??20 NetSim-Cisco?????

1
??20 NetSim-Cisco?????

• ????
• ??Cisco?????????????
• ???IOS??????????????????????????????????

2
????

• ????LAN???Ethernet?Fast Ethernet?Gigabit
  Ethernet?ATM?Token Ring??????
• ?????????,??????(10/100/1000 Mbps)????
• ?????????????????,?????????(Auto-Negotiation)?????
  ????????????????????,????????????,???????????????
  ????????

3
??????

• ??????????????,????????,?????????????
• Layer 2 Switch
• ???????????????(MAC?)????????????????,????????????
  ??(Learning)???????????MAC??,?????MAC??????????(De
  stination AddressDA)???????????(???),???(???)????
  ????,???????????(???),??????????Layer
  2???????????????,???????,??????????????(?????),???
  ?????????

4
??????

• Layer 3 Switch
• Layer 3 Switch???IP Switch?Switch
  Router(??????),?????????????????(?IP),????????????
  ??????,?????????????????????????,Layer 3
  Switch???????(?????ASIC??)?????????????,???Layer
  2?????,????????????????(Million packet per
  second)????,???????????????????(Fast
  Ethernet)???,??????????????(Gigabit
  Ethernet)???????

5
??????

• Layer 4 Switch (Layer 7 Switch)
• ???Layer 3???????????,??????????TCP?UDP??,????????
  ?????????????Qos???,??????????(voice??),????????
  ?????????

6
???????

• ????????????????(Bridge)?????,??????????IEEE802.3?
  IEEE802.3u,???????????(CSMA/CD)?
• ????????????????,?????????????????,??????????,???
  ?????,???????,???????????????????,????????(Cut
  through?Store-and-forward?Fragment
  free),????????????,????Auto-Negotiation??????,????
  ?????????????

7
???????

• ??????????,????????????,????????VLAN(Virtual
  Lan??????)?Layer 3?????,????????????????????
• ????,?????????????(fast ethernet,???100
  Mbps)???????????MAC??,???????????????,????????????
  ?????????,???????????????

8
???????

• ???????
• ????????????,???????
• ????????,??????????,????????????
• ??????????
• ???????
• ???????????????????????,????????????????????????,?
  ????????????????,???????????,???????

9
????

• ?????????
• ???????????????,?????????????,??????,??????Switch
  1?????????Shinchu_LAN????????????????????,??????,?
  ??????

10
??????

• MOTD??????????,??????????????,???????????,????????
  ???????????????????? Enter,???????,??????? Enter?

11
??????

• ????????????,???show running-config?show
  interface???????????

12
????

• ??????????(console 0)?telnet(vty 0
  15)?????,????????,?????????

13
?????????

• ??????????,????????????enable secret??,???????????
  ?????????enable passwd?enable secret?????????(??
  ???),?????????????????????,???????????

14
??IP???????

• ????????IP????????????,???????????????????,???????
  IP???????,?????????,???ip address??????IP????ip
  default-gateway?????????,????????????????,????????
  ??no shutdown???,?????????????Switch
  1???vlan1?IP???192.168.2.253,Netmask?255.255.255.0
  ,????????????????192.168.2.254Switch
  2???vlan1?IP???192.168.3.253,Netmask?255.255.255.0
  ,??????192.168.3.254?

15
??IP???????
16
????

• ?????show interfaces??????????,??????,???????show
  ip interface brief???,?????????????,??????????????
  ??????

17
ARP??

• ??????show arp??????ARP??,???????show
  mac-address-table??????????????????????,???switchp
  ort port-security maximum ltnogt?????????mac-address
  ????,?switchport port-security mac-address
  ltmac-addressgt???????ltmac-addressgt??????,??Boson
  NetSim for CCNP????????

18
????

• ???????????,???????,?????????????????copy
  running-config startup-config(copy run
  start),IOS?????????????NVRAM?,??????????????copy
  running-config tftp???TFTP?

19
????

1. ??????(collision domain)?
2. ????????????????????
3. ??????????????????????????
4. ?????????
5. ????????????
6. ????????????????????
7. ???????????????????????