[c-nsp] SFP optical monitoring - feature disappearing?

[Marian Durkovic]

Hello all,

  recently we've discovered a bug in "show interface transceiver" output
on Catalyst3750 - it displays wrong values for Optical Receive Power.
We opened SR 602829983 with Cisco TAC, but after a month of email
exchages we've received a response that according to business unit this 
is not supported on 3750.

  However, SFP diagnostic monitoring was officially released on Cat3750 
in 12.2(20)SE and since then all release notes state:

Minimum Cisco IOS Release for Major Features:

SFP module diagnostic management interface:

Minimum IOS required  12.2(20)SE on Catalyst 3750, 3560, 2970
                      12.2(25)FX on Catalyst 2960

  But when we've opened a support request, we've been denied any support.

  Could anyone please comment/help here? There's only a small bug in one of
the output values, but despite this seems it was decided to silently
discontinue optical monitoring support on these switching platforms. So even
though almost all SFPs are now available from Cisco with optical monitoring,
we won't be able to use this feature on these switches ????

  Here is the sample output describing the bug - all values are correct
except Received Optical Power - also there, the raw A2D readouts in 
parenthessis are correct:

#sh inte tra detail
mA: milliamperes, dBm: decibels (milliwatts), NA or N/A: not applicable.
++ : high alarm, +  : high warning, -  : low warning, -- : low alarm.
A2D readouts (if they differ), are reported in parentheses.
The threshold values are calibrated.

                            High Alarm  High Warn  Low Warn   Low Alarm
        Temperature         Threshold   Threshold  Threshold  Threshold
Port     (Celsius)          (Celsius)   (Celsius)  (Celsius)  (Celsius)
------- ------------------  ----------  ---------  ---------  ---------
Gi1/0/1   46.0               110.0       103.0        -8.0      -12.0
Gi1/0/2   46.5               110.0       103.0        -8.0      -12.0

                            High Alarm  High Warn  Low Warn   Low Alarm
         Voltage            Threshold   Threshold  Threshold  Threshold
Port     (Volts)            (Volts)     (Volts)    (Volts)    (Volts)
-------  ---------------    ----------  ---------  ---------  ---------
Gi1/0/1  3.26                  4.00        3.70        3.00       2.95
Gi1/0/2  3.28                  4.00        3.70        3.00       2.95

                            High Alarm  High Warn  Low Warn   Low Alarm
         Current            Threshold   Threshold  Threshold  Threshold
Port     (milliamperes)     (mA)        (mA)       (mA)       (mA)
-------  -----------------  ----------  ---------  ---------  ---------
Gi1/0/1   24.9                84.0        70.0         4.0        2.0
Gi1/0/2   29.6                84.0        70.0         4.0        2.0

         Optical            High Alarm  High Warn  Low Warn   Low Alarm
         Transmit Power     Threshold   Threshold  Threshold  Threshold
Port     (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
-------  -----------------  ----------  ---------  ---------  ---------
Gi1/0/1    3.0 (  0.6)         8.1         6.9        -2.0       -3.9
Gi1/0/2    3.0 (  0.6)         8.1         7.0        -2.0       -3.9

         Optical            High Alarm  High Warn  Low Warn   Low Alarm
         Receive Power      Threshold   Threshold  Threshold  Threshold
Port     (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
-------  -----------------  ----------  ---------  ---------  ---------
Gi1/0/1    8.1 ( -4.7)         8.1         8.1         8.1        8.1
Gi1/0/2    8.1 (  2.5)         8.1         8.1         8.1        8.1


  Thanks in advance for any comments/help.

  
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----                                                                  ----
----   Marian Durkovic                       network  manager         ----
----                                                                  ----
----   Slovak Technical University           Tel: +421 2 524 51 301   ----
----   Computer Centre, Nam. Slobody 17      Fax: +421 2 524 94 351   ----
----   812 43 Bratislava, Slovak Republic    E-mail/sip: md at bts.sk    ----
----                                                                  ----
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