Recent Network Management News:
- Published on Tuesday, 10 January 2012 16:00
As noted here on our blog, we have signed all of our domain names and all customers are now using DNSSEC-validating resolvers. Comcast is the first large ISP in the North America to have fully implemented DNSSEC, as part of ongoing efforts to protect our customers with Constant Guard™ from Xfinity. In addition, Comcast Domain Helper has been turned off, as we noted here.
- Published on Wednesday, 09 November 2011 00:00
Comcast has started our first pilot market deployment of IPv6. This first phase supports directly connected CPE, where a single computer is directly connected to a cable device. A subsequent phase will support home gateway devices. To learn more, check out FAQs on the pilot market deployment and the announcement and technical details on our blog.
- Published on Friday, 20 May 2011 16:24
Does Comcast have rules regarding the attachment of devices to our High-Speed Internet network by customers? Yes, and you can find information concerning the devices approved for use on the network, and the tiers of our service that they are appropriate for at http://mydeviceinfo.comcast.net. In order for a cable modem device to be approved for use on the network, it must pass CableLabs certification, UL certification, FCC certification, and Comcast DOCSIS certification testing. Comcast's current DOCSIS device testing requirements and the test scheduling process are described here.
- Published on Thursday, 10 March 2011 16:30
Comcast provides residential and commercial customers with a variety of high speed Internet plans from which to choose, ranging from our Economy tier (with download speeds up to 1.5 megabits per second ("Mbps"), and upload speeds up to 384 kilobits per second ("kbps")) to our Extreme 105 tier (with download speeds up to 105 Mbps, and upload speeds to 10 Mbps). Comcast provisions its customers’ modems and engineers its network to ensure that its customers can enjoy the speeds to which they subscribe. However, Comcast does not guarantee that a customer will actually achieve those speeds at all times. Without purchasing an expensive, dedicated Internet connection, no Internet service provider ("ISP") can guarantee a particular speed at all times to a customer. Comcast advertises its speeds as "up to" a specific level based on the tier of service to which a customer subscribes. Read much more about this topic here.
- Published on Friday, 28 January 2011 16:48
Comcast created this site in 2008 to transparently disclose our network management practices, and we have updated it with relevant information since its inception. Today, we have updated our network management FAQs to describe and explain our current network management practices for our high-speed Internet services.
- Published on Monday, 18 October 2010 16:49
As noted on our blog, starting today we will begin migrating customers who have opted out of our Domain Helper service over to our production DNSSEC-validating servers. This will happen first in a selected part of our Virginia network, and will later expand to all markets in the following sixty days, at which point all of our customers who have opted out of Domain Helper will be migrated. After this has been completed, we will migrate the rest of our customers, which we anticipate will stretch into the early part of 2011. To understand what will happen when a DNSSEC validation failure occurs, see this validation failure FAQ. You may also want to check out this brief introductory video about DNSSEC, as well as our Constant Guard™ page. We've also updated all of our DNSSEC FAQs here.
- Published on Thursday, 30 September 2010 16:52
In October 2009, we announced the market trial of our new Constant Guard™ bot detection and notification system. The system was designed to detect bot activity and send customers a "Service Notice" when we believe their computer has been infected with a bot or other malware. Based on the success of the market trial, we have decided to rollout the bot detection and notification system to our entire network over the next few months. For additional information, feel free to visit our blog post or our Constant Guard™ page.
- Published on Wednesday, 23 June 2010 16:55
Today in Brussels, the Public Interest Registry, operator of the .ORG Top Level Domain (TLD), announced that they have signed the .ORG TLD, enabling support for DNSSEC in that TLD. Coinciding with that announcement and joint testing we have performed with PIR, Comcast is pleased to sign all of our over 650 .ORG domains. This is an important milestone in our continuing work to deploy DNSSEC. You can learn more about this on the Comcast DNSSEC Information Center website at http://www.dnssec.comcast.net and you can find slides we will be presenting at two ICANN DNSSEC workshops tomorrow here and here.