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Multi-Layer Switch Characteristics - ?????? 2
โดย Support วันที่ 30/11/2548 14:00
 

?????????? ?????????????????????????????????????? ??????????????????????????????????????????????????? Multi-Layer Backbone Switch ????????????????????????????????????????????????????????????????????????????????????????????

????????????????????????????????? 2 ???????????????? ?????????????? High Performance ??? Scalability ??????????????????????????????????????????????? ?????????? Multi-Layer Switch ????????????????????? Backbone  ???????????????? ?????????????????????????????????????


3. Availability & Resilience

??????????????????????????????????????????????????????????????????? ???????????????????????????? Multi-Layer Switch ???????????????????????????????? ????????? Downtime ?????????? ??????????? Multi-Layer Switch ????? ???????????????????????? ??????????

     3.1  Rapid Spanning Tree Protocol

  • Rapid Spanning Tree Protocol (RSTP) ?????????????????????????????? IEEE 802.1w ???????????????????????????????????????????????????????????????????????-????????? ???????????????????????????????????-????????????????????????????????????????????????-???????????? ??????????????????????????????????????????????? ???????????????? Enable ????????????????????????????????????????? (Recovery) ???? ??????????????????????? 5 ??????????????????? RSTP ???????????????????? Spanning Tree Protocol ?????????????? ??? IEEE 802.1d ?????????????????????????? Recovery ????????????????????????????????? 30-40 ?????? ?????????????????????????


     3.2  Virtual Router Redundancy Protocol (VRRP)

  • VRRP ?????????????????????????????? RFC 2338  ???? VRRP ??????????????????????? Backup ????????????????????????????? LAN ?????????????????????? (Master) ??????????????? (Backup) ??????????????? Gateway ????????-?????????  ????????????? Master ??????????????????? ???????????????????????-??????? Gateway ?????????? Master ???  ??????? Backup ??????? Take over ???????????? Gateway ?????????? Master ?????????????? ??????????????? Gateway ?????????? Backup ???


     3.3  Redundant Hardware

  • ???????????????????????????????????????????? Downtime ???????????????? ???????????????????????????????????? ???????????????? ?????????????????? Redundant Hardware ??????????????????????????????? ??????????????????????????????????
  • ????????????? Multi-Layer Switch ??????????????????? Backbone ???????????????????????? ??????????????? Redundant Processor ???? Switch Fabric ??????????? Processor ??????????????? Backup Processor ???????????????????????????????? ????????????????????????????????????????????
  • ?????? Processor ???? Switch Fabric ???????? ???????????????????????? ??????????????????????????????????????????????? Redundant ???? ?????????????????????????????????? (Power Supply) ???????????????????????????????? (Fan Tray)
  • ????????? Interface Line Card ????? ?????????????????????? ???????????????????????? Hot-Swap ?????????? Line Card ?? Line Card ???????????????? ???????????????????????????? Line Card ???????????????????? ???????????????????????????????????????????? ??????????????????????????? Line Card ????? ???????


4. Application Aware

????????????????????????????????????????? ????????????????????????????????????????? Multi-Layer Switch ??????????????????????????? Application ??????????????? Application Aware ????????????????????????? Applicaton Aware ???? ???????????????????????????????????????????????????????? ????????

     4.1  Quality of Service (QoS)

  • QoS ???????????????????????????????????????? Application ?????????????????????????? QoS ???? ??????????????????????????????? Application ??????????????? ?????????????????????????????????? Application ???????????????????? ??????????????????????????????? Bandwidth ??????????????????????????????????????????????? Application ????? ?????????????
  • QoS ????????????????????????????? 2 ??????? ??? ??????? IEEE 802.1p (CoS) ?????????? DiffServ DSCP


     4.2  Multicasting Protocols

  • Multicasting Protocols ???????????????????????????????? Application ??????????????-???????????? One-to-Many ??????? Many-to-Many ???????????????
  • ????????????????? Multicasting Protocols ???? ?????????????????????????????????????? Multicast ?????????????????????????????????????????? Multicast Group ???????? ????????????????? Multicast ???????????????????????????????? ???????????????????????????
  • Multicasting Protocols ??????????????? IGMP Snooping ???????????????? Layer 2  ?????????????????? DVMRP ??? PIM ???????????????? Layer 3 ????????????????


5. Security

???????????????????????????????????????????????????????????????????????? Multi-Layer Switch ????????? ???????????????????? ???? Security ??????? ???????? Security ????????? ??????????????????????????????????????????????????????????????????????????????

     5.1  Internal Threats

  • ???????????????????????????????????????????????? ???????????????????????????????????????? ????

    • Virtual LAN (VLAN): ???????????????????????? LAN ????????????????????? ???????????? ?????????????????????????????????????????????????????????????????????????????? ???


    • Access Control Lists: ??????????????????????????????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????? ???
    • Port Security: ???????????????????????????????????????????????? ????????????????????????????????????????? ??????????????????????????????? ??????? ?????????????????????????????????????????????? ???????-???????????????? ?????????????????????????? MAC Address ???????????????????????????????????????????????????
  • ????????????????????????????????????????????????????????????????????? ??????????????????? ??????????????? Firewall ??????????????????????????-????????? ??????????????????? ?????????????????????????????????????????? ????????????????????????????????? VPN ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????


???????????????????????????????????????????? 2 ??????????? ??????? Multi-Layer Switch ??????????????????????????????????? Backbone ???????????????????? ??????????????????????????????? ???????????? ??????????????????????????????????? (Management) ?????????????????????????????????????????????????????????? ????????? CLI (Command Line Interface), Web-Based Management ????????????????????????????????????????????????? (Network Management Software) ???????????? SNMP ???? ?????????????????? ????????????? Multi-Layer Switch ??????????????????????????? ????????????????????????????????????????????????? ???????????? ?????????????????????????????????????? ???????????????????????????????????????????????????????????????? ??????? ????????????????????????????????????????????? ???????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????? ??????????????????????????

??????????????????????????????????????????????????????????????????????? http://www.alliedtelesyn.com ????????????????????? Technical Support ??? MVT  ???. 0-2993-8989   ???? E-mail ????? smartcare@mvt.co.th  ?????????????????????? . . .

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

 
 
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