GMPLS Generalized Multi-Protocol Label Switching

1
GMPLSGeneralized Multi-Protocol Label Switching
2
? ?

• ??
• MPLS? MPLambdaS
• GMPLS? signaling protocol
• GMPLS? routing protocol
• IETF? GMPLS ??? ??
• ??
• ????

3
? ?

• Network? ?? ??? ????? ??
• ??? ?? - DWDM
• ?? ?? ??? MPLS
• DWDMMPLSGMPLS
• MPLS ?? ??
• ?? ???, QoS ????, TE? ???, ???? ?? IP ???, VPN
  ??? ?? ?
• GMPLS? ?? delayering
• GMPLS TDM, Lambda, port(fiber), switching
• GMPLS? ?? OSIRM? 1,2,3?? ? ???? ?? peering???
  1,2,3 ??? ??? ? ?? ???? ??

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MPLS? MPLambdaS(1)

• MPLS
• ???? ?? ?? ??? ??? ???? ??? ?? ?? ????? ?? ??
  ??? ????? ????? ??? Label? ??? ???? MPLS? ??
• MPLS ?? ??? ??? label? ???? 3??? ??? ?? 2????
  ??????? packet forwarding
• ?? ???? ???? Ingress router??? LSP ??? Egress
  router? ????, Egress router? ???? label ??
  Ingress router? ??.

5
MPLS? MPLambdaS(2)

• MPLS? LSP ????

LSP Label Switched Path
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MPLS? MPLambdaS(3)

• MPLambdaS
• MPLS? ????? Label ?? Lambda ??
• Lambda ???? ?? ??? ??
• ?? ??? ??? ??? ??
• ? ?? fiber? ??? ?? ?? ??? ?? ? ? ???? ???? ???
• ?? Low power, Low cost, ???? ??(????, ????,
  ???/????)? ??

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MPLS? MPLambdaS(4)

• MPLambdaS? LSP ????

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MPLS? MPLambdaS(5)

• ?? ??? ????

A?C, C?E ?? ?? ???? B?D ?? ?? ??
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GMPLS? signaling protocol(1)

• GMPLS? ???? ??
• PSC ?? ? ?? ??? ???? ?? ??? ?? ??? ??
• TDM ????? ?? ????? ?? ??? ??
• LSC ??? ?? ??? ??
• FSC ?? ?? ????? ??? ???? ??? ??

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GMPLS? signaling protocol(2)

• GMPLS signaling protocol
• MPLS? ??? ???? ??? ?? ??
• ??? ???
• A signaling functional description
• Genealized Label Request
• Generalized Label
• Suggested Label
• Bi-directional LSP
• RSVP-TE Extension
• CR-LDP Extension

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GMPLS? signaling protocol(3)

• Generalized label request
• ??? LSP? ?? ??? ??? ??? ??
• LSP Enc.Type Packet, Ethernet, SDH, SONET,
  Lambda, Fiber ?
• LSP ???? ??(G-PID) LSP? ??? payload ???

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GMPLS? signaling protocol(4)

• Generalized Label
• Bundle ?? fiber, fiber ?? waveband, waveband ??
  ????, ???? timeslot? ? ??? ???? label ??.
• Link ID ? Label? ??
• Link ID ?? ??? bundling ??? ??.
• Label format Label? ???? ??? ??? ???? ??

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GMPLS? signaling protocol(5)

• Suggested Label
• Upstream node? Downstream node?? ??? ???? label?
  ????? ??.
• Downstream node ? ?? label? ?? ?? ????? ??? ? ?
  ?? ???? label ?? ?? ??
• Downstream node ? ?? label? ??? ? upstream node?
  downstream node? ??? ? label? ??
• Bi-directional LSP
• ? ?????? ?? (initiator, terminator? ??)
• ? ?? ???? ??? LSP? ??? ???? ??, ?? ?? ?? ??, ??
  ??? ??? ??.
• LSP ??? ???? signaling ???? upstream node? label?
  ???? ??? LSP ??

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GMPLS? signaling protocol(6)

• RSVP-TE/CR-LDP Extension
• Generalized LSP Setup

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GMPLS? signaling protocol(6)

• RSVP-TE/CR-LDP Extension
• ??? switching type ??? ?? ??? label request,
  generalized label, suggested label, label set ??
  RSVP-TE ? CR-LDP??? ??? Object/TLV(Type, Length,
  Value)? ???? ?? ???? ??.

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GMPLS? routing protocol(1)

• ?? IETF? ??? draft - OSPF,ISIS,BGP
• LSP(Label Switched Path) Hierarchy
• Forwarding Adjacency
• Link Bundling
• Unnumbered Link

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GMPLS? routing protocol(2)

• LSP(Label Switched Path) Hierarchy
• PSC ?? ? ?? ??? ???? ?? ??? ?? ??? ??
• TDM ????? ?? ????? ?? ??? ??
• LSC ??? ?? ??? ??
• FSC ?? ?? ????? ??? ???? ??? ??

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GMPLS? routing protocol(3)

• Forwarding Adjacency
• GMPLS ??? LSP? ISIS/OSPF? TE ??? ??? ? ??. ???
  ??? Forwarding Adjacency(FA)? ???? ??, FA-LSP??
  ??.
• ISIS/OSPF FA? ?? ??? ??? ??? ?? ??? ???? ? LSR?
  FA? ??? ??? ?? TE?? ?? ??? ??? ??. ?? ??? LSR ?
  ?? ??? FA? ????, ???? ??? ???? ???? ??? MPLS?
  ???? ??.

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GMPLS? routing protocol(4)

• Link Bundling
• ?? ? ?? ??? ?? ?? ??? ?? ?? ?? ?, ?? ?? ??? ???
  ???? ??.
• ????? ?? ??? ?? ?? DB? ??? ????? ??? ??? ??? ???
  bundling?? ?? ?? ???? ??? ??.

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GMPLS? routing protocol(5)

• Unnumbered Link
• MPLS ??? ?? ??? IP ??? ??
• GMPLS??? ??? ID? ????? ID? ???? Unnumbered Link?
  ??
• RSVP-TE? CR-LDP??? ??? ID? ????? ID object/TLV?
  ???? ???? ??
• LSR?? router ID? interface ID? ??? 32bit
  identifier? ??
• ? ?? Link? ??? LSR ???? ??

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IETF? GMPLS ??? ??

• ??? ??
• Sub-IP area? mpls WG? ccamp WG ??
• ?? 4?? ??? ? ??? joint last call ??
• GMPLS-Signaling Functional Descriptioin
• GMPLS ??? ?? MPLS signal ??? ?? ??
• GMPLS signaling RSVP-TE Extensions
• MPLS?? ??? RSVP-TE? GMPLS? ?? RSVP-TE? ??? ?????
  ?? ??
• GMPLS signaling CR-LDP Extensions
• GMPLS Extensions for SONET and SDH Control
• GMPLS signaling ??? SONET/SDH ??? ???? ?? ??? ??
  ??.

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? ?

• GMPLS ?? ???? ?? MPLS? ????? ?? 1,2,3? ??? ????
  ?
• GMPLS? ?? ???? ???
• GMPLS ???? ?? ??? ??? ??? ???? ??? ??, ?? ????
  ??? ????? ?? ??? ??

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????

• 1 Yangguang Xu, Patrice N. Lamy, Eve L. Varma,
  and Ramesh Nagarajan, "Generalized MPLS-Based
  Distributed Control Architecture for
  Automatically Switched Transport Networks," Bell
  Labs Technical Journal, pp. 33-49, Jan.-Jun.,
  2001.
• 2 Ayan Banerjee, "Generalized Multiprotocol
  Label Switching An Overview of Signaling
  Enhancements and Recovery Techniques," IEEE
  Communications Magazine, pp. 144-151, July, 2001.
• 3 Ayan Banerjee, "Generalized Multiprotocol
  Label Switching An Overview of Routing and
  Management Enhancements," IEEE Communications
  Magazine, pp. 144-150, Jan., 2001.
• 4 Guangzhi Li, "Experiments in Fast Restoration
  using GMPLS in Optical / Electronic Mesh
  Networks," Optical Fiber Communication Conference
  and Exhibit, pp. PD34_1 -PD34_3, 2001.
• 5 ???, ????? ?? Generalized MPLS ????, KRNET
  2001.
• 6 ???, GMPLS? ?? ???, ????? ?????????.
• 7 ???, Multiprotocol Label Switching
  Architecture," ???????.
• 8 ???, Multiprotocol Lambda Switching," ?????.
• 9 ???, GMPLS(Generalized MPLS)," TTA ?? 76?,
  pp. 82-91.
• 10 ???, Generalized Multiprotocol Label
  Switching".
• 11 draft-ietf-mpls-generalized-rsvp-te-04.txt
• 12 draft-ietf-mpls-generalized-cr-ldp-04.txt
• 13 draft-ietf-isis-gmpls-extensions-04.txt
• 14 draft-ashwood-generalized-mpls-signaling-00.t
  xt
• 15 http//www.altera.com/solutions/networking/ne
  t-mpls.html
• 16 http//www.tta.or.kr/
• 17 http//www.mplsrc.com/
• 18 http//www.gmpls.org/
• 19 http//www.krnet.or.kr/