Videotron delivers on 200Mbps promise

As promised in March, Videotron has launched its highest speed cable broadband package to date, offering 200Mbps/30Mbps download/upload connections under the ‘Ultimate Speed Internet 200’ banner in Quebec City. The DOCSIS 3.0-based package gives consumers monthly data transfer limits up to 200GB for downloads and up to 50GB for uploads, and costs CAD199.95 (USD197.20). A version of the package is also available for business users.

Supplied by TeleGeography


DOCSIS 3.0 Application Reference Test

Due to the dynamic nature of real TCP traffic, its best practice to perform a loopback reference test to determine the sum total of the application load achievable in terms of throughput and latency across the modem/CMTS environment.

With this golden reference it’s now possible to test for degradation across the devices under test and the aggregation switch environment is also quantifiable.

The results above show baseline traffic loads for HTTP and SMTP as well as overall loads upstream and downstream on the physical ports.

DOCSIS - Application LoopBack reference test results

150 Mbps Downstream and ~20Mbps upstream is representative of a load that can be easily attained by each DOCSIS 3.0 cable modem.

By applying an appropriate load with single or multiple applications the required bandwidth in the upstream (FTP PUT, SMTP, HTTP POST VoIP call) and downstream (FTP GET, HTTP GET, Multicast/unicast stream receipt, VoIP call etc.) can be produced. The example below illustrates upstream and downstream load using a multiple application loopback reference test.

Testing DOCSIS 3.0

Cable providers are using DOCSIS 3.0 as an enabling technology.  To ensure the highest quality of service, a complete testing solution can allows you to verify compliancy and performance testing.

DOCSIS testing should include stateful two-way interactive flows.  To measure true quality of experience or service satisfaction require a ‘Per flow’ test approach in which stateful CPE traffic is presented on the cable modem to CPE Interface.  This allows you to test performance on an end-to-end basis from the CMCI (Cable Modem to CPE Interface) to CMTS-NSI (Cable Modem Termination System – Network Side Interface).  Performance testing includes everything from DHCP, IPv6 CPE behavior, QoS effectiveness and the upstream/Downstream channel bonding capability.

Shenick diversifEye “Per-Flow” Test System can deliver these capabilities.  This PDF is an overview of how diversifeye can help you with your testing requirements.