Password 12345678
  Login
  End
  Copy running-config statup-config
  Reload

  四、catalyst 2950-24 vlan 3 交换机配置:
  enable
  configure terminal
  service pad
  service password-encryption
  hostname c2950-242
  enable password 123456
  enable secret 654321
  ip subnet-zero
  interface vlan 1
  ip address 172.16.1.2 255.255.255.0
  management
  no shutdown
  ip default-gateway 172.16.1.9
  ip name-server 172.16.8.1 172.16.8.2
  exit
  vlan database
  vtp domain centervtp
  vtp mode client
  exit


  configure terminal
  interface range fastethernet 0/1 – 20
  switchport mode access
  switchport access vlan 3
  no shutdown
  spanning-tree portfast

  spanning-tree uplinefast
  spanning-tree backbonefast

  interface gigabitethernet 0/1
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all
  spanning-tree cost 10

  interface gigabitethernet 0/2
  switchport mode trunk
  switchport trunk encapsulation dotlq
  switchport trunk allowed vlan all
  spanning-tree cost 20
  exit

  line con 0
  line aux 0
  line vty 0 15
  password 12345678
  login
  end
  copy running-config startup-config
  reload


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