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Untitled Document
''EPSR'' ?????????????????????? Network Virtualization
โดย Support วันที่ 14/05/2552 11:14
 

?????????????? Trigger ????????????????? Dynamic Management ???????????????????????? Allied Telesis ???? ?????????????????????????????????? ????????????????????????????????????????????????????????????????????? ???????????????????????????? EPSR ?????????????????????????


EPSR: Ethernet Protection Switch Ring

EPSR ???????????? ? ??? Ethernet Protection Switch Ring ????????????????????????? Path Resiliency ????????????????????????????????????? Ring ????????????????? ? ????????????????????????? Ring Network ????????????????????????????????? EPSR ???????

??????????????? EPSR ???? ????????????????????????????????????? Ring ????????????????? EPSR Master Switch ???????????????? block ??????????????????????????????????????????????????? Ring ???????????????????????? ??????????????????????????????????????????????????????????????????????? ??????????????????????????????????? Master Switch ??????????????????????????? ‘Health-check’ ?????????????????????????????????????????????????? Ring ???? ??????????????????????????? Health-check ??????????????????????????????????? Ring ?????????????????????????????????? EPSR ??????? enable ???????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????? ?????????????????? enable ???????????????????????????????????????????????????????? block ???? standby ???????????????????????????????????????????????????????????????????????????????????????????

??????????? ????????????????? EPSR ???????????????????? Spanning Tree Protocol ?????????????????? ? ............ ?????????????? ????????????????????????????????? ? ??? EPSR ??????

EPSR ????????????????????????????????? ????????????????????????????????? EPSR ????????????????????????????????????????????????????? ? ????????????????????? ?????? Spanning Tree Protocol ???????????????????????? ???????????????????????????? ??????????????????? enable ?????????????????????????????????????????????????????????? (Recovery Time) ????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????? ?????????????????????????????????????????????????? ?????????????????????????????????? ?????????????????????????????????????????? Delay ???? ???????????? Multimedia ???? ?

??? Recovery Time ???????????????????? Spanning Tree Protocol (STP) ???? ? ????????????????????? 30 ?????? ??????????????????????? Rapid Spanning Tree Protocol (RSTP) ?????????????????????? 1-5 ?????? ????????? EPSR ????????????????????? 50 ms (milli-second) ???????? !!!

??????????? ???????? 50 ms ???????? ?????????????????????????????? ???????????????????????????????????? Link Resiliency ??? EPSR ???? ??????????????????????????? (Packet Loss) ????????????????????????????????????????????????? (Link Failure) ???????????????????????????????????????? Multimedia ?????????????????????????????????????????????????????????? (Delay Sensitive) ?????????????????????????? ??????????????????????????????????????????????????????????? 100 ms ?????? ?????????????????????????????????????????????????????????? EPSR  ??????????????????? EPSR ????????????????????????????? ? ????????????????????????????????? Link Resiliency ???????????????? ???????????????????????????????????????


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

 
 
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