Re: [Adslmib] hdsl2ShdslMIB: SpanConfNumRepeaters & StatusNumAvailRepeaters question

[Scott Baillie <sbaillie at bigpond.net.au>]

Hi Artem,

The answer to your question is in the header section of
RFC4319. I have included the relevant paragraph below.


An hdsl2ShdslSpanInvalidNumRepeaters notification may be generated
following completion of the discovery phase if the number of
repeaters discovered on the line differs from the number of repeaters
specified in hdsl2ShdslSpanConfNumRepeaters.  For those conditions
where the number of provisioned repeaters is greater than those
encountered during span discovery, all table entries associated with
the nonexistent repeaters are to be discarded.  For those conditions
where the number of provisioned repeaters is less than those
encountered during span discovery, additional table entries are to be
created using the default span configuration profile.


Regards,

Scott.



On Sun, 2009-10-18 at 14:53 +0700, Artem Polyakov wrote:
> Hello,
> 
> I work on SNMP support for Sigrand devices (www.sigrand.com).
> 
> I have a question connected with representation of repeaters in SNMP.
> Consider following example: We have a span with 
> hdsl2ShdslSpanConfNumRepeaters = 6
> hdsl2ShdslStatusNumAvailRepeaters = 3
> 
> How many repeaters I should represent in tables which use
> hdsl2ShdslInvIndex or UnitId as index?
> 
> As MIB says in hdsl2ShdslInventoryTable for hdsl2ShdslInvIndex:
> Each entry in this table corresponds to a physical element in an
> HDSL2/SHDSL span.  It is based on the EOC unit addressing scheme with
> reference to the xtuC.
> 
> So I assume that I have to create entries in tables only for
> discovered units. But I need to know for sure.
> 
> And there is another related question:
> Let's suppose that channel was working with 6 repeaters. Statistics
> was accumulated. Then link got down, discovery process started again.
> The reason of link down is a damage of segment between SRU3 & SRU4. So
> now we have a span with only 3 discovered repeaters (I use STU-C
> polling only). So if the answer for the first question is "yes, you
> need to represent only discovered units", I have to show only
> following units: STU-C, SRU1,SRU2,SRU3. But maybe it is interesting to
> have access to saved statistics from unavailable units? Does it
> consider in MIB or it is not important?
> 
> Thank you for your answers.
> 
> -- 
> С Уважением, Поляков Артем
> Best regards, Artem Polyakov
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