MRN document set

1
MRN document set
Requirements
draft-shiomoto-ccamp-gmpls-mrn-reqs
Analysis
draft-leroux-ccamp-gmpls-mrn-eval
GMPLS Protocol Extensions
draft-papadimitriou-ccamp-gmpls-mrn-extensions
2
Requirements for GMPLS-based multi-region
networks (MRN)
draft-shiomoto-ccamp-gmpls-mrn-reqs-01.txt

• Kohei Shiomoto shiomoto.kohei_at_lab.ntt.co.jp
• Dimitri Papadimitriou dimitri.papadimitriou_at_alcat
  el.be
• Jean-Louis Le Roux jeanlouis.leroux_at_francetelecom
  .com
• Martin Vigoureux martin.vigoureux_at_alcatel.fr
• Deborah Brungard dbrungard_at_att.com
• Eiji Oki oki.eiji_at_lab.ntt.co.jp
• Ichiro Inoue ichiro.inoue_at_lab.ntt.co.jp
• Emmanuel Dotaro emmanuel.dotaro_at_alcatel.fr

3
Major changes (00-gt01)

• Some clarifications
• VNT (see next slides)
• Node categories (see next slides)
• Vertical vs Horizontal integration
• Multi-region signaling

4
VNT Virtual Network Topology

• 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
New VNT
Current VNT
VNT 2
VNT 1
5
Node categories

• Multiple switching capable nodes simplex versus
  hybrid
• A simplex node
• single switching capability per interface, but
  can comprise of interfaces with distinct
  switching capabilities
• advertises several TE Links each with a single SC
  value as part of its ISCD 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
6
Evaluation of GMPLS Protocols
against Multi Region Networks
draft-leroux-ccamp-gmpls-mrn-eval-00.txt



Jean-Louis Le Roux (France Telecom)
Deborah Brungard (ATT)
Eiji Oki (NTT)
Dimitri Papadimitriou
(Alcatel) Kohei
Shiomoto (NTT)
Martin Vigoureux (Alcatel)

• IETF 62, Minneapolis 03/08/2005

7
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 FA release YES Need for Graceful TE-link deletion
Path computation stability NO No
Support for FA LSP attributes inheritance YES No
Support for Triggered signaling YES No
Support for Multi-region signaling YES Inclusion/exclusion of ISC in G-RSVP
FA connectivity verification NO No
Advertisement of Internal Adaptation Capabilities YES Routing extension New sub-TLV
8
Generalized Multi-Protocol Label Switching
(GMPLS) Protocol Extensions for Multi-Region
Networks (MRN) draft-papadimitriou-ccamp-gmpl
s-mrn-extensions-01.txt


Jean-Louis Le Roux (France
Telecom) Deborah
Brungard (ATT) Kohei Shiomoto (NTT) Dimitri
Papadimitriou (Alcatel)Martin Vigoureux
(Alcatel)

• IETF 62, Minneapolis 03/08/2005

9
From last version (v00.txt)

• Editorial revision
• Coverage
• advertisement of interface adaptation capability
  (internal termination capability)
• multi-region signaling
• Multi-region signaling
• Exclude 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 link supporting multiple SCs

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Next revision

• Cover signaling of virtual Forwarding Adjacencies

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Conclusion

• Requirement document
• Pretty stable
• ready for WG status
• Evaluation document pretty stable
• concentrate discussions on protocol applicability
• WG status ?
• Solution document to be progressed