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[pcp] PCP mapping for 5350 and 5351 ports

"Zhangzongjian (Thomas)" <zhangzhongjian@huawei.com> Fri, 14 September 2012 08:19 UTC

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From: "Zhangzongjian (Thomas)" <zhangzhongjian@huawei.com>
To: "pcp@ietf.org" <pcp@ietf.org>
Thread-Topic: PCP mapping for 5350 and 5351 ports
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Date: Fri, 14 Sep 2012 08:17:01 +0000
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Subject: [pcp] PCP mapping for 5350 and 5351 ports
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Dear all

In charter 11.3 of draft draft-ietf-pcp-base-26, it said: 

The PCP server MUST NOT create mappings for the PCP ports themselves
   (5350 and 5351), and SHOULD have a policy control to deny mappings
   for other ports.  In these cases, the error NOT_AUTHORIZED SHOULD be
   returned.

We need to clarify: 
1.
What kinds port that 5350 and 5351 ports must not be used for mapping?  Internal ports ,  external ports or both?

2.
What kinds protocol that the ports must not be used for mapping?  UDP and others?

3.
It also seems that different scenarios have different result. Such as,  PCP server knows public interfaces and private interfaces in box,  Only PCP server in a box or both PCP server and PCP client.



Regards
Thomas

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