< draft-ietf-l2tpext-pwe3-ethernet-08.txt		draft-ietf-l2tpext-pwe3-ethernet-09.txt >
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	Network Working Group Rahul Aggarwal		Network Working Group Rahul Aggarwal
	Internet Draft Juniper Networks		Internet Draft Juniper Networks
	Expiration Date: February 2007 W. Mark Townsley		Expiration Date: February 2007 W. Mark Townsley
	Maria A. Dos Santos		Maria A. Dos Santos
	Cisco Systems		Cisco Systems
	Editors		Editors
	August 2006		August 2006
	Transport of Ethernet Frames over L2TPv3		Transport of Ethernet Frames over L2TPv3
	draft-ietf-l2tpext-pwe3-ethernet-08.txt		draft-ietf-l2tpext-pwe3-ethernet-09.txt
	Status of this Memo		Status of this Memo
	By submitting this Internet-Draft, each author represents that any		By submitting this Internet-Draft, each author represents that any
	applicable patent or other IPR claims of which he or she is aware		applicable patent or other IPR claims of which he or she is aware
	have been or will be disclosed, and any of which he or she becomes		have been or will be disclosed, and any of which he or she becomes
	aware will be disclosed, in accordance with Section 6 of BCP 79.		aware will be disclosed, in accordance with Section 6 of BCP 79.
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF), its areas, and its working groups. Note that		Task Force (IETF), its areas, and its working groups. Note that
	skipping to change at page 3, line 4 ¶		skipping to change at page 3, line 4 ¶
	2.3 PW Session Monitoring................................. 6		2.3 PW Session Monitoring................................. 6
	3. Packet Processing......................................... 8		3. Packet Processing......................................... 8
	3.1 Encapsulation......................................... 8		3.1 Encapsulation......................................... 8
	3.2 Sequencing............................................ 8		3.2 Sequencing............................................ 8
	3.3 MTU Handling.......................................... 8		3.3 MTU Handling.......................................... 8
	4. Applicability Statement................................... 9		4. Applicability Statement................................... 9
	5. Congestion Control........................................ 11		5. Congestion Control........................................ 11
	6. Security Considerations................................... 11		6. Security Considerations................................... 12
	7. IANA Considerations....................................... 12		7. IANA Considerations....................................... 12
	8. Acknowledgements.......................................... 12		8. Acknowledgements.......................................... 12
	9. References................................................ 12		9. References................................................ 12
	9.1 Normative References.................................. 12		9.1 Normative References.................................. 12
	9.2 Informative References................................ 13		9.2 Informative References................................ 13
	10. Author Information....................................... 13		10. Author Information....................................... 13
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	Sequencing and detecting that the packet loss is higher than a		Sequencing and detecting that the packet loss is higher than a
	threshold) the Ethernet or Ethernet VLAN PW SHOULD be halted by		threshold) the Ethernet or Ethernet VLAN PW SHOULD be halted by
	tearing down the L2TP session via a CDN message. The PW may be		tearing down the L2TP session via a CDN message. The PW may be
	restarted by manual intervention, or by automatic means after an		restarted by manual intervention, or by automatic means after an
	appropriate waiting time. Note that the thresholds and time periods		appropriate waiting time. Note that the thresholds and time periods
	for shutdown and possible automatic recovery need to be carefully		for shutdown and possible automatic recovery need to be carefully
	configured. This is necessary to avoid loss of service due to		configured. This is necessary to avoid loss of service due to
	temporary congestion, and to prevent oscillation between the		temporary congestion, and to prevent oscillation between the
	congested and halted states.		congested and halted states.
			This specification offers no congestion control and is not TCP
			friendly [TFRC]. Future works for PW congestion control (being
			studied by the PWE3 Working Group) will provide congestion control
			for all PW types including Ethernet and Ethernet VLAN PWs.
	6. Security Considerations		6. Security Considerations
	Ethernet over L2TPv3 is subject to all of the general security		Ethernet over L2TPv3 is subject to all of the general security
	considerations outlined in [RFC3931].		considerations outlined in [RFC3931].
	7. IANA Considerations		7. IANA Considerations
	The signaling mechanisms defined in this document rely upon the		The signaling mechanisms defined in this document rely upon the
	allocation of following Ethernet Pseudowire Types (see Pseudo Wire		allocation of following Ethernet Pseudowire Types (see Pseudo Wire
	Capabilities List as defined in 5.4.3 of [RFC3931] and L2TPv3		Capabilities List as defined in 5.4.3 of [RFC3931] and L2TPv3
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	networks virtual bridged local area networks", IEEE		networks virtual bridged local area networks", IEEE
	Std 802.1Q-2005 (Incorporates IEEE Std 802.1Q1998, IEEE		Std 802.1Q-2005 (Incorporates IEEE Std 802.1Q1998, IEEE
	Std 802.1u-2001, IEEE Std 802.1v-2001, and IEEE Std		Std 802.1u-2001, IEEE Std 802.1v-2001, and IEEE Std
	802.1s-2002)		802.1s-2002)
	[802.1ad] IEEE, "IEEE Std 802.1ad - 2005 IEEE Standard for Local		[802.1ad] IEEE, "IEEE Std 802.1ad - 2005 IEEE Standard for Local
	and metropolitan area networks - virtual Bridged Local		and metropolitan area networks - virtual Bridged Local
	Area Networks, Amendment 4: Provider Bridges", IEEE		Area Networks, Amendment 4: Provider Bridges", IEEE
	Std 802.1ad-2005 (Amendment to IEEE Std 8021Q-2005)		Std 802.1ad-2005 (Amendment to IEEE Std 8021Q-2005)
			[TFRC] M. Handley, S. Floyd, J. Padhye, J. Widmer, "TCP
			Friendly Rate Control (TFRC): Protocol Specification",
			RFC3448, January 2003
	10. Author Information		10. Author Information
	Rahul Aggarwal		Rahul Aggarwal
	Juniper Networks		Juniper Networks
	1194 North Mathilda Avenue		1194 North Mathilda Avenue
	Sunnyvale, CA 94089		Sunnyvale, CA 94089
	e-mail: rahul@juniper.net		e-mail: rahul@juniper.net
	W. Mark Townsley		W. Mark Townsley
	Cisco Systems		Cisco Systems
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