[Entmib] Standby
"David T. Perkins" <dperkins@dsperkins.com> Fri, 13 February 2004 07:50 UTC
Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA26993 for <entmib-archive@lists.ietf.org>; Fri, 13 Feb 2004 02:50:27 -0500 (EST)
Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArY5J-0001dI-3L; Fri, 13 Feb 2004 02:50:01 -0500
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArY57-0001cI-4k for entmib@optimus.ietf.org; Fri, 13 Feb 2004 02:49:49 -0500
Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA26974 for <entmib@ietf.org>; Fri, 13 Feb 2004 02:49:43 -0500 (EST)
Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1ArY4z-0003ng-00 for entmib@ietf.org; Fri, 13 Feb 2004 02:49:41 -0500
Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1ArY41-0003jg-00 for entmib@ietf.org; Fri, 13 Feb 2004 02:48:42 -0500
Received: from shell4.bayarea.net ([209.128.82.1]) by ietf-mx with esmtp (Exim 4.12) id 1ArY3S-0003g7-00 for entmib@ietf.org; Fri, 13 Feb 2004 02:48:06 -0500
Received: from NB5.dsperkins.com (shell4.bayarea.net [209.128.82.1]) by shell4.bayarea.net (8.11.6/8.11.6) with ESMTP id i1D7m4315429; Thu, 12 Feb 2004 23:48:04 -0800
Message-Id: <5.2.0.9.2.20040212232346.01faae60@127.0.0.1>
X-Sender: dperkins@127.0.0.1
X-Mailer: QUALCOMM Windows Eudora Version 5.2.0.9
Date: Thu, 12 Feb 2004 23:41:02 -0800
To: Sharon Chisholm <schishol@nortelnetworks.com>, entmib@ietf.org
From: "David T. Perkins" <dperkins@dsperkins.com>
In-Reply-To: <3549C09B853DD5119B540002A52CDD340A24445E@zcard0ka.ca.norte l.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org
X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60
Subject: [Entmib] Standby
Sender: entmib-admin@ietf.org
Errors-To: entmib-admin@ietf.org
X-BeenThere: entmib@ietf.org
X-Mailman-Version: 2.0.12
Precedence: bulk
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/entmib>, <mailto:entmib-request@ietf.org?subject=unsubscribe>
List-Id: IETF Entity MIB WG <entmib.ietf.org>
List-Post: <mailto:entmib@ietf.org>
List-Help: <mailto:entmib-request@ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/entmib>, <mailto:entmib-request@ietf.org?subject=subscribe>
HI, "Standby status" items should be renamed to "standby state" to be consistent with the other naming of other items in the MIB module. (Items are "state" when value is an enumerated int, and "status" when the value is a bit string.) There is one important value missing from the enums for standby. It is the one that means that the service output is combined with other entities. This is commonly found with power supplies where the output is "summed". Section 2.2 is incorrect. It implies that by reading the value of entStandbyStatus for all entities, then entities can be classified as redundant (or protected). This is not true. Say that there are two entities that are identical and provide a "protected" service. At any time, only one is providing service, and the other is standing by protecting the other. A "protection switch" causes the roles to change (that is the one providing service will switch to standing by, and the one standing by will start to providing service). In general, this MIB module does not provide enough information to determine 1) which entities are protected, 2) the relationship between the entities that are protected and the entities providing protection. Regards, /david t. perkins _______________________________________________ Entmib mailing list Entmib@ietf.org https://www1.ietf.org/mailman/listinfo/entmib
- [Entmib] Standby David T. Perkins