Spectrum Global Collection for port models are taking a long time to populate.

Products

• DX NetOps
• CA Spectrum

Issue/Introduction

We have created a Global Collection with the following search criteria:

We noticed this Global Collection take a very long time to populate.

Environment

Release : Any
Component: OneClick

Cause

When the Internal_If_Alias attribute id 0x11f82 is used in a Global Collection (GC), it could cause the GC to take a long time to populate as it causes an external read to the internal ifAlias attribute on the device. The most interface models, the longer the search could take.

Additionally, if Spectrum is not able to communicate snmp with a particular interface model, since this is an snmp query, the DCM Timeout and Retry functionality kicks in causing an additional delay in the completion of the search.

Resolution

There are a couple of solutions that can be implemented:

- Setting the following entries in the $SPECROOT/SS/.vnmrc file tells Spectrum to not update the internal port attributes every poll cycle.

sync_all_ext_dev_attrs=FALSE
sync_all_ext_interface_attrs=FALSE

- Use the X_ifAlias attribute id 0x13224 instead of the Internal_If_Alias attribute id 0x11f82.