The ifAlias varbind value is missing in the 0x220001 and 0x220002 event messages

Products

• DX NetOps
• CA Spectrum

Issue/Introduction

The ifAlias value does not appear in the detail of the event, even though there is a value in the trap.

 

Environment

Release : 21.2

Cause

There are two varbinds in the device's trap that are not mapped in Spectrum OOTB (Out Of The Box) $SPECROOT/SS/CsVendor/Cisco_Router/AlertMap file:

• #ifDescr  --> 1.3.6.1.2.1.2.2.1.2(3,2)
• #ifAlias  --> 1.3.6.1.2.1.31.1.1.1.18(17,0)

As per the following URL, the Cisco traps (cieLinkDown and cieLinkUp) do not have the ifAlias varbind:

https://oidref.com/1.3.6.1.4.1.9.9.276.0.1 

Information by cisco

cieLinkDown NOTIFICATION-TYPE
OBJECTS {
ifIndex,
ifAdminStatus,
ifOperStatus,
ifName,
ifType
}
STATUS current
DESCRIPTION
"A cisco specific linkDown notification signifies that the SNMP entity, acting in an agent role, has detected that the ifOperStatus object for one of its communication links is about to enter the down state from some other state (but not from the notPresent state). The varbinds for this notification indicate the interface information of the communication link."
::= { ciscoIfExtensionMIBNotifications 1 }

Resolution

As a workaround Edit/Create the $SPECROOT/custom/Events/AlertMap file and add the following lines below:

# CISCO-IF-EXTENSION-MIB
#cieLinkDown                            ifIndex
1.3.6.1.4.1.9.9.276.0.1      0x00220001 1.3.6.1.2.1.2.2.1.1(1,2)\
                                       #ifDescr
                                        1.3.6.1.2.1.2.2.1.2(3,2)\
                                       #ifType
                                        1.3.6.1.2.1.2.2.1.3(4,2)\
                                       #ifAdminStatus
                                        1.3.6.1.2.1.2.2.1.7(5,2)\
                                       #ifOperStatus
                                        1.3.6.1.2.1.2.2.1.8(6,2)\
                                       #ifName
                                        1.3.6.1.2.1.31.1.1.1.1(16,0)\
                                       #ifAlias
                                        1.3.6.1.2.1.31.1.1.1.18(17,0)

#cieLinkUp                              ifIndex
1.3.6.1.4.1.9.9.276.0.2      0x00220002 1.3.6.1.2.1.2.2.1.1(1,2)\
                                       #ifDescr
                                        1.3.6.1.2.1.2.2.1.2(3,2)\
                                       #ifType
                                        1.3.6.1.2.1.2.2.1.3(4,2)\
                                       #ifAdminStatus
                                        1.3.6.1.2.1.2.2.1.7(5,2)\
                                       #ifOperStatus
                                        1.3.6.1.2.1.2.2.1.8(6,2)\
                                       #ifName
                                        1.3.6.1.2.1.31.1.1.1.1(16,0)\
                                       #ifAlias
                                        1.3.6.1.2.1.31.1.1.1.18(17,0) 

Then click on the "Update Event Configuration" button under the SpectroSERVER Control subview of the VNM model to load the changes into the SpectroSERVER memory.