VLAN 间路由
VLAN 间路由
拓扑
配置交换机
创建VLAN
Switch>en Switch#conf t Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#host S0 S0(config)#VLAN 10 S0(config-vlan)#name Finance S0(config-vlan)#VLAN 20 S0(config-vlan)#name Development S0(config-vlan)#VLAN 30 S0(config-vlan)#name Management S0(config-vlan)#exit划分VLAN
S0(config)#int range f0/1-10 S0(config-if-range)#switchport mode access S0(config-if-range)#switchport access VLAN 10 S0(config-if-range)#int range f0/11-20 S0(config-if-range)#switchport mode access S0(config-if-range)#switchport access VLAN 20 S0(config-if-range)#int range f0/21-24 S0(config-if-range)#switchport mode access S0(config-if-range)#switchport access VLAN 30 S0(config-if-range)#end S0# %SYS-5-CONFIG_I: Configured from console by console设置与路由连线的接口为trunk
S0(config)#int g0/1 S0(config-if)#switchport mode trunk查看VLAN信息
S0#show vlan VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Gig0/1, Gig0/2 10 Finance active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10 20 Development active Fa0/11, Fa0/12, Fa0/13, Fa0/14 Fa0/15, Fa0/16, Fa0/17, Fa0/18 Fa0/19, Fa0/20 30 Management active Fa0/21, Fa0/22, Fa0/23, Fa0/24 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------ 1 enet 100001 1500 - - - - - 0 0 10 enet 100010 1500 - - - - - 0 0 20 enet 100020 1500 - - - - - 0 0 30 enet 100030 1500 - - - - - 0 0 1002 fddi 101002 1500 - - - - - 0 0 1003 tr 101003 1500 - - - - - 0 0 1004 fdnet 101004 1500 - - - ieee - 0 0 1005 trnet 101005 1500 - - - ibm - 0 0 VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------ Remote SPAN VLANs ------------------------------------------------------------------------------ Primary Secondary Type Ports ------- --------- ----------------- ------------------------------------------
配置路由器
启用 g0/0 端口
Router>en Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#host R0 R0(config)#int f0/0 R0(config-if)#no shut R0(config-if)# %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up回到 S0，检查Trunk状态
S0# %LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up S0#show interfaces trunk Port Mode Encapsulation Status Native vlan Gig0/1 on 802.1q trunking 1 Port Vlans allowed on trunk Gig0/1 1-1005 Port Vlans allowed and active in management domain Gig0/1 1,10,20,30 Port Vlans in spanning tree forwarding state and not pruned Gig0/1 none为R0子接口封装dot1q
R0(config)#interface f0/0.10 R0(config-subif)# %LINK-5-CHANGED: Interface FastEthernet0/0.10, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.10, changed state to up R0(config-subif)#encapsulation dot1q 10 R0(config-subif)#ip add 10.10.10.1 255.255.255.0 R0(config-subif)#exit R0(config)#interface f0/0.20 R0(config-subif)# %LINK-5-CHANGED: Interface FastEthernet0/0.20, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.20, changed state to up R0(config-subif)#encapsulation dot1q 20 R0(config-subif)#ip add 10.10.20.1 255.255.255.0 R0(config-subif)#exit R0(config)#interface f0/0.30 R0(config-subif)# %LINK-5-CHANGED: Interface FastEthernet0/0.30, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.30, changed state to up R0(config-subif)#encapsulation dot1q 30 R0(config-subif)#ip add 10.10.30.1 255.255.255.0 R0(config-subif)#end R0# %SYS-5-CONFIG_I: Configured from console by console R0#检测
R0#show ip interface brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES unset up up FastEthernet0/0.10 10.10.10.1 YES manual up up FastEthernet0/0.20 10.10.20.1 YES manual up up FastEthernet0/0.30 10.10.30.1 YES manual up up FastEthernet1/0 unassigned YES unset administratively down down Serial2/0 unassigned YES unset administratively down down Serial3/0 unassigned YES unset administratively down down FastEthernet4/0 unassigned YES unset administratively down down FastEthernet5/0 unassigned YES unset administratively down down R0#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set 10.0.0.0/24 is subnetted, 3 subnets C 10.10.10.0 is directly connected, FastEthernet0/0.10 C 10.10.20.0 is directly connected, FastEthernet0/0.20 C 10.10.30.0 is directly connected, FastEthernet0/0.30配置DHCP
R0#en R0#conf t Enter configuration commands, one per line. End with CNTL/Z. R0(config)#ip dhcp pool v10 R0(dhcp-config)#network 10.10.10.0 255.255.255.0 R0(dhcp-config)#default-router 10.10.10.1 R0(dhcp-config)#exit R0(config)#ip dhcp pool v20 R0(dhcp-config)#network 10.10.20.0 255.255.255.0 R0(dhcp-config)#default-router 10.10.20.1 R0(dhcp-config)#end R0# %SYS-5-CONFIG_I: Configured from console by console
测试
为 PC0（位于VLAN10），PC2（位于VLAN20） 启用DHCP
PC0, PC2互ping：
