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????Hub?????

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Title: PowerPoint Presentation Last modified by: wanglongjie Created Date: 1/1/1601 12:00:00 AM Document presentation format: Other titles – PowerPoint PPT presentation

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Title: ????Hub?????


1
?4? ??????????
2
????
  • ??????????,??40?????
  • ?????????????????????
  • ??????????????????????
  • ??????????????
  • ?????????????

3
????
  • ????Hub?????
  • ??????Hub???????????
  • ????Hub(?????)????,??40??????
  • ?ping??????????

4
?????( LAN--Local Area Network)
  • ??????????????????,?????0.1 1km?
  • ?????(Broadcast),????????????????,???(Multicast),?
    ????,?????????????
  • ????????????????????????????(MAC- Medium Access
    Control )?
  • ???????????(Ethernet)?

5
4.1.1 ??????
  • 1. ?????
  • ???????????????
  • ????????
  • ???????

6
4.1.1 ??????
  • 2. ????
  • ??????????????????
  • ????????
  • ??????,??????
  • ???????????????????

7
4.1.1 ??????
8
4.1.1 ??????
  • 3. ??????
  • ??????????????
  • ?????????????????
  • ???????

9
4.1.2??????
  • ???????????????
  • ?????????????????

10
4.1.2 ??????
  • ??????
  • ??????????
  • ????????/?????? (Carrier Sense Multiple
    Access with Collision Detection,??CSMA/CD)
  • ????,????,????,????
  • ?????????????

11
4.1.2 ??????
12
4.1.3 ???
13
4.1.3 ???
  • ??????????,?????????
  • ??????
  • ???????????????????,????????????
  • 512Bit??????????????????
  • ??????????????????,????????????,??????
  • ?????????????????

14
4.2.1 ??
  • ??????10Mbps?100Mbps?1000Mbps
  • ????????ISA???PCI???PCMCIA???USB????
  • ?????????????????????

15
4.2.2 ???
  • ??????Hub
  • ????????????????????,??????
  • ????????????
  • ????????????????????????

16
4.2.2 ???
  • ?????????
  • ?????????????(?0?1?????)????????????
  • ???????????? ,?????????

17
4.2.3 ???
  • ????OSI????????(?????)
  • ??????
  • ??????????
  • ????
  • ???????????????????????VLAN?

18
4.2.3 ???
  • ?????MAC???????????????
  • ?????????????,????????
  • ???????????????????,?????????????,??????????

19
A??B???,C????D
20
(No Transcript)
21
????????
22
4.2.3 ???
  • ????????
  • ????????????????
  • ?????????MAC?????
  • ??????????63??(???MAC???)?????

23
4.2.3 ???
  • ????

24
4.2.3 ???
  • ???????

?? ???
???? ? ?
???? ? ?
??????? ? ?
25
4.3????????
  • ICMP ??(Internet control message protocol-
    Internet?????????)
  • ?? ????????
  • ???????
  • ICMP?????????????????

26
4.3????????
27
4.3????????
?? ?? ??
???? ?? 3 ??????
???? ?? 4 ????
???? ?? 11 ????
???? ?? 12 ????
???? ?? 5 ????
???? 8?0 ???????
???? 13?14 ???
???? 17?18 ????
???? 10?9 ????????
28
4.3????????
  • ICMP????
  • ???????????   
  • ??????????????????
  • ???????ICMP????????
  • ICMP????????????????????????????????????????????
    ??

29
????????????
30
4.4.1 ??????????
31
4.4.1 ??????????
  • ???????,???????????????????????,???????????????,??
    ??????????????

32
4.4.2 ????????????????
33
4.4.2 ???????????????
  • ??????10??? ?
  • ??????????????????100?,?????????200??
  • ???????????????????? ?

34
4.4.3????????????????
35
4.4.3 ???????????????
  • ?????????,?????????????????????
  • ??????????????,??????????
  • ?????????????

36
4.4.4 ??????
  • ??IP??
  • ??????
  • ??????
  • ??DNS?????

37
4.4.4 ICMP ??????
  • Ping??????
  • Ping ?? ?????

38
4.4.4 ICMP ??????
  • ??PING???????
  • Ping 127.0.0.1-??TCP/IP??????
  • Ping ????-????????
  • Ping ????-?????????
  • Ping ???????-??????????
  • Ping ???????-??DNS??????????

39
4.4.4 ICMP ??????
  • TRACERT

40
4.4.4 ICMP ??????
41
4.4.4 ICMP ??????
  • ?TRACERT ???????
  • ??????????
  • Windows?TRACERT????3??????

42
4.4.4 ICMP ??????
TRACERT ?? ???IP??
43
  • C\gttracert 168.95.192.1
  • Tracing route to hntp1.hinet.net 168.95.192.1
  • over a maximum of 30 hops
  • 1 lt10 ms lt10 ms lt10 ms 203.74.205.3
  • 2 lt10 ms lt10 ms lt10 ms c137.h203149174.is.net.t
    w 203.149.174.137
  • 3 50 ms 60 ms 60 ms 10.1.1.70
  • 4 60 ms 60 ms 60 ms c248.h202052070.is.net.t
    w 202.52.70.248
  • 5 290 ms 60 ms 60 ms ISNet-PC-TWIX-T3.rt.is.n
    et.tw 210.62.131.225
  • 6 70 ms 50 ms 70 ms 210.62.255.5
  • 7 50 ms 70 ms 51 ms 210.65.161.126
  • 8 51 ms 50 ms 50 ms 168.95.207.21
  • 9 60 ms 50 ms 50 ms hntp1.hinet.net
    168.95.192.1
  • Trace complete.

44
4.4.4 ICMP ??????
  • Tracert?????
  • ????,?????????????
  • ?????????????
  • ???????????IP???

45
????????
46
??
  • ???????????????????
  • ???????????????????????????????????????????
  • ????????????????
  • ???????????,????MAC????????????,??????????????????
    ?,?????????????????,??????????????????????,??????
    ???,?????

47
??
  • ?????ICMP?????????????
  • ??IP?????????????????,???????????????????????ICMP
    ????????????????IP??????

48
??
  • ????????????????????????????????????
  • ?PING 127.0.0.1????????????
  • Ping ??IP?? ????????????
  • Ping ??IP?? ????????????
  • Ping ??IP?? ?????????????

49
??
  • ??????
  • ??????????
  • ????????
  • ?????????
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