Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4

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Publisher: IETF
Doc Type: Standard
Pages: 8
Abstract: The Generic Routing Encapsulation (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 set up the necessary protocol interfaces prior to receiving the mobile node traffic. The new extension allows a Foreign Agent to request GRE tunneling without disturbing the Home Agent behavior specified for Mobile IPv4. GRE tunneling with the Key field allows the operators to have home networks that consist of multiple Virtual Private Networks (VPNs), which may have overlapping home addresses. 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 Foreign Agent and Home Agent 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. [STANDARDS-TRACK]
Publication Date: 2011-05-01
Status Note: Proposed Standard
DOI: 10.17487/RFC6245
Link: https://doi.org/10.17487/RFC6245
Author(s): Parviz Yegani
Kent Leung
Avi Lior
Kuntal Chowdhury
Jay Navali

Latest version of IETF RFC 6245

Document Versions — IETF RFC 6245

▶ IETF RFC 6245 (2011-05-01)

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Normative Reference(s)

3rd Generation Partnership Project 2, "cdma2000 Wireless IP Network Standard: Simple IP and Mobile IP Access Services", 3GPP2 X.S0011-002-E Version 1.0, November 2009, < http://www.3gpp2.org/Public_html/specs/ X.S0011-002-E_v1.0_091116.pdf >. EXTERNAL
IETF RFC 2119 [Active*]
IETF RFC 2784 [Active*]
IETF RFC 2890 [Active*]
IETF RFC 3024 [Active*]
IETF RFC 5944 [Active*]

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IETF RFC 6245, Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4. Available at https://doi.org/10.17487/RFC6245

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<span class="citation"><cite>IETF RFC 6245</cite>, Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4. Available at <a href="https://doi.org/10.17487/RFC6245" target="_blank" rel="noopener">https://doi.org/10.17487/RFC6245</a></span>

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IETF RFC 6245, Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4
doi: 10.17487/RFC6245
url: https://doi.org/10.17487/RFC6245

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<cite id="bib-rfc6245">IETF RFC 6245</cite>, Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4
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Referenced By

IETF RFC 7364 [Active*]