怎样合理解决DHCP和VLAN的网关问题

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1、怎样合理解决DHCP和VLAN的网关问题（图）new副本.jpg(139.1KB)2009-8-1911:23之前的那个图不够完善，现在把它重做好了。解释：2801里面NAT做好，3650里面VLAN40DHCP获取做好。问题：需要VLAN40通过2801上外网，且做到内部互访。麻烦在哪里：3650里面设置默认网关为192.168.4.1为VLAN40的网关，但是不能上外网。              如果设置网关为192.168.4.2，可上外网，但不能互访。这就是冲突。              另外:有朋友建议3650和2801之间TRUNK。但是，我取消36

2、50的6口trunk，可是还有端口占用。                    SHOWRUN查不到。无果,可见下。问下大侠们有什么好的解决方案，谢谢先。附上3650和2801的配置：3650xiexie>enPassword:xiexie#shrunBuildingconfiguration...Currentconfiguration:3832bytes!version12.2noservicepadservicetimestampsdebuguptimeservicetimestampsloguptimenoservicepassword-encryption

3、!hostnamexiexie!enablesecret5$1$Zol8$QVnxkN9RBsXOSwKbSLkwW0!noaaanew-modelipsubnet-zeroiproutingipname-server210.21.196.6ipdhcpexcluded-address192.168.4.1192.168.4.200!ipdhcppooldhcp40  network192.168.4.0255.255.255.0  default-router192.168.4.1  dns-server210.21.196.6!!!!nofileverifyau

4、tospanning-treemodepvstspanning-treeextendsystem-id!vlaninternalallocationpolicyascending!interfaceFastEthernet0/1switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/2switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/3switchportaccessvlan20switchportmodeac

5、cess!interfaceFastEthernet0/4switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/5switchportaccessvlan11switchportmodeaccess!interfaceFastEthernet0/6switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/7switchportaccessvlan20switchportmodeaccess!interfaceFast

6、Ethernet0/8switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/9switchportaccessvlan10switchportmodeaccess!interfaceFastEthernet0/10switchportaccessvlan10switchportmodeaccess!interfaceFastEthernet0/11switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/12swit

7、chportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/13switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/14switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/15switchportaccessvlan20switchportmodeaccess!interfaceFastEthernet0/16switchportaccess