TN307 ??????

1
TN307?????? 
?????????
???? ???
2
??? A ? ?????

• 935606 ???
• 935623 ???
• 935626 ???
• 935629 ???
• 935632 ???
• 935633 ???
• 935649 ???

3
????????
? RPR ? EOS ????????????????
? ??? EOS ? RPR ??????
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RPR ? EOS ???????????????? ?

• ?? RPR ?

• RPR ?????????????????????????????,???????? MAC
  ??RPR ?????,??????????,??????????? SDH/SONET ????

• ?? RPR ??? SDH ? MSTP ,???????????????????????
  ? ?? SDH ???? TDM ?????,???????????? RPR
  ???????????????

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• ?????(Resilient Packet RingRPR)

• ??
• IEEE 802 ??? 2000 ? 3 ??? RPR ????
• 2000 ? 12 ??? IEEE 802.17 RPR ????(Working
  Group)?????????
• 2002 ? 2 ?????????Draft 0.1
• 2004 ? 4 ???? Draft 3.3,????? RPR ???????,??
  2004 ?????
• 2002 ? 11 ????? 802.17a ???????? RPR ???802
  ???????,??????????
• 2004 ? 1 ???? RBR(Resilient Backplane
  Ring)???????RPR ??(Backplane)??????

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• 2. ????
• RPR ???????????,?????????????????,????????,??????
  ???????,???,?????,????,???????????,???????????????
  ??????,?????????????,?? RPR ??????(spatial
  reuse)???,????????????????????,?? SONET/SDH
  ???????

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RPR ??????

• ? ??????
• RPR ??????????????????????????,???????????????????
  ??????????,???????????????,??????????,????????????
  ??????,?? RPR ?????????? plug-and-play
  ???,??????????????????????,????????

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• ??????
• RPR ????????????????,????????????????????????,????
  ???????????????,??????????,???????????????????????
  ????,?????????????????????

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• ??????
• ????????????(Spanning Tree Protocol)? OSPF(Open
  Shortest Path First)??????????????(???????),RPR ?
  SONET/SDH ????????????????,??????? 50ms?

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RPR ???????
1??(ring wrap) ??????,??????????????????????
???
2 ??(packet steering) ???????????????????,????
??????????????????????

• ???????????50ms ???

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????

• RPR ????? packet-based ????????????????????,??????
  ???????????? SONET/SDH ?????????,?packet-based
  ??????????,??????????????????????????????????????,
  RPR ??????????,????????? RPR ?????

12
????????
???????????????,??????????????????????,????????
TDM ?????????? IP ????????????????? 27
???????????????,??? 2/3 ????????????? QoS
????????,???????????????????? BOD ?????????
13
????????????,RPR ??????????????????? ?Infonetics
Research???????????????????,??? 60 ? ????????
2005 ????????????? RPR ??? ?? 2003 ?,?? RPR
????????????????
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RPR ??

• RPR ????????????????,??????????????????????????,?
  ?????????
• ????????? 1Gbps?2.5 Gbps ?10 Gbps,RPR ???????
  TDM ???,?????? IEEE 802.17?
• RPR ??????????????????????????? QoS
  ?????????????????????????,???????????TDM ??????

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• RPR ??????????????????,??? SDH ?????????,???? RPR
  ??? SDH ???????,??????????????
• SDH ???????????,? RPR ????????????????? ?
• RPR ????????,???????????????
• ?????? RPR ??,????????????????,? SDH
  ????????????????

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• ?RPR??,??????????MAC??,??????? 254
  ?,???????????MAC ???????????
• ?? RPR ???????????????????,?????????
  SDH????????IP ????????????RPR ????????????
  SDH????????
• ?????????????????,RPR ??????????? 50ms ???????

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• RPR ?????????????????,???????????,????????????????
  ,????????????? 95,??????????? 50 ?????
• RPR ????????????????????????????,RPR
  ????????????????????????????????,?????????????????
  ?,??????????????????????????

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• RPR ?????????????,???????????????,???TDM
  ???????????
• RPR ????????????????????,?????????????????,??,RPR
  ?????????????

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??? SDH - Ethernet over Sonet (EoS)
Next Generation SDH ??????

• Next Generation SDH (NG SDH) ????????????????,????
  ????PDH ?? T1/E1 ?????????,?????????????????????,?
  ???,????? 1310nm ???????????????????(Automatic
  Protection Switching),? Next Generation SDH ?????
  STM-1 ???,?????? 16 ? T1/E1 ???

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????

• Next Generation SDH ?????????????
• ?????????????????,?1.544/2.048 Mbps ? PDH T1/E1
  ??,????????????,??????????????????????????????????
  ,????????????????155.52M bps?

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• Next Generation SDH ??????????????????????????????
  ??????????????????????????

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(No Transcript)
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NG SDH ??????

• Next Generation SDH ???????????????????,??? NG
  SDH ??,??????????? T1/E1 ??,?????????????,????????
  ????T1/E1 ???
• EOS Mapper ??? NG SDH ??????????,???? Ethernet
  over SONET/SDH ??,????????? 10/100M? Ethernet
  ??,?????Next Generation SONET/SDH?????,???????????
  ? E1/E3 ???

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????
1. ??
??????????? IP ???????????????,????????????????
?????,????????????????????   ??,?????????????????
?????????????,???????????
25
???????????????????????????????????????????
???????????????????????????????
??????????????????????????,??????????????????
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SDH ???

• SDH ????(?????)???????????????????????????????????
  ??????????????,SDH?????????????
• ?????????????99.999?????50??????????????????????
  ??
• ??,SDH ??????????????,???????,?? ATM ? IP
  ??,???????????? QoS ???

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??? SDH ???????

• ??? SDH ????????????,????????????????????
• ??????????????????2Mbps?34Mbps?165Mbps
  ????????????????,?????????????????????????????????
  ?????????,??????????

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????

• ????????(???????????????)
• SDH ??????????????????????????

?????SDH Ethernet over Sonet (EoS)
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????

• ???????????????????????????? SDH ??????
• ????????????????????????

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EOS ??
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• EOS(Ethernet over SDH/ SONET)
• ??????????????????????????????,?????? ??? ??
  WAN/MAN,??,?????????????
• EOS ?????????????????????,??????????????????????,?
  ???????????????

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Ethernet over SDH ???????

• ????????????????????????
• LAPS??(ITU-T X.85)
• PPP??(IETF??RFC)
• GFP??(ITU-T G.704)

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LAPS

• Ethernet over SDH ??????? IP ??????????,?????????
  ??????,??????????????????????????,???????????????
• Ethernet over SDH ??????????????????????? SDH
  ??????????????????????,?????????????????????

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• Ethernet over SDH ????????? SDH
  ??(?ADM)?????????????????,???????????????VC ??????

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• ???,Ethernet over SDH ??????(??ITU-T X.86 P6
  ?4)???
• ???? IPv4 ? IPv6
• ????????????LLC/MAC/LAPS
• ???? SDH ???
• ?? LAPS ? HDLC ?????,???????????????

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Ethernet over SDH ???????????
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PPP
????? PPP ?????????????????????,??????????????,???
SDH ?VC ?,???? SDH ??????????
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GFP
GFP ??????????(Generic Framing Procedure),?????
SDL ?????????????????,?????????????????????????
??????????????? ??,ITU-T G.7041 ??????????
.GFP
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??? EOS ? RPR ??????
RPR ??????????
??GFP??,EOS ??????????,?????????
MAN/WAN,????????????????????????????,GFP?LAN?SAN??
??Internet ?????????????????????????????? GFP
??,??LCAS,VC???,?????? SDH ????????,??????????????
(Ethernet Private Line)?????(Virtual Private
Line)???????,??????????????????????????????
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????????????????????,???? SDH ???????????????????
???????????????????SDH?????,? SDH
?????????????????????????????????????,???????????
??????Ethernet over SDH ?????????????,????????????
SDH ???????????????
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Ethernet over SDH ??????????????????????????????,?
??????????,???????????????????????,??? SDH
??????????????????? ??????????????????????? SDH
????????????????????? Ethernet over SDH ???????
SDH ??????????,? SDH ??????????
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RPR ?????????
????????????????????????,????????????? ??,????????
??????????,???????????????????????????????? ??????
???,???????????????????????(???)??????????????????
???????
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??????????? SONET ???,??????????????????????? ????
?(RPR)????????????????????(MAC)??? IEEE??? RPR
???????,?????????????
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(No Transcript)
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RPR ??????????????????????? RPR
????????/IP?????,??????? SONET ?????????????????RP
R ?????????,??????????????????????????? ???????,RP
R???????50????????
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?? RPR ????? MAC???,?????????? SONET
?????????? ??,????? SONET ????? RPR
???VoIP???????????????????????????????????????????
????,?????? RPR ??????????
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RPR ?????????????????????????????,????????????? RP
R ??????????? RPR ????????????????,RPR
??????????????,??????????????????????? RPR ???
CIR ?????????,??????????,??????????? ?????????????
CIR,?????????????????????????????,???????????????
,????????????