Re: [mpls] working group last call on draft-ietf-mpls-tp-mip-mep-map

[Gregory Mirsky <[e-mail]>]

Hi Rolf,
I've been thinking about that requirement for some time and am not convinced that such requirement, support multiple MIP per LSP/PW on given LSR/PE, exists. AFAIK, in Ethernet OAM only support of single MIP per MD/MEG Level is required and support of multiple MIPs is optional. True, multiple MIPs of different MD/MEG Levels might be enabled on a node but in MPLS-TP we use SPME to model MD/MEG Levels and thus such MIPs are on different LSPs. As for p2mp case, I'm not sure how dat-plane loopback can be used on uni-directional construct.

        Regards,
                Greg

-----Original Message-----
From: Rolf Winter [mailto:[e-mail]]
Sent: Monday, December 03, 2012 12:15 PM
To: Gregory Mirsky; Loa Andersson; [e-mail]
Cc: [e-mail]; [e-mail]; [e-mail]
Subject: RE: working group last call on draft-ietf-mpls-tp-mip-mep-map

Hi Greg,

But that's the whole point of the document. There can be multiple in- and out-MIPs per LSP plus in the P2MP case there can be multiple out-MIPs per node. It cannot be based local configuration. There has to be information inside the OAM frame to address the respective MIP. Section 4 of the document has a (I believe) pretty good example of this.

Best,

Rolf

NEC Europe Limited | Registered Office: NEC House, 1 Victoria Road, London W3 6BL | Registered in England 2832014


> -----Original Message-----
> From: Gregory Mirsky [mailto:[e-mail]]
> Sent: Montag, 3. Dezember 2012 19:20
> To: Rolf Winter; Loa Andersson; [e-mail]
> Cc: [e-mail]; [e-mail]; draft-ietf-
> [e-mail]
> Subject: RE: working group last call on draft-ietf-mpls-tp-mip-mep-map
>
> Hi Rolf,
> Do you envision that multiple MIPs, both in- and out-, required to be
> supported on a given LSP/PW? I think that     only single MIP required
> per LSP/PW on an LSR/PE node. If that is the case, then there might be
> no apparent need to explicitly address in- and out- MIP as such
> distinction becomes part of local configuration.
>
>       Regards,
>               Greg
>
> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]] On Behalf
> Of Rolf Winter
> Sent: Monday, December 03, 2012 5:42 AM
> To: Loa Andersson; [e-mail]
> Cc: [e-mail]; [e-mail]; draft-ietf-
> [e-mail]
> Subject: Re: [mpls] working group last call on draft-ietf-mpls-tp-mip-
> mep-map
>
> Loa,
>
> These have been mentioned:
>
> 1. CV between a MEP and a MIP
> 2. traceroute over an MPLS-TP LSP and/or an MPLS-TP PW containing MIPs
> 3. data-plane loopback configuration at a MIP 4. diagnostic tests
>
> Best,
>
> Rolf
>
> NEC Europe Limited | Registered Office: NEC House, 1 Victoria Road,
> London W3 6BL | Registered in England 2832014
>
>
> > -----Original Message-----
> > From: Loa Andersson [mailto:[e-mail]]
> > Sent: Freitag, 30. November 2012 11:41
> > To: [e-mail]
> > Cc: [e-mail]; Martin Vigoureux;
> > draft-ietf-mpls-tp- [e-mail];
> > [e-mail]
> > Subject: Re: working group last call on draft-ietf-mpls-tp-mip-mep-
> map
> >
> > Authors,
> >
> > Can you plese give me an indication of which OAM functions the
> > separation of in and out MIPs are intended for?
> >
> > /Loa
> >
> >
> >
> > On 2012-11-14 16:16, Loa Andersson wrote:
> > >
> > > Working Group,
> > >
> > > This is to start a 2 week working group last call on
> > > draft-ietf-mpls-tp-mip-mep-map.
> > >
> > > Please send your comments to the mpls working group mailing list
> > > ([e-mail]).
> > >
> > > Please send both technical comments, and if you are happy with the
> > > document as is also indications of support.
> > >
> > > This working group last call will end on November 28.
> > >
> > > /Loa
> > > for the wg co-chairs
> > >
> > >
> >
> > --
> >
> >
> > Loa Andersson                         email:
> [e-mail]
> > Sr Strategy and Standards Manager            [e-mail]
> > Ericsson Inc                          phone: [phone]
> >                                               [phone]
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