核心交換機這個詞對于我們來說太過于陌生了，但是它在我們的網(wǎng)絡生活中起到了非常必要的作用。小兔來簡單的做個比喻，我們可以將核心交換機比喻為一個大型的路由器，它可以將網(wǎng)絡覆蓋到各個電腦，不過它的覆蓋范圍則是路由器的幾百倍甚至幾千倍?？梢哉f沒有它的存在就沒有網(wǎng)絡的傳播，我們便沒有網(wǎng)絡的使用，這么神奇的機器就由學習啦小編來講解它的配置。

　　System-view 一、激活combo端口，啟用DHCP interface GigabitEthernet0/0/5 undo shutdown interface GigabitEthernet0/0/6 undo shutdown interface GigabitEthernet0/0/7 undo shutdown interface GigabitEthernet0/0/8 undo shutdown dhcp enable

　　二、建立vlan Vlan1防火墻用(端口27-28) Vlan20服務器用(端口15-26) Vlan2-9保持不變(端口5-12) Vlan10-11原Vlan1計算機使用(端口13-14)

　　Vlan 1 interface Vlan-interface1 ip address 10.0.1.1 255.255.255.0 dhcp select server global-pool

　　Vlan 2 interface Vlan-interface2 ip address 10.0.2.1 255.255.255.0 dhcp select server global-pool

　　Vlan 3 interface Vlan-interface3 ip address 10.0.3.1 255.255.255.0 dhcp select server global-pool

　　Vlan 4 interface Vlan-interface4 ip address 10.0.4.1 255.255.255.0 dhcp select server global-pool

　　Vlan 5 interface Vlan-interface5 ip address 10.0.5.1 255.255.255.0 dhcp select server global-pool

　　Vlan 6 interface Vlan-interface6 ip address 10.0.6.1 255.255.255.0 dhcp select server global-pool

　　Vlan 7 interface Vlan-interface7 ip address 10.0.7.1 255.255.255.0 dhcp select server global-pool

　　Vlan 8 interface Vlan-interface8 ip address 10.0.8.1 255.255.255.0 dhcp select server global-pool

　　Vlan 9 interface Vlan-interface9 ip address 10.0.9.1 255.255.255.0 dhcp select server global-pool

　　Vlan 10 interface Vlan-interface10 ip address 10.0.10.1 255.255.255.0 dhcp select server global-pool

　　Vlan 11 interface Vlan-interface11 ip address 10.0.11.1 255.255.255.0 dhcp select server global-pool

　　Vlan 20 interface Vlan-interface20 ip address 10.0.0.1 255.255.255.0 dhcp select server global-pool

　　三、設(shè)定端口所在

　　vlan interface GigabitEthernet0/0/5 port access vlan 2 interface GigabitEthernet0/0/6 port access

　　vlan 3 interface GigabitEthernet0/0/7 port access

　　vlan 4 interface GigabitEthernet0/0/8 port access

　　vlan 5 interface GigabitEthernet0/0/9 port access

　　vlan 6 interface GigabitEthernet0/0/10 port access

　　vlan7 interface GigabitEthernet0/0/11 port access

　　vlan 8 interface GigabitEthernet0/0/12 port access

　　vlan 9 interface GigabitEthernet0/0/13 port access

　　vlan 10 interface GigabitEthernet0/0/14 port access

　　vlan 11 interface GigabitEthernet0/0/15 port access

　　vlan 20 interface GigabitEthernet0/0/16 port access

　　vlan 20 interface GigabitEthernet0/0/17 port access

　　vlan 20 interface GigabitEthernet0/0/18 port access

　　vlan 20 interface GigabitEthernet0/0/19 port access

　　vlan 20 interface GigabitEthernet0/0/20 port access

　　vlan 20 interface GigabitEthernet0/0/21 port access

　　vlan 20 interface GigabitEthernet0/0/22 port access

　　vlan 20 interface GigabitEthernet0/0/23 port access

　　vlan 20 interface GigabitEthernet0/0/24 port access

　　vlan 20 interface GigabitEthernet0/0/25 port access

　　vlan 20 interface GigabitEthernet0/0/26 port access

　　vlan 20 interface GigabitEthernet0/0/27 port access

　　vlan 1 interface GigabitEthernet0/0/28 port access

　　四、定義地址池

　　dhcp server ip-pool vlan1 network 10.0.1.0 mask 255.255.255.0

　　gateway-list 10.0.1.1

　　dns-list 10.0.0.16 domain-name

　　dfic.net dhcp server ip-pool

　　vlan2 network 10.0.2.0

　　mask 255.255.255.0

　　gateway-list 10.0.2.1

　　dns-list 10.0.0.16

　　domain-name dfic.net

　　dhcp server ip-pool

　　vlan3 network 10.0.3.0

　　mask 255.255.255.0

　　gateway-list 10.0.3.1

　　五、設(shè)置路由

　　Undo ip route-static 0.0.0.0 0.0.0.0 10.0.1.1

　　preference 60 dhcp server forbidden-ip 10.0.0.1

　　dhcp server forbidden-ip 10.0.1.1

　　dhcp server forbidden-ip 10.0.1.250 10.0.1.254

　　dhcp server forbidden-ip 10.0.2.1

　　dhcp server forbidden-ip 10.0.3.1

　　dhcp server forbidden-ip 10.0.4.1

　　dhcp server forbidden-ip 10.0.5.1

　　dhcp server forbidden-ip 10.0.7.1

　　dhcp server forbidden-ip 10.0.8.1

　　dhcp server forbidden-ip 10.0.9.1

　　dhcp server forbidden-ip 10.0.10.1

　　dhcp server forbidden-ip 10.0.11.1

　　聽完學習啦小編的介紹之后不知道大家明白沒有，核心交換機的配置固然是繁瑣的，但是它擔任的職責是非常重要的，它負責覆蓋一個鄉(xiāng)鎮(zhèn)甚至一個縣城的網(wǎng)絡，如果核心交換機出現(xiàn)了故障那我們將無法正常上網(wǎng)，雖然我們大部分人是接觸不到核心交換機的，但是了解一下它的配置對于我們自身來說也是在增長知識。