Re: [mpls] 2nd working group last call on draft-ietf-mpls-tp-mip-mep-map

[Pablo Frank <[e-mail]>]

I'm still a little wary of the wording on pg. 9, 4th bullet.  Currently,
the draft suggests that packet inspection needs to be minimized.  My
concern with the original solution proposal was that it required a new
line-rate *lookup*.  There was a secondary concern around parsing TLVs
which this point *does* appear to address, but minimizing 'inspection' does
not seem to preclude new lookups.  One of the nice things about MPLS OAM as
it's defined today is that relatively easy to get off-the-shelf forwarding
hardware to trap / redirect OAM frames to a separate OAM block that could
perform the OAM validation and lookups.  This is because encountering a
GACh or a TTL expiry as part of regular MPLS handling unambiguously
terminates the frame (and note that it doesn't require an OAM-specific
lookup in the main-line forwarding hardware).  I'd like this draft to set
avoiding new OAM-specific lookups as a design objective, or you risk
precluding a whole class of (cheap, high volume) hardware from being able
to do this function.

regards,
Pablo


On Wed, Mar 6, 2013 at 2:30 PM, Shahram Davari <[e-mail]> wrote:

> My Comments are addressed and I support this draft to be published as
> Informational  RFC.
>
> Thx
> Shahram
>
> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]] On Behalf Of
> Loa Andersson
> Sent: Tuesday, February 26, 2013 3:02 AM
> To: [e-mail]
> Cc: <[e-mail]>; [e-mail];
> [e-mail]
> Subject: [mpls] 2nd working group last call on
> draft-ietf-mpls-tp-mip-mep-map
>
> Working Group,
>
> draft-ietf-mpls-tp-mip-mep-map-05.txt has been updated after a
> previous last call, due to the nature a and extent of the updates
> we have chosen to start a 2nd wg last call.
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-mip-mep-map
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-mpls-tp-mip-mep-map-05
>
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-tp-mip-mep-map-05
>
> Please send your comments, including approval of the documents and
> the updates to the mpls working group list ([e-mail])
>
> This working group last call ends March 13, 2013.
>
> /Loa
> for the MPLS working group co-chairs
> --
>
>
> Loa Andersson                        email: [e-mail]
> Senior MPLS Expert                          [e-mail]
> Huawei Technologies (consult)        phone: [phone]
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