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Ravi Singh (ravis@juniper.net) Ravi Singh (ravis@juniper.net)

Ravi Singh (ravis@juniper.net) - PowerPoint Presentation

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Ravi Singh (ravis@juniper.net) - PPT Presentation

Kireeti Kompella kireetijunipernet Senad Palislamovic senadpalislamovicalcatellucentcom IETF90 Toronto speaker Ravi Singh draftsinghl2vpnbgpvplscontrolflags01txt Updated processing of control flags for BGP VPLS ID: 344233

flags control bgp vpls control flags vpls bgp behavior mismatch processing updated pes bit draft bits ietf homed settings

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Slide1

Ravi Singh (ravis@juniper.net)Kireeti Kompella (kireeti@juniper.net)Senad Palislamovic (senad.palislamovic@alcatel-lucent.com)

IETF-90 (Toronto)speaker: Ravi Singh

draft-singh-l2vpn-bgp-vpls-control-flags-01.txt

Updated processing of control flags for BGP VPLSSlide2

BGP VPLS: Summary and an issue

Summary of BGP VPLS: efficiency of control messagingA PE’s NLRI specifies behavior expected from all other

PEs in that block (per VPLS):

VPLS label to useBehavior regarding acting on control flags, etcIssue: PE behavior when mismatching settings of control flags:Expectation of NLRI-originating PE cannot be met by every remote PE (w.r.t. acting on received control flags)No support for selectively asking only some PEs to act on control flagsWhat do the other PEs do? What does NLRI-originating-PE do?Ignore the mismatch?Not bring up the PW?

2

Updated processing of control flags for BGP VPLS

IETF-90Slide3

What is this draft about?

Supporting mixed-settings of control flags in a given VPLS:Making BGP VPLS work when PEs differ in their settings of the control flags

For every (per-VPLS) PE-pair, if one PE does not have the same value for C-bit, the PW between the pair still comes up. However, does not use CW.

Similarly for other bits in the control-flags

Works in a backward compatible fashionEnabling use of p2mp LSPs as transport when PEs in per-VPLS PE-set have mismatching control flagsUpdated processing of control flags for BGP VPLSIETF-903Slide4

Feedback on “-00” @ IETF-88 (Vancouver)

Address multi-homing cases

Get feedback

Updated processing of control flags for BGP VPLS

IETF-904Slide5

New in “-01”Additional co-author

Single-homed sites:

Behavior for S-bit mismatch handling changed w.r.t. “-00”

Use of p2mp transport clarified due to change (w.r.t. “-00”) of behavior for handling S-bit mismatch

Multi-homed site use-cases addressed:C-bit mismatch behavior specified for multi-homed sitesS-bit mismatch behavior specified for multi-homed sitesUse of p2mp transport for above mismatches specifiedUpdated processing of control flags for BGP VPLSIETF-905Slide6

Next stepsRequesting WG adoption:

Draft addresses valid deployment scenarios that operators face

Scope of draft

specifies behavior for mismatch of standardized

bits in the control-flags fieldWork-in-progress drafts that are defining new (not already standardized) bits in control-flags would address mismatch for those bits separately6Updated processing of control flags for BGP VPLSIETF-90