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Re: [v6ops] draft-ietf-v6ops-ipv6-roaming-analysis WGLC

GangChen <phdgang@gmail.com> Wed, 30 July 2014 03:20 UTC

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References: <201407271800.s6RI04sj008989@irp-lnx1.cisco.com> <alpine.DEB.2.02.1407280906590.7929@uplift.swm.pp.se> <CAM+vMETcGw4TPd2Sy2i7a_0OoFk3844nG=g6Tphi9JDM4h4epA@mail.gmail.com> <alpine.DEB.2.02.1407290708070.7929@uplift.swm.pp.se>
Date: Wed, 30 Jul 2014 11:20:05 +0800
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From: GangChen <phdgang@gmail.com>
To: Mikael Abrahamsson <swmike@swm.pp.se>
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Subject: Re: [v6ops] draft-ietf-v6ops-ipv6-roaming-analysis WGLC
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2014-07-29 13:10 GMT+08:00, Mikael Abrahamsson <swmike@swm.pp.se>:
> On Tue, 29 Jul 2014, GangChen wrote:
>
>> Only the value IPv4v6 is allowed for ext_pdp. If HLR doesn't support
>> IPv4v6 setting(that is the most case pre-R9), in other words, it can't
>> set ext_pdp. It may not able to support all cases.
>
> Then I guess it's a matter of implementation. The HLR I was exposed to,
> did for 2G/3G show to the user that IPv4 could have ext_pdp_type IPv6, and
> this enabled IPv4 and IPv4v6 to work with this setting. If UE asked for
> IPv6 only PDP context that didn't work, so we had to add a profile that
> said "IPv6" without ext_pdp_context_type.

If I understand correctly, the setting would be

#1 is IPv4 + ext_pdp_type; #2 is IPv6 only; Those two profiles have
same ContextId.

#1:

  PDP-Context ::= SEQUENCE {
	pdp-ContextId	ContextId,
	pdp-Type		PDP-Type IPv4
  ....
	ext-pdp-Type	Ext-PDP-Type
  ...
	 }


#2:

  PDP-Context ::= SEQUENCE {
	pdp-ContextId	ContextId,
	pdp-Type		PDP-Type, IPv6
  ....
	 }
	
BRs

Gang

> --
> Mikael Abrahamsson    email: swmike@swm.pp.se
>

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