DECnet MIB question
Debasis Dalapati <deb@tci.bell-atl.com> Mon, 10 August 1992 23:04 UTC
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Date: Mon, 10 Aug 92 18:57:49 EDT
From: Debasis Dalapati <deb@tci.bell-atl.com>
Message-Id: <9208102257.AA19615@tci.bell-atl.com>
To: phiv-mib@pa.dec.com
Subject: DECnet MIB question
Hi, I am looking at the document "DECnet Digital Network Architecture Phase IV, Routing layer Functional Specification, December 1983" and not sure how the following management information is modeled in the Phase IV mib specification. 1) page 38-39, adjacency database. Adjacencies are for broadcast circuits, neighbors on non-broadcast circuits, all router adjacencies on the ethernets and endnodes in the home-area. In the RFC1289, page 50 for Adjacency group, PhivAdjEntry is INDEXed by phivAdjCircuitIndex. The DESCRIPTION for phivAdjCircuitIndex is "A unique index value for each known circuit". This is fine if only the broadcast circuit adjacencies are of management interest. Are the broadcast router adjacencies and endnode adjacencies are of no management interest? Why? Is it because they are of transient nature based on the hello timer? If all kind of adjacencies at a given point of time are of management interest, should not the INDEXing be through phivAdjNodeAddr with some way of identifying the multiple broadcast circuit adjacencies? 2) In the RFC1289, page 53-59 talks about line table and non-broadcast line table. In the UNIX environment, these tables may be initialized from the kernel. In the non-UNIX environment, at least for my target environment, it is other way; the drivers ( at least the non-broadcast ones) start by reading these table. In other words, these tables are populated at initialization. Would it be appropriate to define a new ACCESS type that brings out the fact that some objects are writable at initialization only and then they are read-only? 3) IfIndex is so specific to UNIX environment and it is used to describe few objects in the MIB spec! A non-UNIX person just asked me the question after looking at the MIB spec? I would appreciate any help you could provide. Thank you. ( Thank you Jon@dec.com for your previous reply. I missed it in my previous mail to you.) [ deb@tci.bell-atl.com ] [ Debasis Dalapati Bell Atlantic Software Systems ] [ Expressed opinions are only mine. ]
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