PMP> Subagent Problem

PMP> Subagent Problem

Bill Wagner bwagner at digprod.com
Thu Mar 13 23:34:06 EST 1997


     
     Chris,
     
     Harry says over a year because the PWG had the idea that we would do 
     our homework and get all the ducks lined up for the next phase of the 
     printer MIB before requesting official work-group sanction. This 
     effort started in October of 1995. We are now on the n'th interation 
     of going over some things, while others remain unaddressed.
     
     
     We had gone over the need to reference RFC 1907 and RFC 1573 many 
     times, and were assure by those whom we beleived to be conniscent that 
     we were 'grandfathered' into not needing them. The change renders many 
     of the existing implementations obsolete, and I have some doubt that 
     there is any functional justification for the expense and 
     cumbersomeness of going to SNMPV2.
     
     I would also say that, if reference to the RFC1213 now must be 
     replaced with RFC 1907 and RFC 1573, I believe even more strongly that 
     these references are unnecessary and inappropriate. The only reference 
     to RFC 1213 in the printer MIB is in relation to the channel index in 
     the description of prtChannelIfIndex. Having the set of MIB's called 
     for in RFC 1573 to correlate a channel to an interface makes no sense. 
     
     The contention, previously expressed by others, that SNMP is 
     cumbersome and inappropriate for printer management would get 
     substantial support if this is the way it goes. Indeed, maybe the best 
     thing would be to leave the MIB at rfc1759.
     
     ______________________________ Reply Separator 
     _________________________________
Subject: Re: PMP> Subagent Problem
Author:  Chris Wellens <chrisw at iwl.com> at Internet
Date:    3/13/97 6:38 PM




     
     
On Mon, 10 Mar 1997, Harry Lewis <harryl at VNET.IBM.COM> wrote:
     
[stuff deleted]
     
> I appreciate the pointer to the SubAgent group, however, I'm not 
> sure multiple agents per device is as prevalent a problem with
> printers as is the device with multiple interfaces.
     
On the subject of multiple interfaces, we should probably make 
sure everyone is reading the same RFCs.  As you know Lloyd and I 
are working on compiling the list of all the required changes to 
RFC 1759 along with the justification.
     
A big change is that all SNMP RFCs are required to support 
SNMPv2.  This means that our references to MIB II, RFC 1213, now 
have to be updated to the two documents that replace it.  These 
are:
     
         RFC 1907 "MIB for Version2 of SNMPv2" 
         RFC 1573 "Evolution of the Interfaces Group of MIB-II"
     
I thought RFC 1573 did a pretty comprehensive job of addressing 
multiple interfaces.  What do you think is missing?
     
[stuff deleted]
     
> When we try to get too granular with this scheme, then we run into
> problems. Gail has demonstrated this lately with each device (printer) 
> sharing some other device (storage) in the hrMIB. But, I don't think
> this is the "multiple agent problem" (is it?). This is lack of
> demarcation of shared resources (and I haven't quite decided how to 
> respond to Gail's dilemma).
     
I will have to reread Gail's email.
     
> I don't know what prompted your note on AgentX. 
     
I am attempting to keep us focused on getting to DRAFT 
Standard.  We cannot afford to drift off into other areas that 
other groups are handling.  That's all.
     



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