1 / 9

UNI Extensions for Diversity and Latency Support

UNI Extensions for Diversity and Latency Support. draft-fedyk-ccamp-uni-extensions-04. IETF 89 – CCAMP WG. Don Fedyk Don.Fedyk@hp.com Dieter Beller Dieter.Beller@alcatel-lucent.com Lieven Levrau Lieven.Levrau@alcatel-lucent.com Daniele Ceccerelli Daniele.Ceccarelli@ericsson.com

jered
Télécharger la présentation

UNI Extensions for Diversity and Latency Support

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. UNI Extensions for Diversityand Latency Support • draft-fedyk-ccamp-uni-extensions-04 IETF 89 – CCAMP WG Don FedykDon.Fedyk@hp.com Dieter Beller Dieter.Beller@alcatel-lucent.com LievenLevrauLieven.Levrau@alcatel-lucent.com Daniele CeccerelliDaniele.Ceccarelli@ericsson.com Fatai ZhangZhangFatai@huawei.com Yuji TochioTochio@jp.fujitsu.com Xihua Fu Fu.Xihua@zte.com.cn IETF 89 London

  2. Agenda • Updates from 03 to 04 version • New section dealing with diversity aspects in a multi-domain environment where some domains are utilizing a PCE. • Operational procedure details • Next steps IETF 89 London

  3. Updates from 02 to 03 version • Diversity part for dual-homed CEs: • New section on compatibility with PCE added: • Compatibility of domains using distributed routing and path computation with domains using the centralized PCE approach • Solution for PCE domains is based on draft-zhang-ccamp-route-exclusion-pathkey-01.txt • Latency part: • No updates • Draft fairly stable IETF 89 London

  4. Operational procedure details • Combined solution where signaling and constraint-based path computation is involved: • Signaling: • Carrying diversity constraints for the LSP being established(to ensure that the LSP is diverse w.r.t. another LSP) • Collecting diversity information for the LSP that can be passed onfor establishing a diverse routed LSP (SRLG Lists or “cookies”) • Path computation: • Done locally at the ingress node of a domain • Done by a centralized PCE (ingress node sends a PCEP requestto the PCE) • Diversity constraints are provided explicitly (list of SRLG IDs) or indirectly in form of a key (PAS or path key in case of PCE) • Constraints are taken into account when a path is calculated from ingress to egress of the domain IETF 88 CCAMP WG @ Vancouver

  5. Single domain diversity use caseDistributed routing and path comp. LSP1 SRLG_IDs(LSP1) PC PE1 P P PE SRLG_IDs(LSP2) CE CE LSP2 PC PE2 P P PE SRLG_IDs(LSP1) Exchange of SRLG ID list for disjoint LSPs via source CE node IETF 89 London

  6. Single domain diversity use caseDomain with a PCE PCE LSP1 Pathkey(LSP1) Pathkey(LSP1) PE1 P P PE Pathkey(LSP2) CE CE LSP2 Pathkey(LSP2) PE2 P P PE Pathkey(LSP1) Exchange of Pathkey for disjoint LSPs via source CE node IETF 89 London

  7. Mixed multi-domain diversity use caseDiversity information scoped to domains Div_Info(LSP1) = [domain_SO(DA), SRLG_IDs(DA)],[domain_SO(DB), Pathkey_SO(DB)],[domain_SO(DD), PAS_SO(DB)] Domain C sub-object Domain D sub-object Domain B Domain A sub-object PCE PE Domain D PE Domain A PE Div_info(LSP1) PE PE PE CE CE PE PE Domain C PCE PE PE PE PE Div_Info(LSP2) Domain C sub-object IETF 89 London

  8. Next Steps • Solicit feedback/comments from the group • Work with authors of the related diversity drafts trying to come up with a single solution applicableto all use cases/scenarios. • WG adoption not intended right now due to the previous point. • Ensure that the overlay framework draft includes the use cases for which this drafts describes solutions. IETF 89 London

  9. Thank You! IETF 89 London

More Related