Smarts IP: Interface Linkupdownstatus has wrong value

Products

• VMware Smart Assurance

Issue/Introduction

Symptoms:




Smarts console displays  the value for the MIB ifLinkUpDownTrapEnable as being 3 (Unknown value) when the device is reporting a 2 (Disabled):




Smarts console displays  the value for the MIB ifLinkUpDownTrapEnable as being 3 (Unknown value) when the device is reporting a 2 (Disabled):
example:

snmpwalk -v 2c  10.10.10.10 1.3.6.1.2.1.31.1.1.1.14 | grep 3013 IF-MIB::ifLinkUpDownTrapEnable.3013 = INTEGER: disabled(2)

Environment

VMware Smart Assurance - SMARTS

Cause

As per the Smarts IP software code:

LinkUpDownTrapEnable - "Status of link up/down trap enable 1=enabled, 2 = disabled = 3"

Resolution

The Smarts software is working as designed.  The value of LinkUpDownTrapEnable is set as 3 by default in the Smarts IP software when the feature is disabled  (1.3.6.1.2.1.31.1.1.1.14.X = 2) on any device other than a Cisco device.

The tpmgr-param.conf file allows for using the LinkUpDownTrapEnable to control how Smarts manages Cisco switch ports, as can be seen below:

# UseifLinkUpDownTrapEnableUse
# Controls whether the IP Manager uses the value of ifLinkUpDownTrapEnable (.1.3.6.1.2.1.31.1.1.1.14) to
# manage or unmanage Cisco switch ports:
# A value of TRUE indicates that the IP Manager uses the value of ifLinkUpDownTrapEnable to manage or
# unmanage Cisco switch ports.
# A value of FALSE indicates that the IP Manager does not use the value of ifLinkUpDownTrapEnable to
# manage or unmanage Cisco switch ports.
#
# Default Value = FALSE
#
UseifLinkUpDownTrapEnable FALSE

In our SMARTS code, this attribute is used only for Cisco devices and not for other devices.

Additional Information

An Enhancement Request has been submitted requesting support for none-Cisco devices.