White Papers and Tech Tips

Network Protocol Testing Overview — Learn about the categories of network testing and determine how to apply the right ones to your testing effort.
Instance IDs in SNMP — Understanding scalar and columnar objects and the concept of multiple instances of one object.
Limitations of ICMP Echo for network measurement — ICMP Echo, more commonly known as "ping" is not a valid tool for measuring network distance or performance.
End-to-End VoIP Product Comparison Testing — More than vendors want to admit, the voice quality of VoIP calls depends on the software in the receiving phone.
Implementing Secure Network Management — Covering the fundamentals of security within SNMPv3 for new users and administrators.
Network Emulation FAQ — Understanding modelers, emulators, and simulators. Choose the right one for your task.
The Top Six MIB Creation Errors — The private MIB errors that we see time and time again.
Causes and Correlation of Network Impairments — Learn how ARP cache timeouts and leaky VLANS (among other things) create delay, loss, jitter, and more to packets as they traverse the network.
POSIX Standard Test Results in SNMP Testing — Setting up the fully integrated, fully automated test lab.
Using The Windows SNMP Agent — Try the SNMP Test Suite even if you don't have a network or a product to test.
Frequently Asked Questions About SNMP Testing — Having a hard time understanding the benefits of SNMP Testing? Read some of the frequently asked questions here.
Standard Names For Versions Of The SNMP Protocol — SNMPv1, v2c, v2u, v3 --which one should I be using?
Lexicographic Ordering — You should care about lexicographic ordering because it is required by GETNEXT and GETBULK operations.
BITS Must Not Be Imported — Get to the bottom of a common area of confusion among SNMP MIB designers.
Advisory Board Rules on snmpInASNParseErrs — InterWorking Labs' Advisory Board took a survey and made a decision on the test results, PDUs and incrementing snmpInASNParseErrs.
Towards Useful Management - The Simple Times — SNMP's greatest success is in providing the framework to deliver management capabilities for highly focused, device specific applications. The industry needs to move beyond this accomplishment.
Correct Lexi Ordering Earns Jeff Johnson a Trip to the Big Island of Hawaii — This is an article about the winner of our challenge to correctly implement lexicographic ordering in a released product, and why it was important to him and his company.

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