ؠ

1
???????

• ?? ?? ??

2
?3? ???

• ????
• Ø         ???????????????
• Ø         CSMA/CD?????????
• Ø         ???????
• Ø         ?????????????
• Ø         ??????????

3
?3? ???
3.1 ????????
3.2 ????????/????(CSMA/CD)
3.3 ???
3.4 ???
3.5 ?????
3.6 ?????
??
4
3.1 ????????
3.1.1 ??????
3.1.2 ?????????????
3.1.3??????
??
5
3.1.1 ??????
???????????????????????????? ????
(1)?????????? (2)????? (3)??????
6
3.1.2 ?????????????
IEEE802????.???????????????????????,?????????(LLC)
?????????(MAC)?
7
3.1.3??????
?????(LAN)?????????,?????
?????????????????
8
(No Transcript)
9
1. ???
?????????????,?????????????????,??????????????
???? ??????????????????
10
2. ???
???????????????????,??????????????????
???????????
11
3. ??????
??????????????????????? (1)????? (2)??? (3)???
? ???? ? ?????? ? ??????? (4)???
12
(No Transcript)
13
4. ????
(1)NetBEUI?? (2)IPX/SPX?? (3)TCP/IP??
14
3.2 ????????/????(CSMA/CD)
3.2.1 CSMA/CD?????
3.2.2 CSMA/CD???????
3.2.3 CSMA/CD??????
??
15
3.2.1 CSMA/CD?????
????????/????(CSMA/CD)?????????????????IEEE802
.3???????????? CSMA/CD???????????????????,???
??????????????????????
16
CSMA/CD????
17
(1)????????????????????????????,???????????,?????
?? (2)????(??????)????????????????????????
????,???????,???????????
18
3.2.2 CSMA/CD???????
?CSMA/CD????????,??????????????
19
3.2.3 CSMA/CD??????
?????????????????????????
????????????????(?????)??????????????????
(1)????(?????? ) (2)???? (3)????
20
3.3 ???
3.3.1 ?????
3.3.2 ?????????
3.3.3 ????????(HUB)????
??
21
3.3.1 ?????
????????(Xerox)???Palo Alto????(??PARC)?1975??????
? 1980?9?,Dec???Intel????????????10Mbps??????????
DIX V1?1982?????DIX V2 . IEEE802????802????1983???
????IEEE??????,????802.3
22
3.3.2 ?????????
????MAC???????? DIX Ethernet V2?? IEEE?802.3??
23
(No Transcript)
24
(No Transcript)
25

• ?3-1 ????????

26
3. ?????????
??????????64??,???????6???????6?????/?????2????
??????46???FCS????4???
27
3. ?????????
802.3???????????????????MAC? (1)MAC??????????????
????? (2)??????????? (3)?????????FCS????? (4)??
???MAC???????????46 1500?????
28
3. ?????????
MAC????????????????9.6µs ??????51.2µs????????
29
3.3.3 ????????(HUB)????
????10BASE-T??(IEEE802.3),?????10Mb/s,????,???????
?,????????????
30
(No Transcript)
31
3.4 ???
3.4.1 ????????
3.4.2 ??????????
3.4.3 ????????
3.4.4 ????????
3.4.5 ??????
3.4.6 ?????????
3.4.7 ?????
32
3.4.1 ????????
1. ?????? ????????????????????????????
?????????????????? . ????????????????????????????
????????? ????????MAC????,??????????????????
33
2. ????????
??????????????????,????????????(???-MAC??)????,???
???MAC????????????,????????????
34
3.4.2 ??????????
(1)?OSI/RM???????? (2)???????????? (3)????????
(4)??????
35
3.4.3 ????????
1.???? Ø         ????? Ø         ??????
?????.
36
3.4.3 ????????
2.??? Ø      ??????????????,?????????,??????,????
??? Ø     (1)???? (2)????
37
3.4.4 ????????

• 1. ????
• 2. ??
• ????
• ?/?MAC????
• ??????
• ???
• ???
• ??????

38
3.4.5 ??????
1. ????????? ???????????????
39
3.4.5 ??????
2. ?????? 3. ??????? ?????????????
40
(No Transcript)
41
(No Transcript)
42
3.4.6 ?????????
43
3.4.7 ?????
???????????100Mb/s????,????????????1000Mb/s?????
1. ????? (1)100BASE-TX (2)100BASE-FX
(3)100BASE-T4
44
2. ??????
45
3.5 ?????
3.5.1 ????????
3.5.2 ??????????
3.5.3 ???????????
3.5.4 Cisco??????
3.5.5 Cisco???????????
3.5.6 ??????????????
3.5.7 ??Cisco??????VLAN???
??
46
3.5.1 ????????
1. ???VLAN ????????????,???????????????????
?????????????? ???????????????(??,????????)?????,
???????????????????
47
2. VLAN???? (1)??????????? (2)????????
(3)????????
48
3.5.2 ??????????

1. ???????VLAN
2. ??MAC????VLAN
3. ?????????VLAN
4. ??IP????VLAN
5. ?????VLAN
6. ?????????????VLAN

49
3.5.3 ???????????
??????????????????????4??????,??VLAN??(tag),??????
?????????????????
50
3.5.4 Cisco??????
1. 1900?? (1)???? (2)???? (3)???? 2. 2900??
(1)???? (2)???? (3)????
51
3.5.5 Cisco???????????
1. ???? ????????????,????????????
Routergt
52
3.5.5 Cisco???????????
2. ???? ????????????,?????????????????????????
???????????,??????????????,???debug?? . Routergt
enable Password(??????????) Router
53
3.5.5 Cisco???????????
2. ???? ???????,??????????????? Router
disable Routergt
54
3.5.5 Cisco???????????
3. ???? ???????,??????????????? Router conf
t Enter configuration commands,one per line. End
with CNTL/Z Router(config) (??????????)
55
3.5.5 Cisco???????????
????exit(??end?Cntl-Z),??????????????? Router(co
nfig) exit Router
56
3.5.6 ??????????????
http//www.boson.com/netsim
57
(No Transcript)
58
????????????? (1)????????????,?????????,?????????
??????????? (2)??????????????,??????? (3)?????????
?????????????,????????????????
59
1. ??????
60
1. ??????
61
1. ??????
62
1. ??????
63
2. ??????????????
64
2. ??????????????
65
2. ??????????????
66
3. PC?????????
67
3. PC?????????
68
4. ????IP????????????? gt enable Router
configure t Router(config) interface s0
router(config) ip address 211.85.203.22
255.255.255.0 router(config) no shut
???? router show interface S0
69
3.5.7 ??Cisco??????VLAN???
1. 1900?????????? (1) ????
70
3.5.7 ??Cisco??????VLAN???
1. 1900?????????? (2) ???? ip
address IP?? ???? ip address
211.85.203.22 255.255.255.0 (3) ??????
ip default-gateway IP?? ip
default-gateway 211.85.203.254 (4). ????????
duplex auto full full-flow-conrtol
half
71
3.5.7 ??Cisco??????VLAN???
1. 1900?????????? (5) ??MAC???
72
3.5.7 ??Cisco??????VLAN???
(6) ????????????????? ? show
ip?????IP??????? ? show running-config?????????
?,???????????????? ? show interface?????????????
?? show interface e0/8 show interface
fa0/26
73
3.5.7 ??Cisco??????VLAN???
2. ??VLAN?? (1) ??VLAN Vlan vlan_id
name vlan_name (config) vlan 20
name liubing (2) ????????VLAN
vlan-membership static vlan_id
74
3.5.7 ??Cisco??????VLAN???
3. ??VLAN??
75
3.5.7 ??Cisco??????VLAN???
3. ??VLAN??
76
3.5.7 ??Cisco??????VLAN???
3. ??VLAN??
?? IP ?? ????
PC1 172.16.1.2 255.255.255.0 172.16.1.1
PC2 172.16.1.3 255.255.255.0 172.16.1.1
PC3 172.16.1.4 255.255.255.0 172.16.1.1
PC4 172.16.1.5 255.255.255.0 172.16.1.1
PC5 172.16.1.6 255.255.255.0 172.16.1.1
PC6 172.16.1.7 255.255.255.0 172.16.1.1
77
3.5.7 ??Cisco??????VLAN???
3. ??VLAN?? ? ????PC1????IP?????????????? cgt
ipcofing /ip 172.16.1.2 255.255.255.0
cgt ipcofing /dg 172.16.1.1
78
3.5.7 ??Cisco??????VLAN???
3. ??VLAN?? ? ?????,??????????? enable config
terminal hostname liubing vlan 2 name
vlan2 interface ethernet 0/8 vlan-membership
static 2 exit
interface ethernet 0/9 vlan-membership static 2
exit interface ethernet 0/12 vlan-membership
static 2 exit
79
3.5.7 ??Cisco??????VLAN???
3. ??VLAN?? (2) VLAN?????
80
3.5.7 ??Cisco??????VLAN???
3. ??VLAN?? ? ??VLAN2?????
81
3.5.7 ??Cisco??????VLAN???
3. ??VLAN??
82
3.5.7 ??Cisco??????VLAN???
3. ??VLAN??
83
3.5.8 ??Cisco??????VLAN???
1. VTP???? ???????????3?VTP???????? (1)?????
(2)????? (3)????
84
3.5.8 ??Cisco??????VLAN???
2. VTP????? (1)??VTP???? vtp server client
transparent (2)???? vtp domain
domain_name 3. ??trunk?? trunk??????????? trunk
on auto desirable nonegotiate
off
85
3.5.8 ??Cisco??????VLAN???
4. ???????????VLAN??????? (1)show
vlan????????show vlan?????vlan?????? (2)show
trunk AB?????????????Cisco 1900???????????????
???trunk???
86
3.5.8 ??Cisco??????VLAN???
5. ???????VLAN??
87
3.5.8 ??Cisco??????VLAN???
5. ???????VLAN??
?? IP ???? ????
PC1 211.85.203.211 255.255.255.0 211.85.203.254
PC2 211.85.203.212 255.255.255.0 211.85.203.254
PC3 211.85.203.213 255.255.255.0 211.85.203.254
PC4 211.85.203.214 255.255.255.0 211.85.203.254
PC5 211.85.203.215 255.255.255.0 211.85.203.254
88
3.5.8 ??Cisco??????VLAN???
5. ???????VLAN?? (1)PC??????? (2)??VLAN Switch1
 conf t Switch1 (config) vlan 10 name
lbvlan Switch1 (config) vlan 20 name
jlvlan Switch1 (config) exit ??show
VLAN????????VLAN,???? Switch1 show vlan
89
3.5.8 ??Cisco??????VLAN???
(3)??VLAN?????? ??????1?2???lbvlan?????? Switch1
conf t Switch1 (config)  int e0/1 Switch1
(config-if)  vlan-membership static 10 Switch1
(config-if)  exit Switch1 (config)  int
e0/2 Switch1 (config-if)  vlan-membership static
10 Switch1 (config-if)  exit Switch1 (config) 
90
3.5.8 ??Cisco??????VLAN???
(3)??VLAN?????? ??????3?4???jlvlan?????? Switch1
(config)  int e0/3 Switch1 (config-if) 
vlan-membership static 20 Switch1 (config-if) 
exit Switch1 (config)  int e0/4 Switch1
(config-if)  vlan-membership static 20 Switch1
(config-if)  exit
91
3.5.8 ??Cisco??????VLAN???
(3)??VLAN??????
92
3.5.8 ??Cisco??????VLAN???
(3)??VLAN??????
93
3.5.8 ??Cisco??????VLAN???
(3)???? ????Switch1???????????? Switch1 conf
t Switch1(config)  interface fa0/26 Switch1(confi
g-if)  trunk on Switch1(config-if) Z
94
3.5.8 ??Cisco??????VLAN???
(3)???? ?????Switch2???Switch2,????????????
conf t (config)  hostname Switch2 Switch2(config
)  interface fa0/26 Switch2(config-if)  trunk
on Switch2(config-if) Z ?????? Switch1  show
trunk a DISL stateauto , Trunking auto,
Encapsulation typeISL
95
3.5.8 ??Cisco??????VLAN???
(4)??VTP ? ?????Swithc1?VTP???? Switch1 conf
t Switch1(config)  vtp server ?
??VTP???lbdomain? Switch1 (config)  vtp domain
lbdomain ? ????????VTP??????? Switch1 show
vtp
96
3.5.8 ??Cisco??????VLAN???
(4)??VTP
97
3.5.8 ??Cisco??????VLAN???
(4)??VTP ? ????Switch2?,??VTP?? Switch2 conf
t Switch2(config) vtp domain lbdomain Switch2(co
nfig) vtp client
98
3.5.8 ??Cisco??????VLAN???
(4)??VTP
99
3.5.8 ??Cisco??????VLAN???
(4)??VTP
100
3.5.8 ??Cisco??????VLAN???
(5)????Switch2????????VLAN?? ??????1???lbvlan?????
? Switch2 conf t Switch2 (config)  int
e0/1 Switch2 (config-if)  vlan-membership static
10 Switch2 (config-if)  Z
101
3.5.8 ??Cisco??????VLAN???
(6)??PC???VLAN??????? ?PC1???PING??????PC2?PC5????
,???PC2?PC5????,?PC3?PC4?????? ????PC2?PC5????????
???????,???VLAN???????
102
3.6 ?????
3.6.1 ?????????
3.6.2 ??????????
3.6.3 ??????????
3.6.4 ???????
3.6.5 ????????
??
103
3.6 ?????
???????(Wireless Local Area Network,WLAN)?????????
???,??????????,????????????????,??????????????????
????????? (1)???? (2)???? (3)???? (4)????
104
3.6.1 ?????????
(1)?????? (2)?????? (3)?????
105
3.6.2 ??????????
??????????NIC???????????????????
??????????,????????????NIC??,?NIC????????????,????
???,??????,??????
106
3.6.3 ??????????
WLAN?????????????????(???????)???????(Infr
astructure Network)?
107
3.6.4 ???????
??????????,????????IEEE802.1l???????????HOMERF????

108
3.6.5 ????????
?????????????????(AP)??????????? ?