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Topic: L2TPv3

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L2TP

Encapsulating Security Payload

IPsec

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Traffic engineering

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	Kids.Net.Au - Encyclopedia > L2TPv3 (Site not responding. Last check: 2007-10-10)
		Layer 2 Tunneling Protocol Version 3 is a draft version of L2TP[?] that is proposed as an alternative protocol to MPLS for encapsulation of multiprotocol[?] Layer 2 communications traffic over IP networks.
		L2TPv3 can be regarded as being to MPLS what MPLS is to ATM: a simplified version of the same concept, with much of the goodness achieved with a fraction of the effort, at the cost of losing some technical features considered less important in the market.
		In the case of L2TPv3, the features lost are traffic engineering features considered important in MPLS.
	www.kids.net.au /encyclopedia-wiki/l2/L2TPv3?title=L2TP (152 words)

	RFC 3931 - Layer Two Tunneling Protocol - Version 3 (L2TPv3)
		RFC 3931 L2TPv3 March 2005 Cookie The optional Cookie field contains a variable-length value (maximum 64 bits) used to check the association of a received data message with the session identified by the Session ID. The Cookie MUST be set to the configured or signaled random value for this session.
		RFC 3931 L2TPv3 March 2005 outgoing data message, the sender places the identifier specified in the Local Session ID AVP (received from peer during session establishment) in the Session ID field of the L2TP data header.
		RFC 3931 L2TPv3 March 2005 breakers are sent by both sides, and the tie breaker values are equal, both sides MUST discard their sessions and restart session negotiation with new random tie breaker values.
	www.muonics.com /rfc/rfc3931.php (17270 words)

	RFC 3931 - Layer Two Tunneling Protocol - Version 3 (L2TPv3)
		L2TPv3 Control Message Authentication is similar to L2TPv2 [RFC2661] Tunnel Authentication in its use of a shared secret and one-way hash calculation.
		Standards Track [Page 52] RFC 3931 L2TPv3 March 2005 breakers are sent by both sides, and the tie breaker values are equal, both sides MUST discard their sessions and restart session negotiation with new random tie breaker values.
		Standards Track [Page 57] RFC 3931 L2TPv3 March 2005 In the simplest case, the circuit to which this AVP refers is a single physical interface, port, or circuit, depending on the application and the session setup.
	www.packetizer.com /rfc/rfc3931 (18051 words)

	martini-pwe3-pw-switching-03.txt
		Static MPLS PW and Dynamic L2TPv3 PW When a statically configured MPLS PW is switched to a dynamic L2TPv3 PW, the static control plane should be considered identical to an attachment circuit (AC) in the reference model of Figure 1.
		Static L2TPv3 PW and Dynamic LDP/MPLS PW When a statically configured L2TPv3 PW is switched to a dynamic LDP/MPLS PW, then the static control plane should be considered identical to an attachment circuit (AC) in the reference model of Figure 1.
		L2TPv3 and MPLS PW Data Plane When switching between an MPLS and L2TP PW, packets are sent in their entirety from one PW to the other, replacing the MPLS label stack with the L2TPv3 and IP header or vice versa.
	ietfreport.isoc.org /idref/draft-martini-pwe3-pw-switching (5976 words)

	RFC 4591 - Frame Relay over Layer 2 Tunneling Protocol Version 3 (L2TPv3)
		L2TPv3 Session Establishment PVC creation (provisioning) results in establishment of an L2TP session via the standard three-way handshake described in Section 3.4.1 of [RFC3931].
		L2TPv3 Session Teardown In the event that a PVC is deleted (unprovisioned) at either LCCE, the associated L2TP session MUST be torn down via the CDN message defined in Section 3.4.3 of [RFC3931].
		Standards Track [Page 8] RFC 4591 Frame Relay over L2TPv3 July 2006 The DE bit MAY be set by a policing function on the LCCE to indicate that this frame SHOULD be discarded in preference to other frames in a congestion situation.
	www.packetizer.com /rfc/rfc4591 (3050 words)

	News @ Cisco: Sprint - Layer 2/Layer 3 Services Converged over Common IP Backbone Via L2TPv3 in Cisco IOS Software
		Using L2TPv3, Cisco 7000 Series Routers and Cisco 12000 Series Routers at the ingress to the SprintLink network encapsulate the Layer 2 payload with an L2TPv3 and IP header.
		L2TPv3 reduces complexity as the need for edge routers to support every enterprise VPN routing table and Layer 3 routing environment is eliminated.
		L2TPv3 allows service providers and large enterprises with native IP core networks to integrate and deliver high-speed Layer 2 tunneling or VPN services from their IP infrastructure.
	newsroom.cisco.com /dlls/hd_030403.html (1540 words)

	Light at the end of the L2TPv3 tunnel
		L2TPv3, an extension of the L2TP, is a stateless protocol with no inherent signaling or keep-alive mechanism.
		L2TPv3 extends L2TP by letting it run on higher-speed devices such as routers because of reduced overhead and the related decrease in processing chores.
		And because L2TPv3 adds no new requirements to the IP transport infrastructure, it is inherently easier and simpler to implement and support, because network staff is familiar with IP.
	www.networkworld.com /news/tech/2002/0408tech.html (917 words)

	[No title]
		L2TPv3 Session Establishment ATM circuit (e.g., an AAL5 PVC) creation triggers establishment of an L2TP session using three-way handshake described in Section 3.4.1 of [RFC3931].
		L2TPv3 Session Teardown When an ATM circuit is unprovisioned (deleted) at either LCCE, the associated L2TP session MUST be torn down via the CDN message defined in Section 3.4.3 of [RFC3931].
		L2TPv3 Session Maintenance All sessions established by a given Control Connection utilize the L2TP Hello facility defined in Section 4.4 of [RFC3931] for session keepalive.
	www.rfc-editor.org /rfc/rfc4454.txt (6366 words)

	RFC 4719 - Transport of Ethernet Frames over Layer 2 Tunneling Protocol Version 3 (L2TPv3). R. Aggarwal, Ed., M. ... (Site not responding. Last check: 2007-10-10)
		PW Establishment With L2TPv3 as the tunneling protocol, Ethernet PWs are L2TPv3 sessions.
		RFC 4719 Transport of Ethernet Frames over L2TPv3 November 2006 Note that an L2TP Outgoing Call is essentially a method of controlling the originating point of a Switched Virtual Circuit (SVC), allowing it to be established from any reachable L2TP-enabled device able to perform outgoing calls.
		RFC 4719 Transport of Ethernet Frames over L2TPv3 November 2006 o While architecturally [RFC3985] outside the scope of the L2TPv3 PW itself, if VLAN tags are present, the NSP may rewrite VLAN tags on ingress or egress from the PW (see Section 3.1).
	rfc.sunsite.dk /rfc/rfc4719.html (3271 words)

	[No title]
		L2TPv3 Session Establishment Associating an HDLC serial interface with a PW and its transition to "Ready" or "Up" results in the establishment of an L2TP session via the standard three-way handshake described in Section 3.4.1 of [RFC3931].
		L2TPv3 Session Teardown In the event a link is removed (unprovisioned) at either LCCE, the associated L2TP session MUST be torn down via the CDN message defined in Section 3.4.3 of [RFC3931].
		MTU Considerations With L2TPv3 as the tunneling protocol, the packet resulting from the encapsulation is N bytes longer than the HDLC frame without the flags or FCS.
	www.isi.edu /in-notes/rfc4349.txt (2515 words)

	News @ Cisco: Q&A: Cisco and Sprint Develop New Protocol To Facilitate The Roll-Out Of Sprint Services
		L2TPv3 was pioneered by Cisco in collaboration with Sprint.
		In addition, L2TPv3 enables our customers to expand their global reach by utilizing their existing IP infrastructures to connect geographically disparate networks.
		In fact, by deploying L2TPv3 across our global IP backbone, we were able to roll out three new high-performance, cost-effective data networking services in a matter of months with no additional capital investment.
	newsroom.cisco.com /dlls/ts_013003.html (901 words)

	Network Systems DesignLine \| A Virtualization Technologies Primer: Theory--Part VII
		The L2TPv3 protocol consists of components to bring up, maintain, and tear down sessions, and the capability to multiplex different Layer 2 streams into a tunnel.
		is a large number and, as long as it is random, the cookie makes L2TPv3 impervious to brute-force spoofing attacks, where the attacker tries to inject packets into an active session.
		At Gigabit, or 10 Gigabit speeds, the number of bytes used by a well-designed protocol is not really an issue, as long as the implementation runs in hardware.
	www.networksystemsdesignline.com /howto/196600381 (886 words)

	[No title]
		The Default L2-Specific Sublayer for L2TPv3 is defined in Section 4.6.
		In the case in which a tie is detected, tie Lau, et al.
		This AVP adopts the latter terminology, though the concept remains the same regardless of the PW type for the L2TP session.
	www.ietf.org /rfc/rfc3931.txt (18554 words)

	php-deluxe.net - description L2TPv3
		Layer 2 Tunneling Protocol Version 3 is a draft version of L2TP that is proposed as an alternative protocol to MPLS for encapsulation of multiprotocol Layer 2 communications traffic over Internet Protocol networks.
		Like L2TP, L2TPv3 provides a ‘pseudo-wire’; service, but scaled to fit carrier requirements.
		L2TPv3 can be regarded as being to MPLS what MPLS is to of L2TPv3 is also significantly bigger than MPLS.
	www.php-deluxe.net /encyclopedia,index.page,L2TPv3.htm (121 words)

	Sprint Business: Products and Services: Data Networking Services: Layer 2 Tunneling Protocol, Version 3
		L2TPv3 tunnels Layer 2 frames seamlessly across an IP-based packet network, providing authenticated tunneling to allow Layer 2 traffic to securely traverse a native IP core.
		Designed to add the simplicity and power of IP-based communications to secure Layer 2 protocols, L2TPv3 offers the opportunity to capitalize on the performance, survivability and flexibility inherent in the Sprint Tier 1 IP network.
		Sprint has implemented L2TPv3 across its entire IP network without having to re-engineer the network or change its architecture.
	www.sprintbiz.com /products/sprintlink/frame_relay/details_pop.html (132 words)

	Roxen Community: RFC 4719 Transport of Ethernet Frames over Layer 2 Tunneling Protocol Version 3 (L2TPv3) (Standards ...
		With L2TPv3 as the tunneling protocol, Ethernet PWs are L2TPv3 sessions.
		With L2TPv3 as the tunneling protocol, the IP packet resulting from the encapsulation is M + N bytes longer than the Ethernet frame without the preamble or FCS.
		Ethernet over L2TPv3 is subject to all of the general security considerations outlined in [RFC3931].
	community.roxen.com /developers/idocs/rfc/rfc4719.html (3355 words)

	Roxen Community: RFC 3931 Layer Two Tunneling Protocol - Version 3 (L2TPv3) (Standards Track)
		L2TPv3 over UDP must consider other L2 tunneling protocols that may be operating in the same environment, including L2TPv2 [RFC2661] and L2F [RFC2341].
		L2TPv2 and L2TPv3 environments should be able to coexist while a migration to L2TPv3 is made.
		The format of the L2TPv3 over UDP header is defined in Section 4.1.2.1.
	community.roxen.com /developers/idocs/rfc/rfc3931.html (14996 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		In the scope of this document, it is L2TPv3 tunnel.
		In L2TPv3 PSN, a PW connection typically uses L2TPv3 session to carry the traffic.
		It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an instance of this MIB module, is properly configured to give access to the objects only to those principals "users" that have legitimate rights to indeed GET or SET "change/create/delete" them.
	www.ietf.org /internet-drafts/draft-nadeau-l2tpext-pw-l2tpv3-mib-00.txt (2180 words)

	ttgapers store - USA - Layer 2 VPN Architectures (Networking Technology) - Wei Luo, Carlos Pignataro, Anthony YH Chan, ... (Site not responding. Last check: 2007-10-10)
		The case studies include all Layer 2 technologies transported using AToM and L2TPv3 pseudowires, including Ethernet, Ethernet VLAN, HDLC, PPP, Frame Relay, ATM AAL5 and ATM cells, and advanced topics relevant to Layer 2 VPN deployment, such as QoS and scalability.
		An in depth discussion of AtoM, Anything over MPLS, L2TPv3 and VPLS are presented to the reader.
		For the discussions on AToM and L2TPv3 the authors include the LAN and WAN protocols that can be transported over the two technologies.
	www.ttgapers.com /module-ttStore-product-asin-1587051680-locale-us.html (916 words)

	L2TP - Wikipedia, the free encyclopedia
		Published in 1999 as proposed standard RFC 2661, L2TP has its origins primarily in two older tunneling protocols for PPP: Cisco's Layer 2 Forwarding (L2F) and Microsoft's Point-to-Point Tunneling Protocol (PPTP).
		A new version of this protocol, L2TPv3, was published as proposed standard RFC 3931 in 2005.
		L2TPv3 provides additional security features, improved encapsulation, and the ability to carry data links other than simply PPP over an IP network (e.g., Frame Relay, Ethernet, ATM, etc).
	en.wikipedia.org /wiki/L2TP (1405 words)

	I-D ACTION:draft-townsley-l2tpv3-mpls-01.txt
		Title : Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3 Author(s) : M. Townsley Filename : draft-townsley-l2tpv3-mpls-01.txt Pages : 7 Date : 2003-12-4 The Layer 2 Tunneling Protocol, Version 3, (L2TPv3) defines a protocol for tunneling a variety of payload types over IP networks.
		This document defines how to carry an MPLS label or label stack and its payload over L2TPv3.
		This enables an application which traditionally requires an MPLS-enabled core network to utilize an L2TPv3 encapsulation over an IP network instead.
	www.mail-archive.com /l2tpext@ietf.org/msg00026.html (278 words)

	Layer Two Tunneling Protocol Extensions (l2tpext) Internet Drafts (Site not responding. Last check: 2007-10-10)
		This document describes an extension to L2TP, in order to have an efficient use of L2TP tunnels within the context of deploying multicast services whose data will have to be conveyed by such tunnels.
		L2TPv3 defines the base control protocol and encapsulation for tunneling multiple layer 2 connections between two IP connected nodes.
		The Layer 2 Tunneling Protocol, Version 3, (L2TPv3) defines a protocol for tunneling a variety of data link protocols over IP networks.
	www.potaroo.net /ietf/ids-wg-l2tpext.html (1408 words)

	gmane.ietf.mpls (Site not responding. Last check: 2007-10-10)
		Working Group, the reception of the draft was a wee bit ambigious (some no, some no need and some yes), with some service providers strongly in favor.
		On Feb 4, 2005, at 4:43 AM, Loa Andersson wrote: > Working Group, > > the reception of the draft was a wee bit ambigious (some no, some no > need and some yes), with some service providers strongly in favor.
		Loa Andersson wrote: > Working Group, > > the reception of the draft was a wee bit ambigious (some no, some no > need and some yes), with some service providers strongly in favor.
	blog.gmane.org /gmane.ietf.mpls/day=20050204 (1201 words)

	l2tpv3 and vlans
		RSTP will do the trick but again one of the links will be blocked.
		I've come across l2tpv3 (layer two tunneling protocol version three)
		Can anyone help me out here, has anyone implemented l2tpv3 to solve
	www.velocityreviews.com /forums/t30822-l2tpv3-and-vlans.html (1271 words)

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