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On Tuesday October 8, 2013, I'll be teaching the new IPv6 routing course for the first time. I'm very excited about this new training course!
Full article / permalink - posted 2013-08-20
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On Tuesday October 8, 2013, I'll be teaching the new IPv6 routing course for the first time. I'm very excited about this new training course!
Several times a year I teach two training courses in cooperation with NL-ix: a BGP training course and an IPv6 training course. The thing that makes our BGP training course unique is that half of it consists of the participants getting their hands dirty configuring BGP on a Cisco router. But until now, the IPv6 course was basically just me explaining IPv6 and showing a few examples.
But we now have a new, improved IPv6 training course: the IPv6 routing course. Just like the BGP course, people who participate get the chance to configure IPv6 on a Cisco router. These are the topics covered:
- IPv4 depletion
- IPv6 basics
- types of IPv6 addresses: global, link local, site local, unique site local
- RIPE policy differences between IPv4 and IPv6
- making an IPv6 addressing plan
- stateless autoconfiguration vs DHCPv6
- tunnels
- OSPF for IPv6 (OSPFv3)
- BGP for IPv6
- coexistence and interaction between IPv4 and IPv6 in BGP
- Cisco IOS:
- using ping and traceroute
- monitoring BGP status and progress
- inspecting routing tables and BGP tables
- changing next hop addresses where necessary
- enabling/disabling stateless autoconfiguration
- router advertisement flags and DHCP server or relay
The course is one day from 10 in the morning until about 4:30 in the afternoon at the NL-ix offices in The Hague. Note that the course will be in Dutch. Later this year we'll have one in English. The day before (Monday the 7th) we have our BGP course. Please see the NL-ix website for full details.
Permalink - posted 2013-08-20
Turns out that there is a video book review of my BGP book. It came out three years ago but I just found it. At 59 seconds it's short and sweet, so if you have Flash installed, check it out.
Permalink - posted 2013-07-21
There's now a USB IPv6 keyboard called the IPv6 Buddy. It has the hexadecimal keys as well as the colon, double colon, slash, period, tab and enter keys. So everything you need to enter IPv6 addresses, including IPv4-mapped addresses and CIDR notation prefixes. It also works for MAC addresses.
"With all the time I save entering IPv6 addresses, I can concentrate on more exciting things! Like perfecting my BGP, OSPF and VRRP implementations."
Did I mention that my birthday is in a few weeks?
Permalink - posted 2011-12-13
In this Ars Technica article I discuss some research about attacking BGP in the core of the internet by making BGP packets drop through overloading the data plane. The researchers make some unrealistic assumptions, but the data plane overload issue is real.
Permalink - posted 2011-03-23
I've had a page that shows how many autonomous system numbers the RIRs have given out for a while now. However, when updating the slides for monday's BGP training course I realized that the results are all AS numbers—regardless of whether they're 16- or 32-bit.
So I updated the page. You can now request either 16-bit AS numbers, 32-bit AS numbers, or both. The total number of AS numbers given out so far is 53780. 1744 of those are numbers above 65535, so they're 32-bit. I was actually surprised that the number is this high. So far this year, the RIPE NCC has given out 592 AS numbers (that's more than half of the world total!), 199 of which are 32-bit. So it looks like 32-bit AS deployment is finally picking up.
The number of 16-bit AS numbers given out is 52036, with some 4400 given out in both 2009 and 2010. So at this rate, the 16-bit AS number space will be exhausted in less than three years.
Perform your own queries on the data here. An interesting one is the number of AS numbers per country. For instance, organizations in the US got 302 AS numbers this year so far. And only two of those are 32-bit.
Permalink - posted 2011-03-17
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