Re: [mpls-tp] [mpls] [PWE3] [AHMPLS-TP] Re: pollondraft-he-mpls-tp-csf-03.txt

[John E Drake <[e-mail]>]

I think you are missing the point.  Viz, any L2 technology will go through a PW and PWs already have a CSF equivalent.  The other TP clients are IP and MPLS, and they have their own detection mechanisms. 

Sent from my iPhone


> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]] On Behalf Of
> [e-mail]
> Sent: Thursday, December 02, 2010 6:40 AM
> To: [e-mail]; [e-mail];
> [e-mail]
> Cc: [e-mail]; [e-mail]; [e-mail];
> [e-mail]; [e-mail]
> Subject: Re: [mpls] [PWE3] [AHMPLS-TP] Re:[mpls-tp] pollondraft-he-
> mpls-tp-csf-03.txt
> 
> 
> Agree with Lieven.
> 
> We need to avoid making predictions about the capability & complexity
> (& even existence) of a certain client layer technology (most of all
> considering terminal nodes connected by attachment circuits), but still
> provide effective fault notifications in packet transport applications.
> Herefore, IMHO, CSF is helpful and required.
> 
> Of course, we also strongly need to avoid confusing control plane and
> data plane tasks (e.g. relying on LDP session timeouts for fault
> detection).
> 
> Best regards
> Manuel
> 
> > -----Original Message-----
> > From: [e-mail] [mailto:[e-mail]] On Behalf
> Of
> > LEVRAU, LIEVEN (LIEVEN)
> > Sent: Thursday, December 02, 2010 2:17 PM
> > To: Rajiv Asati (rajiva); Yuanlong Jiang
> > Cc: [e-mail]; Sprecher,Nurit (NSN - IL/Hod HaSharon); MPLS-TP ad
> hoc
> > team; [e-mail]; [e-mail]
> > Subject: Re: [mpls] [PWE3] [AHMPLS-TP] Re:[mpls-tp] pollondraft-he-
> mpls-
> > tp-csf-03.txt
> >
> > provocative statement alert- We should as we are talking about MPLS-
> TP and
> > not about IP network layer.
> >
> > ./
> > Lieven
> > -----Original Message-----
> > From: [e-mail] [mailto:[e-mail]] On Behalf
> Of
> > Rajiv Asati (rajiva)
> > Sent: 02 December 2010 14:14
> > To: Yuanlong Jiang
> > Cc: Sprecher, Nurit (NSN - IL/Hod HaSharon); MPLS-TP ad hoc team;
> > [e-mail]; [e-mail]; [e-mail]
> > Subject: Re: [mpls] [PWE3] [AHMPLS-TP] Re: [mpls-tp] pollondraft-he-
> mpls-
> > tp-csf-03.txt
> >
> > Are we ignoring the existence of BFD altogether?
> >
> > Cheers,
> > Rajiv
> >
> > Sent from my Phone
> >
> > On Dec 1, 2010, at 8:19 PM, Yuanlong Jiang <[e-mail]>
> wrote:
> >
> > > John,
> > >
> > > Typically, IP will only detect a failure in a time scale of
> minutes.
> > > That is one reason why MPLS-TP OAM and Protection & Switching is
> needed.
> > > I am not sure which mechanism in MPLS provides the CSF-like
> capability,
> > could you give more hints?
> > >
> > > Thanks
> > > Yuanlong
> > >
> > > ----- Original Message ----- From: "John E Drake"
> <[e-mail]>
> > > To: "Sprecher, Nurit (NSN - IL/Hod HaSharon)"
> <[e-mail]>om>;
> > "Yuanlong Jiang" <[e-mail]>om>; "Loa Andersson" <[e-mail]>nu>;
> > <[e-mail]>rg>; <[e-mail]>rg>; <[e-mail]>rg>; "MPLS-TP ad hoc
> > team" <[e-mail]>
> > > Sent: Wednesday, December 01, 2010 9:29 PM
> > > Subject: RE: [PWE3] [AHMPLS-TP] Re: [mpls-tp] poll ondraft-he-mpls-
> tp-
> > csf-03.txt
> > >
> > >
> > >> Nurit,
> > >>
> > >> As I understand the original requirement from Malcolm Betts, this
> > capability is required for those cases in which a client is unable to
> > detect the failure of its peer.  In MPLS-TP, we have three clients,
> PW, IP,
> > and MPLS, and I am quite sure that IP and MPLS clients can take care
> of
> > themselves wrt detecting peer failure.
> > >>
> > >> Thanks,
> > >>
> > >> John
> > >>
> > >> Sent from my iPhone
> > >>
> > >>> -----Original Message-----
> > >>> From: Sprecher, Nurit (NSN - IL/Hod HaSharon)
> > >>> [mailto:[e-mail]]
> > >>> Sent: Wednesday, December 01, 2010 4:47 AM
> > >>> To: John E Drake; Yuanlong Jiang; Loa Andersson; [e-mail];
> mpls-
> > >>> [e-mail]; [e-mail]; MPLS-TP ad hoc team
> > >>> Subject: RE: [PWE3] [AHMPLS-TP] Re: [mpls-tp] poll ondraft-he-
> mpls-tp-
> > >>> csf-03.txt
> > >>>
> > >>> But what about other client services... e.g. adapted by service-
> LSP
> > and
> > >>> not by PWE3?
> > >>>
> > >>> -----Original Message-----
> > >>> From: [e-mail] [mailto:[e-mail]] On
> Behalf
> > Of
> > >>> ext John E Drake
> > >>> Sent: Wednesday, December 01, 2010 2:35 PM
> > >>> To: Yuanlong Jiang; Loa Andersson; [e-mail]; mpls-
> [e-mail];
> > >>> [e-mail]; MPLS-TP ad hoc team
> > >>> Subject: Re: [PWE3] [AHMPLS-TP] Re: [mpls-tp] poll
> > >>> ondraft-he-mpls-tp-csf-03.txt
> > >>>
> > >>> I am not convinced.  It seems like it belongs in the Pseudo Wire
> > >>> application, which already has this capability.
> > >>>
> > >>> Sent from my iPhone
> > >>>
> > >>>
> > >>> > -----Original Message-----
> > >>> > From: Yuanlong Jiang [mailto:[e-mail]]
> > >>> > Sent: Wednesday, December 01, 2010 1:07 AM
> > >>> > To: Loa Andersson; [e-mail]; [e-mail];
> [e-mail];
> > >>> > MPLS-TP ad hoc team
> > >>> > Subject: [AHMPLS-TP] Re: [mpls-tp] poll on draft-he-mpls-tp-
> csf-
> > >>> 03.txt
> > >>> >
> > >>> > Support.
> > >>> >
> > >>> > I believe this mechanism is needed in MPLS-TP.
> > >>> >
> > >>> > Thanks
> > >>> > Yuanlong
> > >>> >
> > >>> > ----- Original Message -----
> > >>> > From: "Loa Andersson" <[e-mail]>
> > >>> > To: <[e-mail]>rg>; <[e-mail]>rg>; <[e-mail]>rg>;
> "MPLS-TP
> > ad
> > >>> > hoc
> > >>> > team" <[e-mail]>
> > >>> > Sent: Thursday, November 18, 2010 7:56 PM
> > >>> > Subject: [mpls-tp] poll on draft-he-mpls-tp-csf-03.txt
> > >>> >
> > >>> >
> > >>> > > all,
> > >>> > >
> > >>> > > this is to start a two week poll on making
> > >>> > >
> > >>> > > http://www.ietf.org/internet-drafts/draft-he-mpls-tp-csf-
> 03.txt
> > >>> > >
> > >>> > > a mpls working group document.
> > >>> > >
> > >>> > > Please send comments support/not support to the mpls-tp
> maililng
> > >>> > list.
> > >>> > >
> > >>> > > The poll ends Thursday Dec 2, 2010.
> > >>> > >
> > >>> > > /Loa
> > >>> > > --
> > >>> > >
> > >>> > >
> > >>> > > Loa Andersson                         email:
> > >>> > [e-mail]
> > >>> > > Sr Strategy and Standards Manager            [e-mail]
> > >>> > > Ericsson Inc                          phone: [phone]
> > >>> > >                                              [phone]
> > >>> > > _______________________________________________
> > >>> > > mpls-tp mailing list
> > >>> > > [e-mail]
> > >>> > > https://www.ietf.org/mailman/listinfo/mpls-tp
> > >>>
> > >>> _______________________________________________
> > >>> pwe3 mailing list
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> > >>> https://www.ietf.org/mailman/listinfo/pwe3
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