Preview Tool

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

Last Modified

Jan 31, 2017

Products (1)

  • Cisco 7600 Series Routers

Known Affected Releases


Description (partial)

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 . | 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

The bug has been verified on a 7600 running 12.2(33)SRB4.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.