Re: [Lime-oam-model] Design Team report

Qin Wu <> Sat, 21 March 2015 18:40 UTC

Return-Path: <>
Received: from localhost ( []) by (Postfix) with ESMTP id 32C6A1ACD37 for <>; Sat, 21 Mar 2015 11:40:47 -0700 (PDT)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.422
X-Spam-Status: No, score=-1.422 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CN_BODY_35=0.339, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id ESFJKuL8PI9i for <>; Sat, 21 Mar 2015 11:40:45 -0700 (PDT)
Received: from ( []) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by (Postfix) with ESMTPS id 0B6A21ACD35 for <>; Sat, 21 Mar 2015 11:40:44 -0700 (PDT)
Received: from (EHLO ([]) by (MOS 4.3.7-GA FastPath queued) with ESMTP id BTZ16061; Sat, 21 Mar 2015 18:40:43 +0000 (GMT)
Received: from ( by ( with Microsoft SMTP Server (TLS) id; Sat, 21 Mar 2015 18:40:42 +0000
Received: from ([]) by ([]) with mapi id 14.03.0158.001; Sun, 22 Mar 2015 02:40:39 +0800
From: Qin Wu <>
To: Gregory Mirsky <>, "" <>, "'Tom Taylor'" <>, "'Ronald Bonica'" <>, "" <>
Thread-Topic: [Lime-oam-model] Design Team report
Thread-Index: AQHQYoJk3N7qFUQxyU+EYPD/wRsQwp0kpn3ggAAisICAAV47gIAAIt+AgAAzeACAADg2gIAAj8+Q
Date: Sat, 21 Mar 2015 18:40:38 +0000
Message-ID: <>
References: <> <> <> <> <> <> <> <> <> <> <> <> <> <550C13BD.60209@!> <015f01d063b9$46c0bb80$d4423280$> <550D56C9.1030!> <019a01d063e4$7443fb50$5ccbf1f0$> <>
In-Reply-To: <>
Accept-Language: zh-CN, en-US
Content-Language: zh-CN
x-originating-ip: []
Content-Type: text/plain; charset="gb2312"
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-CFilter-Loop: Reflected
Archived-At: <>
Cc: "'Deepak Kumar \(dekumar\)'" <>
Subject: Re: [Lime-oam-model] Design Team report
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: LIME WG OAM Model Design Team <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Sat, 21 Mar 2015 18:40:47 -0000

I think we can support both proactive mode and on demand mode by generalizing ping/traceroute rpc.

发件人: Gregory Mirsky [] 
发送时间: 2015年3月22日 1:58
收件人:; 'Tom Taylor'; Qin Wu; 'Ronald Bonica';
抄送: 'Deepak Kumar (dekumar)'
主题: RE: [Lime-oam-model] Design Team report

Hi Adrian, et. al,
the only identified common OAM function identified so far is ping/traceroute. But this is, primarily, on-demand functions and do not require configuration but are, what is referred, long-running command, which is sort of challenge for Netconf  but not specific to LIME discussion. Configuration of OAM, as I think of it, is primarily for proactive OAM tools, e.g. BFD Async, TWAMP in IP. And that where I find RFC 7276 and attempt to extend TRIL OAM to IP and LDP-based IP/MPLS OAMs come short.


-----Original Message-----
From: Adrian Farrel []
Sent: Saturday, March 21, 2015 7:37 AM
To: 'Tom Taylor'; 'Qin Wu'; Gregory Mirsky; 'Ronald Bonica';
Cc: 'Deepak Kumar (dekumar)'
Subject: RE: [Lime-oam-model] Design Team report

> Bottom line: I'm saying that the generic LIME model should be able to 
> trigger performance monitoring regardless of the layer under examination.

Well say "attempt to" because, if the layer doesn't support a particular OAM function, obviously it won't be triggered.
Similarly, if an implementation is missing that function.

But beyond that, yes, there is a set of generic OAM functions that need to be in the LIME model for config and enablement.
Since the model is generic and layer-independent, we would assume that the function set in the LIME model is a superset of the functions in any specific known layer.