BEHAVE Working Group B. Zhou
Internet-Draft H. Deng
Intended status: Informational China Mobile
Expires: April 22, 2010 October 19, 2009
Requirements for Referral in Mobile Network, input to GROBJ BoF
draft-bo-behave-ref-req-00
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Abstract
This document lays out the requirements that need to be met by the
potential referral modifications for the mobile network.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Conventions used in this document . . . . . . . . . . . . . 3
2. Requirements of referral design . . . . . . . . . . . . . . . . 4
2.1. R1 Standard referral format . . . . . . . . . . . . . . . . 4
2.2. R2 Guarantee of NAT traversal . . . . . . . . . . . . . . . 4
3. Security Considerations . . . . . . . . . . . . . . . . . . . . 5
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
5. Normative References . . . . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 8
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1. Introduction
Mobile operators are using referrals in their network to make
entities reachable straightforward. However, this simple approach is
failed by deployment of firewall and translator (like NAT) in the
network, in which causes the translation function happened during the
communication. This document is intended to discuss about the
requirements that need to be met by the potential referral
modifications in the mobile network.
1.1. Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL","SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
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2. Requirements of referral design
2.1. R1 Standard referral format
The referral format need to be standardised. All kinds of
applications can understand the meaning of referral informed.
2.2. R2 Guarantee of NAT traversal
The referral (entity A) need to inform entity B how to reach entity C
with NAT traversal, if there is a NAT between B and C. This can
reduce the cost of NAT ALG.
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3. Security Considerations
This document describes the motivation and requirements for a host
based translation solution and does not create any new security
considerations.
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4. IANA Considerations
This document does not require any IANA actions.
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5. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
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Authors' Addresses
Bo Zhou
China Mobile
Unit2, 28 Xuanwumenxi Ave,Xuanwu District
Beijing 100053
China
Email: zhouboyj@gmail.com
Hui Deng
China Mobile
Unit2, 28 Xuanwumenxi Ave,Xuanwu District
Beijing 100053
China
Email: denghui02@gmail.com
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