RE: WIS -- B1 processing
I guess the question would be how to access these counters. Can they be
accessed via
MDIO interface or require out of band (say a dedicated CPU)path. To make
it useful, I would make them accessible via MDIO. If CPU interface is
required anyway,
the MDIO interface looses much of its utility. Right now I do not see any
such mapping
in 45 (unless they are put in vendor specific area).
Also, a related suggestion on 45 is to put the list of registers together in
a section
for easy reference. I will submit a comment for that.
Regards,
Devendra Tripathi
VidyaWeb, Inc
90 Great Oaks Blvd #206
San Jose, Ca 95119
Tel: (408)226-6800,
Fax: (408)226-6862
> -----Original Message-----
> From: owner-stds-802-3-hssg@ieee.org
> [mailto:owner-stds-802-3-hssg@ieee.org]On Behalf Of Tom Alexander
> Sent: Tuesday, January 02, 2001 2:16 PM
> To: 'Stephen.Finch@ti.com'; stds-802-3-hssg@ieee.org
> Subject: RE: WIS -- B1 processing
>
>
>
> Steve,
>
> The B1 (section parity) check results are not ignored; they are
> provided to Layer Management in the form of the SectionES and
> SectionSES counters in the MIB (30.8.1.1.4 and 30.8.1.1.5).
> However, as the check results are not pertinent to the control
> and operation of the WIS sublayer itself, they do not appear as
> part of the required MDIO register set. I believe this is in
> keeping with customary practice; for example, the 1000 Mb/s MIB
> has a counter for false carrier events detected by the PHY, but
> there is no MDIO register dedicated to this purpose.
>
> Best regards,
>
> - Tom Alexander
>
> -----Original Message-----
> From: Stephen.Finch@ti.com [mailto:Stephen.Finch@ti.com]
> Sent: Friday, December 29, 2000 9:24 AM
> To: stds-802-3-hssg@ieee.org
> Subject: WIS -- B1 processing
> Reference figure 50-3.
>
> The WIS generates and checks the B1 (BIP-8) value. I can find no where
> that the results of the check are used. What should be done with any
> error count that results? There are no MDIO registers defined to take
> this value. Section 30.8.1.1.7 defines a counter that appears to hold
> this info.
>
> Per T1.231 Section 9.2.3.1; "... Performance monitoring using the BIP-8
> for SONET Sections is application specific."
>
> Seems stupid to generate and check it, but ignore any errors that
> result.
>
> Am I missing something?
>
> Steve Finch
>
>