The MPLS WG Archive

["Thomas D. Nadeau" <tnadeau@cisco.com>]

At 12:24 PM 2/27/2001 -0700, Jim Boyle wrote:

>pretend you are a service provider, a customer calls in and says he's
>seeing errors on his service (in particular, bip violalations in POH).
>
>He is directly connected to your network via port A.
>On the far end, he connects to a clec, which hands it off to you at port
>Z.  He connects to a CLEC adm on port Z'.  His path terminating equipment
>(maybe a router) is port Ac, and Zc, such that the service looks like:
>
>Ac-A-[IP]-Z-CLEC-Z'-Zc
>
>Looking at lines Ac-A and Z-CLEC shows clean lines.
>
>How does the operator determine if his IP network is to blame, or the
>CLECs network is to blame?
>
>i'd recomend a few things:
>
>o) Andy's draft should have some sort of way to determine if there are bit
>errors hapenning across the IP network that affect the service
>payload.  This would provide the same sort of delineation of where a
>problem is occuring by looking at LOHs in more traditional transport
>network.
>
>o) your mib should include analogues to the SONET mib, such as bip-8
>violations, errored seconds, etc... (working off memory here).
>
>o) addition of a "reason for last down" might be nice.
>
>This way, when you, as the service provider, replies that "it's not our
>problem, must be the clec", they can say at least go look at it later to
>see if they were telling the truth.
>
>As usual, excellent attention paid to the configuration aspects.

         Jim, these are all good recommendations. I will speak with
Andy about these issues and will make the additions you recommend
to the MIB after going over them with the other co-authors.

         Thanks for the input.

         --Tom




>regards,
>
>Jim
>
>
>On Fri, 23 Feb 2001, Thomas D. Nadeau wrote:
>
> >
> >       Hi,
> >
> >       FYI a new MIB for managing SONET/SDH Circuit Emulation
> > Service Over MPLS has been posted. It should be available
> > shortly via the IETF's web site. In the meantime, it is available
> > at the following web/ftp link. As usual, comments are welcome.
> >
> > 
> ftp://anonymous@ftp-eng.cisco.com/ftp/tnadeau/draft-danenberg-sonet-ces-mpls-mib-00.txt
> >
> >       --Tom
> >