1、第三章VLAN),1,PPT學(xué)習(xí)交流,虛擬局域網(wǎng)VLAN,網(wǎng)絡(luò)分段 靈活性 安全性,3rd floor,2nd floor,1st floor,SALES,HR,ENG,每個(gè)VLAN都等于一個(gè)廣播域,2,PPT學(xué)習(xí)交流,VLAN的操作與特性,每個(gè)VLAN都類似一個(gè)物理網(wǎng)段 一個(gè)VLAN可跨越多個(gè)交換機(jī) 干道（Trunk）攜載多個(gè)VLAN的信息,3,PPT學(xué)習(xí)交流,VLAN的成員模式,靜態(tài)：由管理員靜態(tài)（人工）配置 動(dòng)態(tài)：基于MAC地址、IP地址等識(shí)別其成員資格,VLAN5,靜態(tài) VLAN,動(dòng)態(tài) VLAN,MAC = 1111.1111.1111,VLAN10,Port e0/9,Port e0

2、/4,4,PPT學(xué)習(xí)交流,基于端口的VLAN劃分,VLAN 2,VLAN 1,VLAN 3,5,PPT學(xué)習(xí)交流,VLAN的標(biāo)準(zhǔn),Cisco ISL,Initial MAC Address,Initial Type/Data,New CRC,2-Byte TPID2-Byte TCI,ISL Header 26 bytes,Encapsulated Ethernet frame,CRC 4 bytes,IEEE802.1Q,6,PPT學(xué)習(xí)交流,配置靜態(tài)VLAN,Engineering VLAN,Marketing VLAN,Sales VLAN,Floor #1,Floor #2,Floor #

3、3,Physical Layer LAN Switch,Human Layer,Network Layer,192.20.24.0,Routing Function Interconnects VLANs,192.20.21.0,192.30.20.0,Data-Link Layer Broadcast Domains,All users attached to same switch port must be in the same VLAN.,x,7,PPT學(xué)習(xí)交流,VLAN的配置步驟,定義Trunk 創(chuàng)建VLAN 劃分VLAN成員 檢查配置結(jié)果,8,PPT學(xué)習(xí)交流,Defining a

4、Trunk,trunk on | off | desirable | auto | nonegotiate,wg_sw_a(config-if)#,On = Set trunk on and negotiate with other side Off = Set trunk off and negotiate with other side Desirable = Negotiate with other side. Trunk on if other side is on, desirable, or auto Auto = Will be a trunk only if the other

5、 side is on or desirable Non-negotiate = Set trunk on and will not negotiate,9,PPT學(xué)習(xí)交流,Defining a Trunk,wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#interface f0/26 wg_sw_a(config-if)#trunk on,First trunk port(Port A),On = Set trunk on and negotia

6、te with other side Off = Set trunk off and negotiate with other side Desirable = Negotiate with other side. Trunk on if other side is on, desirable, or auto Auto = Will be a trunk only if the other side is on or desirable Non-negotiate = Set trunk on and will not negotiate,trunk on | off | desirable

7、 | auto | nonegotiate,wg_sw_a(config-if)#,10,PPT學(xué)習(xí)交流,Verifying a Trunk,wg_sw_a#show trunk A | B,中國(guó)最龐大的數(shù)據(jù)庫下載,11,PPT學(xué)習(xí)交流,Verifying a Trunk,wg_sw_a#show trunk a DISL state: On, Trunking: On, Encapsulation type: ISL,wg_sw_a#show trunk A | B,12,PPT學(xué)習(xí)交流,Adding a VLAN,vlan vlan# name vlan-name,wg_sw_a(conf

8、ig)#,13,PPT學(xué)習(xí)交流,Adding a VLAN,wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vlan 9 name switchlab2,vlan vlan# name vlan-name,wg_sw_a(config)#,14,PPT學(xué)習(xí)交流,Verifying a VLAN,wg_sw_a#show vlan vlan#,15,PPT學(xué)習(xí)交流,Verifying a VLAN,wg_sw_a#sh vlan 9 VLAN Nam

9、e Status Ports - 9 switchlab2 Enabled - VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 - 9 Ethernet 100009 1500 0 1 1 Unkn 0 0 -,wg_sw_a#show vlan vlan#,16,PPT學(xué)習(xí)交流,Modifying a VLAN Name,vlan vlan# name vlan-name,wg_sw_a#conf terminal Enter configuration commands, one per line. End with

10、CNTL/Z wg_sw_a(config)#vlan 9 name switchlab90,wg_sw_a#show vlan 9 VLAN Name Status Ports - 9 switchlab90 Enabled -,wg_sw_a(config)#,17,PPT學(xué)習(xí)交流,Assigning Switch Ports to a VLAN,vlan-membership static vlan# | dynamic,wg_sw_a(config-if)#,18,PPT學(xué)習(xí)交流,Assigning Switch Ports to a VLAN,wg_sw_a#conf termina

11、l Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#interface ethernet 0/8 wg_sw_a(config-if)#vlan-membership static 9,vlan-membership static vlan# | dynamic,wg_sw_a(config-if)#,19,PPT學(xué)習(xí)交流,Verifying VLAN Membership,wg_sw_a#show vlan-membership,20,PPT學(xué)習(xí)交流,Verifying VLAN Membership,wg_sw_a#show vlan-membership Port VLAN Membership Type Port VLAN Membership Type - - 1 5 Static 13 1 Static 2 1 Static 14 1 Static 3 1 Static 15 1 Static 4 1 Static 16 1 Static