如何在三层交换机下的二层交换机配置vlan 三层交换机和二层交换机vlan怎么设置
\u5728\u4e09\u5c42\u4ea4\u6362\u673a\u548c\u4e8c\u5c42\u4ea4\u6362\u673a\u505a\u5982\u4f55\u914d\u7f6e\u4f7f\u8fd9\u4e24\u53f0\u4e3b\u673aping\u901a2\u79cd\u60c5\u51b5\u53ef\u4ee5\u4e92\u901a\u3002
\u7b2c1\u79cd\uff0c\u5728\u7f51\u7edc\u4e2d\u4e0d\u5212\u5206VLAN\u65f6\uff0c\u7f51\u7edc\u4e8c\u5c42\u4e92\u901a\uff0c\u4e0d\u9700\u8981\u901a\u8fc7\u8def\u7531\uff0c\u5219\u5c062\u53f0\u7535\u8111\u7684IP\u5730\u5740\u8bbe\u7f6e\u4e3a\u540c\u4e00\u7f51\u6bb5\u7684\u5730\u5740\uff0c\u6bd4\u5982PC1 \u4e3a192.168.1.1/24\uff0cPC2 \u4e3a192.168.1.2/24\uff0c\u5c31\u53ef\u4ee5\u4e92\u901a\u3002
\u7b2c2\u79cd\uff0c\u5728\u4e8c\u5c42\u4ea4\u6362\u673a\u4e0a\u5212\u5206\u4e86VLAN\uff0c\u90a3\u4e48\uff0c\u5047\u8bbe\u56fe\u5de6\u8fb9\u7684\u4ea4\u6362\u673a\u4e3aS1\uff0c\u63a5\u53e3VLAN ID\u4e3a10\uff0c\u53f3\u8fb9\u7684\u4ea4\u6362\u673a\u4e3aS2\uff0c\u63a5\u53e3VLAN ID\u4e3a20\uff0c\u90a3\u4e48\u9700\u8981\u5c062\u4e2a\u4e8c\u5c42\u4ea4\u6362\u673a\u7684\u4e0a\u884c\u53e3\u914d\u7f6e\u4e3aTRUNK\u65b9\u5f0f\uff0c\u5e76\u5728\u4e09\u5c42\u4ea4\u6362\u673a\u4e0a\u914d\u7f6e2\u4e2aVLAN\u7684\u7f51\u5173\u5730\u5740\u3002\u540c\u65f6\u57282\u53f0\u4e3b\u673a\u4e0a\u914d\u7f6e\u76f8\u5e94\u7f51\u6bb5\u7684IP\u4ee5\u53ca\u7f51\u5173\u5730\u5740\u3002
\u5177\u4f53\u914d\u7f6e\u5982\u4e0b\uff1a
\u4e8c\u5c42\u4ea4\u6362\u673aS1\uff1a
S1#vlan database
S1(vlan)#vlan 10
S1(vlan)#exit
S1#conf t
S1(config)#int f0/2
S1(config-if)#switchport mode access
S1(config-if)#switchport acc vlan 10
S1(config)#int f0/1
S1(config-if)#switchport mode trunk
\u4e8c\u5c42\u4ea4\u6362\u673aS2\uff1a
S2#vlan database
S2(vlan)#vlan 20
S2(vlan)#exit
S2#conf t
S2(config)#int f0/2
S2(config-if)#switchport mode access
S2(config-if)#switchport acc vlan 20
S2(config)#int f0/1
S2(config-if)#switchport mode trunk
\u4e09\u5c42\u4ea4\u6362\u673aS3\uff1a
S3#vlan database
S3(vlan)#vlan 10
S3(vlan)#vlan 20
S3(vlan)#exit
S3#conf t
S3(config)#interface vlan 10
S3(config-if)#ip add 192.168.10.1 255.255.255.0
S3(config-if)#int vl 20
S3(config-if)#ip add 192.168.20.1 255.255.255.0
S3(config-if)#end
S3#sh ip route
Gateway of last resort is not set
C 192.168.10.0/24 is directly connected, Vlan10
C 192.168.20.0/24 is directly connected, Vlan20
\u914d\u7f6e\u5b8c\u6210\uff0c\u7136\u540e\u5c06PC1\u7684\u5730\u5740\u8bbe\u7f6e\u4e3a192.168.10.2\uff0c\u63a9\u7801255.255.255.0\uff0c\u7f51\u5173192.192.168.10.1
PC2\u7684\u5730\u5740\u8bbe\u7f6e\u4e3a192.168.20.2\uff0c\u63a9\u7801255.255.255.0\uff0c\u7f51\u5173192.192.168.20.1
\u5728PC2 Ping PC1\uff0c\u6709\u5982\u4e0b\u7ed3\u679c\uff1a
PC>ping 192.168.10.2
Pinging 192.168.10.2 with 32 bytes of data:
Request timed out.
Reply from 192.168.10.2: bytes=32 time=125ms TTL=127
Reply from 192.168.10.2: bytes=32 time=124ms TTL=127
Reply from 192.168.10.2: bytes=32 time=110ms TTL=127
\u521b\u5efavlan (2\u79cd\u65b9\u6cd5\uff09\uff1a\u540d\u5b57\u3001\u5e8f\u53f7\u81ea\u5b9a\u4e49
\u5212\u5206\u63a5\u53e3\uff1a
Device mode already VTP SERVER.
Switch(config)#vtp domain client
Changing VTP domain name from NULL to client
Switch(config)#vtp ver 2
Switch(config)#vlan 10
Switch(config-vlan)#name pc 1
^
% Invalid input detected at '^' marker.Switch(config-vlan)#name pc1
Switch(config-vlan)#vlan 20
Switch(config-vlan)#name pc2
Switch(config-vlan)#exit
Switch(config)#int vlan 10%LINK-5-CHANGED: Interface Vlan10, changed state to up
Switch(config-if)#ip address 192.168.10.1 255.255.255.0
Switch(config-if)#no shut
Switch(config-if)#int vlan 20%LINK-5-CHANGED: Interface Vlan20, changed state to up
Switch(config-if)#ip address 192.168.20.1 255.255.255.0
Switch(config-if)#no shut
Switch(config-if)#int fa0/1
Switch(config-if)#switch mode trunk
Command rejected: An interface whose trunk encapsulation is "Auto" can not be configured to "trunk" mode.
Switch(config-if)#switch trunk encap do
Switch(config-if)#switch mode trunk
Switch(config-if)#exit
Switch(config)#ip routing
Switch(config)#以上为三层交换机配置，请参考。
把三层交换机设置成vtp server模式，二层交换机设置成vtp client模式，交换机之间的连接使用trunk模式。并设置为同一vtp domian，然后开启三层交换机的路由功能即可。Switch(config)#Vtp mode server
Device mode already VTP SERVER.
Switch(config)#vtp domain client
Changing VTP domain name from NULL to client
Switch(config)#vtp ver 2
Switch(config)#vlan 10
Switch(config-vlan)#name pc 1
^
% Invalid input detected at '^' marker.Switch(config-vlan)#name pc1
Switch(config-vlan)#vlan 20
Switch(config-vlan)#name pc2
Switch(config-vlan)#exit
Switch(config)#int vlan 10%LINK-5-CHANGED: Interface Vlan10， changed state to up
Switch(config-if)#ip address 192.168.10.1 255.255.255.0
Switch(config-if)#no shut
Switch(config-if)#int vlan 20%LINK-5-CHANGED: Interface Vlan20， changed state to up
Switch(config-if)#ip address 192.168.20.1 255.255.255.0
Switch(config-if)#no shut
Switch(config-if)#int fa0/1
Switch(config-if)#switch mode trunk
Command rejected: An interface whose trunk encapsulation is "Auto" can not be configured to "trunk" mode.
Switch(config-if)#switch trunk encap do
Switch(config-if)#switch mode trunk
Switch(config-if)#exit。
下面两台LSW在Fa0/3和Fa0/4端口配置VLAN TRUNK，可以实现主机1<-->主机3、主机2<-->主机4的互访。无法实现vlan10和vlan20的互访。二层交换机上划分VLAN，已经限制了主机1和主机2、主机3和主机4的互访，而且主机1/主机2、主机3/主机4所在的vlan10和vlan20无法通过三层设备路由方式来实现互访。只能做纯学术探讨，实践中没有这样去做网络规划和实施的。组网属于网络规划的重要一步，要讲经济效益，怎么实施简单、方便、网络结构清晰是实际工作中设备供应商和客户都注重的方面。 实际上调整一下主机2和主机3的接入位置，vlan10和lan20实现互通就很简单了。
绛旓細鎶婁笁灞備氦鎹㈡満璁剧疆鎴恦tp server妯″紡锛屼簩灞備氦鎹㈡満璁剧疆鎴恦tp client妯″紡锛屼氦鎹㈡満涔嬮棿鐨勮繛鎺ヤ娇鐢╰runk妯″紡銆傚苟璁剧疆涓哄悓涓vtp domian锛岀劧鍚庡紑鍚笁灞備氦鎹㈡満鐨勮矾鐢卞姛鑳藉嵆鍙係witch(config)#Vtp mode server Device mode already VTP SERVER.Switch(config)#vtp domain client Changing VTP domain name from NULL to...
绛旓細鍦ㄤ簩灞備氦鎹㈡満涓鏍峰湪鍏ㄥ眬閰嶇疆涓嬶紝鍛戒护璺熶笂闈㈠樊涓嶉敊锛鍙鎶娾渧tp mode server "鏀规垚"vtp mode client"鍗冲彲 鍙鍦ㄤ笁灞備氦鎹㈡満閰嶇疆VLAN灏辫浜锛岀劧鍚庝笅闈㈢殑浜屽眰浜ゆ崲鏈轰篃璺熺潃鍙樺寲鐨勶紝鍦ㄤ簩灞備笉杩囪繕鏄渶瑕鎶妏c鐩稿簲鐨勭鍙ｆ坊鍔犲埌鐩稿簲鐨剉lan灏辫浜銆傝繘鍏ユ煇涓鍙ｏ紝"switchport access vlan 缂栧彿 vlan涔嬮棿鏈濂藉垝...
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绛旓細1 192.168.30.1 !vtp mode transparent (淇敼vtp涓洪忔槑妯″紡锛夋墍鏈2灞備氦鎹㈡満閰嶇疆锛> enable confi t vlan 10 name voice vlan vlan 20 name data vlan vlan 30 name wireless vlan vlan 40 name manager vlan !interface g0/1 sw trunk en dot1q sw mode trunk !vtp mode transparent !
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绛旓細閰嶇疆涓簍runk 杩樻湁鍦ㄤ笁灞備氦鎹涓婂叏灞妯″紡 鎵搉o sw 锛堟槸寮璺敱鎺ュ彛)鍦ㄤ笁灞備氦鎹㈠拰浜屽眰浜ゆ崲鐩歌繛鐨勫彛锛屾瘮濡 涓夊眰浜ゆ崲f0/1鍙ｈ繛鎺ワ紝浜屽眰浜ゆ崲鏄痜0/1鍙ｏ紝鍦ㄤ袱涓澶囦笂鍒嗗埆 interface f0/1 sw mode trunk
