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Re: [pcp] WG Call for Adoption: draft-tsou-pcp-natcoord-09

Alain Durand <adurand@juniper.net> Mon, 07 January 2013 16:22 UTC

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From: Alain Durand <adurand@juniper.net>
To: Simon Perreault <simon.perreault@viagenie.ca>
Thread-Topic: [pcp] WG Call for Adoption: draft-tsou-pcp-natcoord-09
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Date: Mon, 07 Jan 2013 16:19:08 +0000
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Subject: Re: [pcp] WG Call for Adoption: draft-tsou-pcp-natcoord-09
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On Jan 7, 2013, at 8:13 AM, Simon Perreault <simon.perreault@viagenie.ca> wrote:

> Le 2013-01-07 16:55, Alain Durand a écrit :
>>>> Also, when ports are running low, connections may be delayed until a new port set is acquired.
>>> 
>>> This is up to the PCP client to figure out. The same concern applies to the MAP opcode.
>> 
>> Not sure. with MAP opcode, the logic is that it is the user application that requests the port, in doing so, it knows that it may have to wait a little.
>> With the option described in the draft, the logic is that the CPE makes the request for an additional set of ports, unbeknown to the application...
> 
> There is no such difference. A MAP_PORT_SET request may be made either by an individual application or by the operating system, just like a MAP request.


In theory, yes you are correct. In practice, it depends on the domain of application. If it is for lw4over6 (or similar), then the scenario I describe is the prevalent case.

Alain.

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