Hi Loa, et al.,
I think that you're referring to Connectivity Verification in MPLS-TP (RFC
6428). It would only detect mis-connection but would not count leaked in frames.
Such problem may be more apparent in Segment Routing (SPRING WG). Perhaps CV
should be a requirement in SR OAM.
Regards,
Greg
-----Original Message-----
From: mpls [mailto:[email protected]] On Behalf Of Loa Andersson
Sent: Thursday, January 09, 2014 8:17 AM
To: [email protected]; [email protected]
Cc: [email protected]; [email protected]; [email protected]; [email protected];
[email protected]; [email protected]; [email protected]
Subject: [mpls] misdelivered mpls packets - Was: Re: draft-ietf-mpls-in-udp was
RE: gre-in-udp draft
Changed the subject line !
On 2014-01-09 20:36, Mark Tinka wrote:
> On Thursday, January 09, 2014 02:08:43 PM Stewart Bryant
> wrote:
>
>> Either or both.
>
> I can only speak to native MPLS, as I've never run tunneled MPLS.
>
>> I am interested in how often in practice MPLS packets get
>> misdelivered due to label corruption.
>
> Well, first of all, routers would need to report corrupted MPLS frames
> so operators can glean this data. This isn't something I've come
> across, but it would be good to find some kind of way to count this
> across interfaces, if the routers can detect and report them.
This would be possible to do with MPLS-TP OAM, wouldn't it?
/Loa
>
> The known issue about mis-delivery of MPLS frames is poorly- sized MTU
> interfaces. I have no empirical data as to how this can corrupt
> successive MPLS frames that may fit into the transit MTU. But in this
> case, as with any Layer 2 traffic, not enough MTU = dropped frame.
>
> Mark.
>
--
Loa Andersson email: [email protected]
Senior MPLS Expert [email protected]
Huawei Technologies (consultant) phone: +46 739 81 21 64
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