< draft-sridharan-virtualization-nvgre-ext-03.txt		draft-sridharan-virtualization-nvgre-ext-04.txt >
	Network Working Group M. Sridharan		Network Working Group M. Sridharan
	Internet Draft Y. Wang		Internet Draft Y. Wang
	Intended Category: Informational P. Garg		Intended Category: Informational P. Garg
	Expires: June 2015 P. Balasubramanian		Expires: December 2015 P. Balasubramanian
	December 2014		June 2015
	NVGRE-EXT: Network Virtualization using Generic Routing		NVGRE-EXT: Network Virtualization using Generic Routing
	Encapsulation Extensions		Encapsulation Extensions
	draft-sridharan-virtualization-nvgre-ext-03.txt		draft-sridharan-virtualization-nvgre-ext-04.txt
	Status of this Memo		Status of this Memo
	This memo provides information for the Internet Community. It does		This memo provides information for the Internet Community. It does
	not specify an Internet standard of any kind; instead it relies on a		not specify an Internet standard of any kind; instead it relies on a
	proposed standard. Distribution of this memo is unlimited.		proposed standard. Distribution of this memo is unlimited.
	Copyright Notice		Copyright Notice
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	document authors. All rights reserved.		document authors. All rights reserved.
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	Drafts.		Drafts.
	skipping to change at page 2, line 5 ¶		skipping to change at page 2, line 5 ¶
	The list of Internet-Draft Shadow Directories can be accessed at		The list of Internet-Draft Shadow Directories can be accessed at
	http://www.ietf.org/shadow.html		http://www.ietf.org/shadow.html
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	This Internet-Draft will expire on June 15, 2015.		This Internet-Draft will expire on December 23, 2015.
	Abstract		Abstract
	This document describes the usage of "Network Virtualization using		This document describes the usage of "Network Virtualization using
	Generic Routing Encapsulation (NVGRE)" Extensions (NVGRE-EXT). The		Generic Routing Encapsulation (NVGRE)" Extensions (NVGRE-EXT). The
	focus of this document is on specifying the control plane operations		focus of this document is on specifying the control plane operations
	done using NVGRE packets.		done using NVGRE packets.
	Table of Contents		Table of Contents
	skipping to change at page 6, line 30 ¶		skipping to change at page 6, line 30 ¶
	| Protocol = ICMP (1 for IPv4, 58 for IPv6) |		| Protocol = ICMP (1 for IPv4, 58 for IPv6) |
	| |		| |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Type = (3 for | Code = (10 | |		| Type = (3 for | Code = (10 | |
	| IPv4, 1 for | for IPv4, 1 | Header Checksum |		| IPv4, 1 for | for IPv4, 1 | Header Checksum |
	| IPv6) | for IPv6 | |		| IPv6) | for IPv6 | |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Data = As much of the original NVGRE packet that triggered |		| Data = As much of the original NVGRE packet that triggered |
	| this message. |		| this message. |
	Figure 2 UNREACHABLE Message Format		UNREACHABLE Message Format
	The outer/delivery headers include the outer Ethernet header and the		The outer/delivery headers include the outer Ethernet header and the
	outer IP header:		outer IP header:
	o Ethernet header: The Ethernet header is populated with the source		o Ethernet header: The Ethernet header is populated with the source
	and destination NVE MAC addresses.		and destination NVE MAC addresses.
	o IP header: The IP header is filled with source and destination NVE		o IP header: The IP header is filled with source and destination NVE
	provider address respectively. The protocol field is set to ICMPv4		provider address respectively. The protocol field is set to ICMPv4
	or ICMPv6 depending upon the IP protocol in use at the NVE.		or ICMPv6 depending upon the IP protocol in use at the NVE.
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