Training

9 Most Common Router Bugs

5 min read

QA Cafe has been testing CPE routers since 2002 trying to test as many routers as we can find. During this time we have learned that the quality level of home and business routers/gateways on the market varies considerably. The following are some of the common problems that are exposed by testing with the CDRouter test suite. Packet Loss During the DHCP Renewal Process The CDRouter test suite can force a router to renew its DHCP lease at short intervals. Keep reading

Training

DHCPv6 Prefix Delegation in Edge Routers

4 min read

In the course of developing the test suite for DHCPv6 prefix delegation, QA Cafe encountered a number of implementation issues that impact the functionality of IPv6 connectivity. Some of these potential implementation issues are discussed below. Implementation Issues with IPv6 Prefix Delegation in DHCP Now that IPv6 is moving out of the core and into residential networks, DHCPv6 prefix delegation has emerged as the leading technique to provision IPv6 CPE devices. Keep reading

Training

Exploring scaling tests - Is your home gateway IoT ready?

4 min read

By now we’ve all heard of the coming flood of network aware devices collectively referred to as the “Internet of Things”. While the term encompasses a wide variety of use cases that are not all clearly defined, we can come up with some rudimentary expectations on how this influx of connections will affect networks. For the home gateway, the most significant impact is how to handle an order of magnitude more connections than most are traditionally designed for - how well does it scale? Keep reading

Training

DHCP Server Testing with CDRouter

8 min read

CDRouter’s pre-defined test modules make it easy to quickly test and evaluate a CPE implementation’s integrated DHCP server. In addition, CDRouter’s flexible configuration options allow a wide variety of DHCP server scenarios to be simulated and tested in a consistent and repeatable fashion. The base version of CDRouter includes two test modules designed specifically for verifying a CPE’s DHCP server functionality. The first module, dhcp-s.tcl, includes targeted functional test cases while the second module, scaling. Keep reading