PCP Working Group T. Reddy
Internet-Draft P. Patil
Intended status: Standards Track R. Chandrasekaran
Expires: August 15, 2013 D. Wing
Cisco
February 11, 2013
PCP Server Discovery with IPv4 traffic offload for Proxy Mobile IPv6
draft-rpcw-pcp-pmipv6-serv-discovery-02
Abstract
This document proposes a solution to PCP Server Discovery problems in
Proxy Mobile IPv6 (PMIPv6) networks when both home network traffic
and traffic off-loaded to local access network require traversing a
gateway implementing NAT and/or Firewall. This draft proposes
enhancements to DHCPv4 Relay Agent by introducing a new sub-option
under DHCPv4 Relay Option and to PMIPv6 signaling through additional
options to Proxy Binding Update/Acknowledgement messages.
Status of this Memo
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This Internet-Draft will expire on August 15, 2013.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Solution overview . . . . . . . . . . . . . . . . . . . . . . 4
4. Mobility Options . . . . . . . . . . . . . . . . . . . . . . . 6
5. DHCPv4 Relay Agent co-located with MAG . . . . . . . . . . . . 8
5.1. Format . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2. Relay Agent behavior . . . . . . . . . . . . . . . . . . . 9
5.3. DHCPv4 Server behavior . . . . . . . . . . . . . . . . . . 9
6. DHCPv4 Server co-located with MAG . . . . . . . . . . . . . . 9
7. Security Considerations . . . . . . . . . . . . . . . . . . . 10
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
10. Change History . . . . . . . . . . . . . . . . . . . . . . . . 11
10.1. Changes from draft-rpcw-pcp-pmipv6-serv-discovery-01
to -02 . . . . . . . . . . . . . . . . . . . . . . . . . . 11
11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
11.1. Normative References . . . . . . . . . . . . . . . . . . . 11
11.2. Informative References . . . . . . . . . . . . . . . . . . 12
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12
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1. Introduction
Given the exponential growth in the mobile data traffic, Mobile
Operators are looking for ways to offload some of the IP traffic
flows at the nearest access edge that has an Internet peering point.
This approach results in efficient usage of the mobile packet core
and helps lower the transport cost.
[I-D.ietf-netext-pmipv6-sipto-option] defines a way to signal the
Traffic Offload capability of a Mobile Access Gateway (MAG) to the
Local Mobility Anchor (LMA) in Proxy Mobile IP Networks. There are
scenarios in PMIPv6 Mobile Networks where the traffic going through
datatracker.ietf.org