Archive for telecoms category:

Internet broken for ASN32 speakers today.

By andy
Published on December 10th, 2008
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Not trying to point fingers or name-and-shame, just to raise the profile of a nasty little bug handling breaches of RFC4893.  This post is basically shaped from a message I posted to nanog earlier.
AS196629 (3.21 in asdot) announce 91.207.218.0/23.  Experienced eyes will notice that this is quite a large as number.  It’s a ‘new’ 4-byte [...]

2011 – An addressing odyssey. Preparing enterprise for IPv6.

By andy
Published on December 4th, 2008
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Yesterday I gave a talk to Sheffield GeekUp on preparing enterprises for IPv6 [download].  The premise of the talk was :

IPv4 addresses are scarse, and at current consumption rates, the IANA pool of free v4 addresses will be gone at the start of 2011.
This starts a “Post IPv4 world” where the IPv4 internet continues to [...]

VoIP For Network Operators Tutorial

By andy
Published on October 13th, 2008
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These are the slides that I presented at NANOG44 in Los Angeles on Sunday, “VoIP For Network Operators“.
This talk was for network operators looking to build voice segments of their network, and the slides cover

Voice Basics for SPs
Why Operators should care
Voice Peering
Metrics
VoIP Security

Vodafone’s legal challenge to fast porting.

By andy
Published on February 4th, 2008
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I tried to open some dialogue with colleague members of the ITSPA about Vodafone’s legal challenge to Ofcom’s two-hour number port ruling.  Instead I got a number of offlist replies suggesting Vodafone’s challenge is still news to many in the industry.
Today, if you want to port your number from one service provider to another, it [...]

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