BGPexpert

105.57 million IPv4 addresses used in 2010 so far

Fri, 02 Jul 2010 17:23:15 GMT

We used up 105.57 million addresses in the first half of 2010. So we're on track to beat last year's 203.4 million by a few percent this year. If nothing changes.

The year/decade in IP addresses

Sun, 03 Jan 2010 23:29:41 GMT

For the fifth time now, I wrote an IPv4 address use report over the previous year for this site. And, for the first time, an IPv6 address use report. In addition, I wrote an article for Ars Technica about the IPv4 address use the past year and the past decade. From the Ars article:

Today, ten years later, 2,985 million addresses (81 percent) are in use, and 722 million are still free. In that time, the number of addresses used per year increased from 79 ...

IPv6 and path MTU discovery black holes

Mon, 24 Aug 2009 16:22:39 GMT

A while ago, Geoff Huston wrote a column titled A Tale of Two Protocols: IPv4, IPv6, MTUs and Fragmentation.

Why didn't I read it earlier? Apart from normal busy-ness, I guess I suspected I wouldn't like this column. I was right. In case you don't have half an hour to read all the details, let me summerize the problem: at some point, Geoff couldn't load a page from the RFC Editor website with Safari but it worked with Firefox. Safari uses IPv6 by default (if the system has IPv6 connectiv...

IP address and AS number statistics tools

Wed, 17 Sep 2008 14:15:31 GMT

For some time, I've maintained a number of pages that show address and AS number statistics generated from the delegation reports published by the five regional internet registries on their FTP servers. Time to make a list.

32-bit AS numbers in the wild

Sun, 10 Jun 2007 12:59:03 GMT

In january, Geoff Huston wrote to the NANOG list:

George Michaelson, Randy Bush and myself have successfully tested the implementation of 4Byte AS BGP on a public Internet transit. The above BGP RIB snapshot was taken at a 4Byte BGP speaker in North America, showing a transit path across AS 1221, AS 4637, AS 1239 and AS 3130 , with correct reconstruction of the originating AS at the other (4Byte AS) end.

At the time of this writing, their prefix is no longer visible in the global BGP table...

BGP security: learning an old dog new tricks

Thu, 14 May 2009 14:25:27 GMT

Old dogs can learn new tricks. That's a good thing, because securing inter-domain routing requires a whole bag of them. After lots of talk about S-BGP and soBGP over the past years, more recently, work in the IETF on making inter-domain routing more secure has shifted to a different approach.

Quagga

Tue, 30 Jan 2007 13:39:08 GMT

As Zebra progress has been glacial, a group of people created a fork under the name Quagga. Quagga is more community-based and a somewhat better choice than Zebra in an operational environment....

OpenBGPD

Tue, 30 Jan 2007 13:33:56 GMT

OpenBSD, the security conscious sibling in the BSD operating system family, has its own BGP daemon implementation: OpenBGPD....