nanog mailing list archives

Re: Dial Concentrators - TNT / APX8000 R.I.P.


From: Alastair Johnson <aj () sneep net>
Date: Tue, 11 May 2010 11:26:36 +0800

Chris Adams wrote:

How are ISPs that still offer dialup going to handle dialup and IPv6?  I
know the TNTs don't do it, and I don't think most of the old equipment
in use in many places does.

Most likely the customers still on dialup are not going to worry about IPv6 - if their systems even support it. In fact several operators I have spoken to have considered their legacy dialup plant as a good place to test Carrier Grade NAT in a low impact manner.

Couple it with some kind of ALG (transparent proxy + DNS tricks) for IPv6-only sites and you have something which might work.

If you really need native IPv6 support for dialup then using a legacy NAS as a dial-terminator LAC and tunneling to an IPv6 capable LNS might be a solution for you.

aj




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