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Untitled Document
"Switching Technologies" ??????????????????? OSI Layer 2
โดย Support วันที่ 09/08/2548 14:14
 

?????????????????????? ???????????????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????? Switching ???????????????????? Layer 2 ??????? OSI 7 Layer Model  ??????????????????????????????????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????? ???????????????????????????? ??????????????????????????????????????????????????????????? ????????????


Link Aggregation (Port Trunking) Technology:

????????? Link Aggregation ??????????????????????????????????? Port Trunking ??????????????????????? IEEE 802.3ad ???????????????????????????????????????????????????? Bandwidth ?????????? Switch ????????????????????????????????? Switch ??????????????????? 1 ????? ???????????????? Link Aggregation ???? ??????????????????????????? ?????????????? Switch ???????? ?????????????????????????? Switch ????????????????????????????????????????? ??????????? Bandwidth ???????????????????????? ??????????????? ????????????????? Fast Ethernet Switch ???? 2 ??? ????????????????????????? Switch ???? 2 ?????????????????? 10/100 Mbps ???????? 1 ????? ????????????????????????? Bandwidth ????? 100 Mbps ???????????????? Link Aggregation ???? ??????????????????????? Switch ???? 2 ?????????????????????????????????????????????? (????? 4 ?????) ??????????????? Bandwidth ???????????????????????????? (400 Mbps) ????????????????????????? "?????" ???? Bottleneck ??????? ?????????????????? Link Aggregation ?????????????????????????? Loop ?????????? Switch ????


Port Mirroring Technology:

????????? Port Mirroring ?????????????????????????????????????????????????????????????????????????????? ????????-?????????????????????????????????????? Switch

?????????????????????????? Port Mirroring ??? ????????????????????????????????????? ???????????? ????????????????? Switch ???????? ???????? 1 ??? Switch ?????????? Workstation A, ???????? 2 ??? Switch ?????????? Workstation B  ? ??????????????????????????? Workstation A ????????-???????????? Workstation B ???????????????? Traffic Analyser ??? ????????????????????????-??????????????????? Workstation A ??? B ???????????????? Port Mirroring ????????????????????????????????????????? Switch ??????????????????????????? Mirror Port (?????????? 5) ????? Traffic Analyser ???????????????????????????? ????????????????????????????????????????????-????????????????????????????? Workstaion A ??? B ???


Flow Control Technology:

????????? Flow Control ??????????????????????? IEEE 802.3x ???? Flow Control ???????????????????????????????????????????????????????????????????? Hang ?????????? Switch ?????????????????????????? Flow Control ???????????????????????????????????????????????? Switch ???????????????????????????? ?????????????????????????? Flow Control ???????????????????? 2 ????????????? ???????????????????-??????????????????????

1. Flow Control ?????????????-???????????? Full Duplex

??????? Switch ???????????????????????????????? "Pause MAC Frame"  ??????????????????????????????????????????? ????????????????????????????????????????????????????????????? ????????????????????? (???????????????????????? ??? Switch ????????????????) ???????????????????????? ??????????????????????????? ??????????? ????????????????????

2. Flow Control ?????????????-???????????? Half Duplex

??????? Switch ??????????????????????????? "Jamming Signal" ??????????????????????????????????? ????????????????????????????? Collision ????????????????????? ??????????????????????????? ???????????????????????????????????????? Jamming Signal ??????????????????????????????????????? ????????????????????????????????????????


Spanning Tree Protocol:

????????? Spanning Tree Protocol ???????????????????????????? IEEE 802.1d ???????????????????????????????????????????????????????????????????????????????? Redundancy ?????????????????????????????

?????????????????????????? Spanning Tree ???? ??????????????????????????????????????????? Switch ???????????????????? Topology ????????????????????????????? Loop ??????????????????????????? Switch ????????? Root ???? 1 ??? ?????? Spanning Tree Protocol ??????????? Disable ????????????????????? 1 ??????????????????????????????? ???? Redundant Link ?????????????????????????????????????-??????????????????????????? Looping ???????????????????????????????????????? (Main Link) ????????-????????? ????????????????????????????????????????????????????????? Spanning Tree Protocol ??????? Enable ?????????????????????????????????????????? ?????????????-?????????????????????????????????????????? ???????? Main Link ?????????????????????? ????????? Spanning Tree ???? Disable Redundant Link ????????????? Main Link ????????-??????????????


Port Security Technology:

??????????????? Port Security ???????????????????????????????? Switch ????????????????????? ??????????????????????????????????????????????????????????????? Switch ????????????????????????? ???????????????????? MAC Address ????????????????????? Switch ??????????????????????????????? ????????????? Enable ????????? Port Security ?????? ???????????? MAC Address ?????????????????????? ???? ????????????????? ????????????????????????????????? ????????????????????????? MAC Address ??????????? Port Security ????????????? ???????? ??????????????-??????????????????????? ?????????????????? ???????? MAC Address ??????????????? ????????????????????????????-???????????? ??????????????????? ?????????????????????????????????????????????????????????????????????????????????

?????????????????????????????????? Switching ???????????? ??????????????????????? ??????????????????? ????????????????????????????????????????????? ????????????????????? ??????????????????????????????????????????????? ?????????????????? ????????????????????????????????? ?????????????????????????????

??????????????????????????????????????????????????????????? ????????????????????? ???????????????????????????? ???????????????????? ???????????????????????????????????????? http://www.alliedtelesyn.com  ??????????????????????? Technical Support ??? MVT ??????????????  ???. 0-2993-8989  ??????????????????????

????????? : Allied Telesyn International (Asia) Pte. Ltd.

 
 
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