LAN Switches
Shared LAN Media
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Bandwidth Hogs
- ¬Y¤@¾÷¥x´X¥G¦û¥Îºô¸ô¤¤©Ò¦³¦³®ÄBANDWIDTH
- Servers ¸g±`¤j¶q®ø¯Óºô¸ô¤¤BANDWITCH
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What is a Switch?
- Is it a Repeater?
- Is it a Bridge?
- Is it a Router?
Switch forwarding §Þ³N
- Store and Forward
- Makes the forwarding decision after receiving the entire
frame
- Cut Through
- Makes the forwarding decision after receiving the destination
MAC address
- Fragment Free (Modified Cut Through)
- Makes the forwarding decision after receiving 64 bytes of
the frame
Switch Technologies
Switch ³N»y
- Latency ¶Ç°e©µ¿ð
- Single MAC or Multi-MAC
- Spanning Tree Implementation
- Management
- Full Duplex Ports
- Virtual LAN’s
The Real World
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- µLªk¬Ý switch ¤º³¡±¡ªp
- ¨º¤@ port ¥Ø«e¨Ï¥Î¶q³Ì¤j?
- ¿ù»~¨Ó·½¦p¦ó°lÂÜ?
- ¼s¼½·¼É
- ºô¥dÂà´« tables ¯}Ãa
- Switch ¨C¤@ port ³s±µ ¨º ´X¥x?
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- ¦¬¶°¸ê®Æ¨Ã¤ÀªR¬G»Ù¼x¥ü
- §â°ÝÃDÁY¤p½d³ò¤ñ¦p:°Ï¬q©Î HUB ©Î User
- §P§O°ÝÃD¬O H/W or S/w
- ¸Ñ¨M°ÝÃD
- ½T©w°ÝÃD¯u¥¿¸Ñ¨M
Case Study 1
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- µ²ºc¤Æ§G½u¨t²Î(°ò¥»«¬¡¥¼W±j«¬¡¦ºî¦X«¬)
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