??? NetSim-VLAN

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??? NetSim-VLAN

• ????
• ??Cisco???VLAN???,????VLAN
• ??VTP???????VTP

2
????

• ??????(VLAN)???????????????,??????????????????,???
  ????????????,VLAN?????????????????
• ???LAN?????????????,??????????????????????????????
  ,?????????????????,???????????????????????????????
  ??????,???LAN??????????????????????????????,??,???
  ???????????????????,?????????????????????

3
VLAN

• VLAN??????LAN???????????(???????????),?????????VLA
  N?????????,VLAN??????????????????,????????????????
  ?,????????????,??????

4
VLAN
5
LAN?VLAN???????

• VLAN?OSI??????2???3?????
• VLAN???????3???????
• VLAN??????????????
• ????????????VLAN?
• VLAN??????????????????????????????

6
VLAN

• ?????????,??????????????????????,?????????????????
  ??????,VLAN???????????????????????WAN,??????

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VLAN
8
VLAN????

• ???????????VLAN?,??????VLAN??????????,????????VLA
  N ID??????????VLAN???,?????????????????????,??????
  
• ????????????
• VLAN??????
• ??VLAN?????????
• ????????????????

9
VLAN????
10
VLAN????

• ????VLAN?????????VLAN?????????????????VLAN??,????
  ???????VLAN????????,???????????,??????????????,??V
  LAN???????????,????????????????

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VLAN????

• ?????VLAN?,?????????????VLAN???VLAN?????MAC??????
  ????????????????????????????????,?????????VLAN????
  ???MAC????,??????????????VLAN?????????????????????
  ??,?????????????????????????????,??????????????,?
  ?????VLAN????????????????????????,?????????

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VLAN????

• ???LAN?????????????????????????,?????????????????
  ??????sniffer?????,???????????????
• ?????,????????????????,???????????????VLAN,???????
  ????????,????????????????
• ??VLAN??????????
• ???????????VLAN???????????????? 
• ???????????????????VLAN?

13
????

• ???????,??VLAN???IP address????
• Switch 1-port 23??Router 1-f0/0 ??(trunk)
• Switch 1-port 24??Switch 2-port 24 ??
• Switch 3-port 23??Router 2-f0/0 ??
• Switch 3-port 24??Switch 4-port 24 ??

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????
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????LAN??

• LAN1????Sales,Switch 1-port 1,port 6-8,IP
  address??192.168.11/24
• LAN3????Admin,Switch 1-port 2-5,Switch 2-port
  1,IP address??192.168.13/24
• LAN8????Engineer,Switch 1-port 8-10, Switch
  2-port 2-10,IP address??192.168.15/24
• ????port??LAN1??

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????LAN??

• LAN1????Account,Switch 3-port 1-5,Switch 4-port
  6-11,IP address??192.168.12/24
• LAN2????Finance,Switch 3-port 6-10,Switch 4-port
  1-5,IP address??192.168.14/24
• ????port??LAN1??

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PC??

• PC2IP address192.168.11.1/24,Gateway192.168.11.
  254
• PC3IP address192.168.13.1/24,Gateway192.168.13.
  254
• PC4IP address192.168.13.2/24,Gateway192.168.13.
  254
• PC5IP address192.168.18.1/24,Gateway192.168.18.
  254
• PC6IP address192.168.12.1/24,Gateway192.168.12.
  254
• PC7IP address192.168.12.2/24,Gateway192.168.12.
  254
• PC8IP address192.168.14.1/24,Gateway192.168.14.
  254
• PC9IP address192.168.14.2/24,Gateway192.168.14.
  254

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??VLAN

• ??????????show vlan????????VLAN????,?????????????V
  LAN 1?
• ???????????vlan id name vlan-name????VLAN,????????
  ???switchport access vlan id????????VLAN,????range
  ?????????????VLAN?

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??VLAN
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??VLAN

• ???PC?IP address?????PC2(192.168.11.1)???ping?PC3(
  192.168.13.1),?????,??PC2?PC3?????Switch
  1????????????????????????????????

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??? VLAN ??

• ????????????????????
• ????(access link)???????????VLAN??,???????,????
• ????(trunk link)?????VLAN,??????????,?????????,??
  VLAN???

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????(trunk link)
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??VLAN????

• ???VLAN???????????
• ??????(Inter-Switch Link,ISL)Cisco???????,???????
  ??Gigabit???????,??2950??????!
• IEEE 802.1QIEEE?????,?????
• ???????????????,??VLAN????,??????????????(subinter
  face),???????ISL?802.1Q???IOS??????????????????,?f
  0/0.1, f0/0.3,?? ?encapsulation????????VLAN??????
  ????

24

• Router 2????

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Router 3????
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Switch 3????
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PC2?PC6(192.168.12.1)tracert
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??VTP

• VLAN??????(VLAN Trunking Protocol,
  VTP)???????????????VLAN,?????????
  VLAN,??????????VTP???????????????,??????Switch
  1-port 24?Switch 2-port 24 ???Switch 3-port
  24??Switch 4-port 24 ???

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VTP 3???????
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VTP 3???????

• ???(server)???????,???????????????????VTP????VLAN
  ,???????????????????????VTP???
• ???(client)???????VTP??????,???VLAN,?????????
• ??(transparent)???VTP????,???VTP???

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VTP domain

• VTP domain????????domain??????????????????LAN?VTP
  domain??Taipei,Switch 1????,????LAN?VTP
  domain??Shinchu,Switch 3????,?????show vtp
  status???VTP????
• VTP???
• Maximum VLANs supported locally???VLAN???
• Number of existing VLANs????VLAN?
• VTP Operating ModeVTP?????

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Switch 1 VTP????
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Switch 2 VTP????
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Switch 2 VTP????
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Switch 3 VTP????
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Switch 4 VTP????
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PC2?PC4(192.168.13.2)?PC2?PC8(192.168.14.1)tracert
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STP??

• STP(Spanning Tree Protocol?????),???????????????S
  TP???
• ?STP???????,????????????,???????,STP?????????????,
  ?????????????????STP?????,?????show spanning-tree
  vlan vlan-number??????

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STP??
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STP??
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????

1. ??LAN?VLAN????
2. ?????VLAN???
3. ??trunk,???????????
4. ??VTP????????????????
5. ????????????VLAN,????????????
6. ????ISL?
7. VLAN?VLAN??????????????
8. STP???????