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Cisco Bug: CSCta20591 - SNMP reports wrong ifOperStatus for SONET controllers

Last Modified

Jan 31, 2017

Products (1)

  • Cisco 7600 Series Routers

Known Affected Releases

12.2(33)SRB4

Description (partial)

Symptom:
The customer observed the operating status of interfaces having ifType 51 is wrong, being reported as down while via CLI it's actually up.

antasson@sweet-brew-3% snmpwalk -v2c -c public aquarius .1.3.6.1.2.1.2.2.1 | grep "\.145 ="
IF-MIB::ifIndex.145 = INTEGER: 145
IF-MIB::ifDescr.145 = STRING: TU 3/0/0.1/2/5/2
IF-MIB::ifType.145 = INTEGER: sonetVT(51)
IF-MIB::ifSpeed.145 = Gauge32: 2048000
IF-MIB::ifPhysAddress.145 = STRING: 
IF-MIB::ifAdminStatus.145 = INTEGER: up(1)
IF-MIB::ifOperStatus.145 = INTEGER: <CmdBold>down(2)<noCmdBold>
IF-MIB::ifLastChange.145 = Timeticks: (0) 0:00:00.00

while on the device it's:
Aquarius#  sh controllers sonet 3/0/0.1/2/5/2

SONET 3/0/0 is up.
 Path mode C12

 AU-4 1, TUG-3 2, TUG-2 5, E1 2 (C-12 1/2/5/2) is <CmdBold>up<noCmdBold>
  timeslots: 1-31
  No alarms detected.
  Framing is crc4, Clock Source is Internal
  Data in current interval (271 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
(...)

Conditions:
The bug has been verified on a 7600 running 12.2(33)SRB4.
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