ccamp-10
TRANSCRIPT
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62nd IETF Minneapolis February 2005
MRN document set
Requirements
Analysis
GMPLS ProtocolExtensions
draft-shiomoto-ccamp-gmpls-mrn-reqs
draft-papadimitriou-ccamp-gmpls-mrn-extensions
draft-leroux-ccamp-gmpls-mrn-eval
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Requirements for GMPLS-based multi-
region networks (MRN)
draft-shiomoto-ccamp-gmpls-mrn-reqs-01.txt Kohei Shiomoto: [email protected] Dimitri Papadimitriou: [email protected]
Jean-Louis Le Roux: [email protected] Vigoureux: [email protected]
Deborah Brungard: [email protected] Eiji Oki: [email protected]
Ichiro Inoue: [email protected]
Emmanuel Dotaro: [email protected]
mailto:[email protected]:[email protected]:[email protected]:[email protected] -
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Major changes (00->01) Some clarifications
VNT (see next slides) Node categories (see next slides) Vertical vs Horizontal integration Multi-region signaling
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62nd IETF Minneapolis February 2005
VNT: Virtual Network Topology
VNT 1 VNT 2
TE based on dynamic reconfiguration of VNT Optical-layer provides VNT for packet-layer VNT is re-configured by LSP setup/teardown.
Optical-LSP is routed over the fiber topology.
Traffic demand
Current VNT
New VNT
r r r
r r r
r r r
nnnn
nn
,2,1,
,22,21,2,12,11,1
PPP
PPP
PPP
nnnn
n
n
,2,1,
,22,21,2
,12,11,1
PPP
PPP
PPP
nnnn
n
n
,2,1,
,22,21,2
,12,11,1
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62nd IETF Minneapolis February 2005
Node categories Multiple switching capable nodes: simplex versus hybrid A simplex node
single switching capability per interface , but can comprise of interfaceswith distinct switching capabilities
advertises several TE Links each with a single SC value as part of itsISCD sub-TLVs.
A hybrid node multiple switching capabilities per interface , and interfaces of the same
hybrid node may have different multiple switching capabilities advertises at least one TE Link containing multiple ISCDs with different
SC values (at least one per supported SC value per interface).
TDM
PSC
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Evaluation of GMPLS Protocolsagainst Multi Region Networks
draft-leroux-ccamp-gmpls-mrn-eval-00.txt
Jean-Louis Le Roux (France Telecom)Deborah Brungard (AT&T)Eiji Oki (NTT)Dimitri Papadimitriou (Alcatel)Kohei Shiomoto (NTT)Martin Vigoureux (Alcatel)
IETF 62, Minneapolis 03/08/2005
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Evaluation Result
MRN Requirements Implies GMPLS protocols ?
Required GMPLS extensions
Control of Forwarding Adjacencies (FA)setup/release
YES No
Virtual FAs YES Signaling of soft-FA
Traffic Disruption minimization during FArelease
YES Need for Graceful TE-linkdeletion
Path computation stability NO NoSupport for FA LSP attributesinheritance
YES No
Support for Triggered signaling YES No
Support for Multi-region signalingYES Inclusion/exclusion of ISCin G-RSVP
FA connectivity verification NO No
Advertisement of Internal AdaptationCapabilities
YES Routing extensionNew sub-TLV
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Generalized Multi-Protocol Label Switching (GMPLS)Protocol Extensions for Multi-Region Networks (MRN)
draft-papadimitriou-ccamp-gmpls-mrn-extensions-01.txt
Jean-Louis Le Roux (France Telecom) Deborah Brungard (AT&T)
Kohei Shiomoto (NTT)Dimitri Papadimitriou (Alcatel)
Martin Vigoureux (Alcatel)
IETF 62, Minneapolis 03/08/2005
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From last version (v00.txt)
Editorial revision
Coverageadvertisement of interface adaptation capability (internal
termination capability)
multi-region signaling
Multi-region signalingExclude Route (XRO) for excluding set of one or more SC from a
link supporting multiple SCs
Explicit Route (ERO) for including a specific SC from a linksupporting multiple SCs
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Next revision
Cover signaling of virtual Forwarding Adjacencies
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