Re: Request for comments: draft-jain-nvo3-overlay-oam-01.txt

["Henderickx, Wim (Wim)" <[e-mail]>]

We can do this + we leveraged as much as possible the LSP ping solutions with minor extensions

From: Tom Nadeau <[e-mail]<mailto:[e-mail]>>
Date: Thursday 27 February 2014 17:05
To: Wim Henderickx <[e-mail]<mailto:[e-mail]>>
Cc: "[e-mail]<mailto:[e-mail]>" <[e-mail]<mailto:[e-mail]>>, Pradeep Jain <[e-mail]<mailto:[e-mail]>>, Vinay Bannai <[e-mail]<mailto:[e-mail]>>, Ravi Shekhar <[e-mail]<mailto:[e-mail]>>
Subject: Re: Request for comments: draft-jain-nvo3-overlay-oam-01.txt


The question is, and perhaps the draft could explain this, is why existing tools a) are insufficient and b) cannot be modified.
Operationally speaking, b is preferred if you ask me as learning a new tool/model for diagnosis and trouble-shooting is expensive and painful.
For example, if we took the tact of reinventing say IP ping for every underlying transport, then we'd have 50 tools by now.

--Tom



On Feb 27, 2014:11:02 AM, at 11:02 AM, Henderickx, Wim (Wim) <[e-mail]<mailto:[e-mail]>> wrote:

Because we also need to trace L2 endpoints besides IP endpoint.

From: Shahram Davari <[e-mail]<mailto:[e-mail]>>
Date: Thursday 27 February 2014 16:58
To: Kanwar Singh <[e-mail]<mailto:[e-mail]>>
Cc: "[e-mail]<mailto:[e-mail]>" <[e-mail]<mailto:[e-mail]>>, Pradeep Jain <[e-mail]<mailto:[e-mail]>>, Vinay Bannai <[e-mail]<mailto:[e-mail]>>, Ravi Shekhar <[e-mail]<mailto:[e-mail]>>
Subject: Re: Request for comments: draft-jain-nvo3-overlay-oam-01.txt

Hi

Why don't you use existing IP based OAM messages such as BFD, OWAMP, TWAMP, etc.

Regards,
Shahram


On Feb 27, 2014, at 7:46 AM, "Kanwar Singh" <[e-mail]<mailto:[e-mail]>> wrote:

Dear All,

We have submitted the below draft that proposes Generic OAM and Datapath Failure Detection Mechanism(s) for Overlay Networks.

We would like to solicit inputs from the members of L2VPN WG.

Please review the same and update us with your inputs/feedback.


Warm Regards

- Kanwar



A new version of I-D, draft-jain-nvo3-overlay-oam-01.txt has been successfully submitted by Kanwar Singh and posted to the

IETF repository.

Name:           draft-jain-nvo3-overlay-oam
Revision:       01
Title:          Generic Overlay OAM and Datapath Failure Detection
Document date:  2014-02-12
Group:          Individual Submission
Pages:          44
URL:            http://www.ietf.org/internet-drafts/draft-jain-nvo3-overlay-oam-01.txt
Status:         https://datatracker.ietf.org/doc/draft-jain-nvo3-overlay-oam/
Htmlized:      http://tools.ietf.org/html/draft-jain-nvo3-overlay-oam-01
Diff:              http://www.ietf.org/rfcdiff?url2=draft-jain-nvo3-overlay-oam-01

Abstract:
   This proposal describes a mechanism that can be used to detect Data
   Path Failures of various overlay technologies as VXLAN, NVGRE,
   MPLSoGRE and MPLSoUDP and verifying/sanity of their Control and Data
   Plane for given Overlay Segment.  This document defines the following
   for each of the above Overlay Technologies:

   o  Encapsulation of OAM Packet, such that it has same Outer and
      Overlay Header as any End-System's data going over the same
      Overlay Segment.

   o  The mechanism to trace the Underlay that is exercised by any
      Overlay Segment.

   o  Procedure to verify presence of any given Tenant VM or End-System
      within a given Overlay Segment at Overlay End-Point.

   Even though the present proposal addresses Overlay OAM for VXLAN,
   NVGRE, MPLSoGRE and MPLSoUDP, but the procedures described are
   generic enough to accommodate OAM for any other Overlay Technology.