Adventures with SNMP and Cisco Nexus (Part 1)

I’ve recently been working with the Splunk SNMP Modular Input and some Cisco Nexus switches to see what sort of data and information I could gather using just the SNMP collector.

It has been an interesting exercise. We were able to get access to Cisco’s product labs where I could (remotely) access some of their high-end hardware, and I was able to test the SNMP collector against the Nexus series 3000, 5000, and 7000 switches.

Lots of devices use SNMP, and the MIBs which I’ll discuss below are relatively universal among switch/router devices, so consider this a practical example of working with SNMP data in Splunk, and some lessons we learned along the way.…

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Adventures with SNMP and Cisco Nexus (Part 2)

I’ve recently been working with the Splunk SNMP Modular Input and some Cisco Nexus switches to see what sort of data and information I could gather using just the SNMP collector.

It has been an interesting exercise. We were able to get access to Cisco’s product labs where I could (remotely) access some of their high-end hardware, and I was able to test the SNMP collector against the Nexus series 3000, 5000, and 7000 switches.

Lots of devices use SNMP, and the MIBs which I’ll discuss below are relatively universal among switch/router devices, so consider this a practical example of working with SNMP data in Splunk, and some lessons we learned along the way.…

» Continue reading

Making SNMP Simpler

Overview

From Wikipedia :

Simple Network Management Protocol (SNMP) is an “Internet-standard protocol for managing devices on IP networks”. Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks, and more.

SNMP exposes management data in the form of variables on the managed systems.

The variables accessible via SNMP are organized in hierarchies. These hierarchies, and other metadata (such as type and description of the variable), are described by Management Information Bases (MIBs).

MIBs describe the structure of the management data of a device subsystem; they use a hierarchical namespace containing object identifiers (OID). Each OID identifies a variable that can be read or set via SNMP. MIBs use the notation defined by ASN.1.

SNMP agents can …

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