A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Mobility for IPv4 Working Group of the IETF.
Title : GRE Key Extension for Mobile IPv4
Author(s) : P. Yegani, et al.
Filename : draft-ietf-mip4-gre-key-extension-00.txt
Pages : 9
Date : 2010-05-31
The GRE specification contains a Key field, which MAY contain a value
that is used to identify a particular GRE data stream. This
specification defines a new Mobile IP extension that is used to
exchange the value to be used in the GRE Key field. This extension
further allows the Mobility Agents to setup the necessary protocol
interfaces prior to receiving the mobile's traffic. The new
extension option allows a foreign agent to request GRE tunneling
without disturbing the Home Agent behavior specified for Mobile Ipv4.
GRE tunneling provides an advantage that allows operator's private
home networks to be overlaid and allows the HA to provide overlapping
home addresses to different subscribers. When the tuple < Care of
Address, Home Address and Home Agent Address > is the same across
multiple subscriber sessions, GRE tunneling will provide a means for
the FA and HA to identify data streams for the individual sessions
based on the GRE key. In the absence of this key identifier, the
data streams cannot be distinguished from each other, a significant
drawback when using IP-in-IP tunneling.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-mip4-gre-key-extension-00.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-ietf-mip4-gre-key-extension-00.txt>
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