dhcp下不同vlan间通信

 局域网内不同vlan间通过dhcp实现通信

             

 

 

 

姓名：刘凡

 

运用技术:

路由器中继 ip relay-address …….

路由器snat dnat 转换

控制列表建立

路由器子接口vlan划分

交换机vlan划分

交换机端口设置trunk

Dhcp服务器配置

www服务器配置

路由器

 

E1端口  192.168.101.23

路由器划分vlan和实现中继

Int e0.1

Vlan-type dot1q vid10

Int e0.2

Vlan-type dot1q vid20

Ip relay-address192.168.30.3

Int e0.1

Ip relay-address192.168.30.3

 

路由器实现snat和dnat转换：

acl 2000(建访问控制列表)

rule permit source 192.168.30.0 0.0.0 .255

rule deny source any

quit

nat bound 2000 interface(SNAT)

inter e1

nat server global 192.168.101.23 80 inside 192.168.30.3 80 tcp(DNAT)

 

 

 

 

Linux作为dhcp服务器

subnet 192.168.10.0 netmask 255.255.255.0 {

 

# --- default gateway

        option routers                  192.168.10.254;

        option subnet-mask              255.255.255.0;

 

        option nis-domain               "domain.org";

        option domain-name              "qqqq.com";

        option domain-name-servers      222.88.88.88;

 

        option time-offset              -18000; # Eastern Standard Time

#       option ntp-servers              192.168.1.1;

#       option netbios-name-servers     192.168.1.1;

# --- Selects point-to-point node (default is hybrid). Don't change this unless

# -- you understand Netbios very well

#       option netbios-node-type 2;

 

        range dynamic-bootp 192.168.10.128 192.168.10.253;

        default-lease-time 21600;

        max-lease-time 43200;

 

        # we want the nameserver to appear at a fixed address

 

}

 

subnet 192.168.20.0 netmask 255.255.255.0 {

 

# --- default gateway

        option routers                  192.168.20.254;

        option subnet-mask              255.255.255.0;

 

        option nis-domain               "domain.org";

        option domain-name              "www.com";

        option domain-name-servers      222.88.88.88;

 

        option time-offset              -18000; # Eastern Standard Time

#       option ntp-servers              192.168.1.1;

#       option netbios-name-servers     192.168.1.1;

# --- Selects point-to-point node (default is hybrid). Don't change this unless

# -- you understand Netbios very well

#       option netbios-node-type 2;

 

        range dynamic-bootp 192.168.20.128 192.168.20.253;

        default-lease-time 21600;

        max-lease-time 43200;

 

        # we want the nameserver to appear at a fixed address

}

 

 

subnet 192.168.30.0 netmask 255.255.255.0 {

 

# --- default gateway

        option routers                  192.168.30.254;

        option subnet-mask              255.255.255.0;

 

        option nis-domain               "domain.org";

        option domain-name              "eee.com";

        option domain-name-servers      222.88.88.88;

 

        option time-offset              -18000; # Eastern Standard Time

#       option ntp-servers              192.168.1.1;

#       option netbios-name-servers     192.168.1.1;

# --- Selects point-to-point node (default is hybrid). Don't change this unless

# -- you understand Netbios very well

#       option netbios-node-type 2;

 

        range dynamic-bootp 192.168.30.128 192.168.30.253;

        default-lease-time 21600;

        max-lease-time 43200;

 

        # we want the nameserver to appear at a fixed address

}

 

www服务器配置

linux上安装www服务器

[root@localhost ~]# mount /dev/cdrom /mnt/cdrom

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@localhost ~]# cd /mnt/cdrom/Server

[root@localhost Server]# ll httpd*

-r--r--r-- 86 root root 1266575 Jul 27  2009 httpd- 2.2.3 -31.el5.i386.rpm

-r--r--r-- 99 root root  150002 Jul 27  2009 httpd-devel- 2.2.3 -31.el5.i386.rpm

-r--r--r-- 86 root root  830924 Jul 27  2009 httpd-manual- 2.2.3 -31.el5.i386.rpm

[root@localhost Server]# rpm -ivh httpd- 2.2.3 -31.el5.i386.rpm

warning: httpd- 2.2.3 -31.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186

Preparing...                ########################################### [100%]

   1:httpd                  ########################################### [100%]

 

 

编辑index.html文件

[root@localhost Server]# cd /var/www/html

[root@localhost html]# ll

total 0

[root@localhost html]# touch index.html

[root@localhost html]# vi index.html

写入内容;huanyingfangwen!

[root@localhost html]# service httpd start

Starting httpd:                                            [  OK  ]

[root@localhost html]#

 

 

 

交换机1

14和18口设置为trunk

14路由器18交换机

E0/10为10网段

E0/20为20网段

E0/15为30网段

[sw1]vlan 10

[sw1-vlan10]port e0/10

[sw1-vlan10]vlan 20

[sw1-vlan20]port e0/20

[sw1-vlan20]vlan 30

[sw1-vlan30]port e0/15

[sw1-Ethernet0/20]inter e0/14

[sw1-Ethernet0/14]port link-type trunk

[sw1-Ethernet0/20]inter e0/18

[sw1-Ethernet0/18]port link-type trunk

交换机2

22端口trunk

E1/0/10为10网段

E1/0/20为20网段

E1/0/15为30网段

 

[sw2-Ethernet1/0/22]quit

[sw2]vlan 10

[sw2-vlan10]port e1/0/10

[sw2-vlan10]vlan 20

[sw2-vlan20]port e1/0/20

[sw2-vlan20]vlan 30

[sw2-vlan30]e1/0/15

            ^

 % Unrecognized command found at '^' position.

[sw2-vlan30]port e1/0/15

[sw2-vlan30]

[sw2]inter e1/0/22

[sw2-Ethernet1/0/22]port link-type trunk

[sw2-Ethernet1/0/22]port trunk permit vlan all

 Please wait........................................... Done.

 

然后找一台pc机接sw1 10端口测试是否能获得10.0地址

再试20端口，交换机2也是如此

测试www服务器

用此主机访问192.168.30.3