Problem

Solution

Source

Comments & further ideas

Access VPN

L2TP

Cisco

“A key building block for Access VPNs is L2TP (Layer 2 Tunneling Protocol), an extension to the Point-to-point (PPP) protocol and a fundamental building block for VPNs.”: http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/l2tun_ds.htm.

Broadcast or multicast

RPR

Riverstone

Packet over SONET (POS) requires multiple packet transmissions: http://downloads.lightreading.com/lighthouse/riverstone/Riverstone_Packet_Ring_Paper.pdf.

Class of Service

DiffServ

Cisco

Good discussion is given in http://www.cisco.com/warp/public/cc/pd/iosw/ioft/iofwft/prodlit/difse_wp.htm.

Fairness in bandwidth access

RPR

Riverstone

Good example of fairness that is useful is given in http://downloads.lightreading.com/lighthouse/riverstone/Riverstone_Packet_Ring_Paper.pdf.

Frame Relay access evolution

MPLS core

Wavesmith Networks

http://www.wavesmithnetworks.com/backtofuture_wp.pdf. Describes how the WaveSmith device is able to bridge both legacy and new MPLS-based networks.

Frame Relay access evolution

MPLS core

FR Forum

http://www.frforum.com/4000/whitepapers/MPLSwhitepaper.pdf. Argues how FR access networks can migrate to MPLS cores.

> 4096 VLANs

MPLS-based VLANs

IETF

http://downloads.lightreading.com/lighthouse/riverstone/MPLS-based_TLS.pdf.

http://www.ietf.org/internet-drafts/draft-lasserre-tls-mpls-00.txt

Layer 2 transport in MANs

GFP

ITU, ANSI T1X1.5

Generic Framing Procedure. T1X1.5/2001-158

Fast convergence of STP algorithm

IEEE 802.1w

IEEE

Foundry Networks’ implementation claims 50ms-5s restoration speed.

Large number of TCP connections at a server site

TCP/IP splicing or TCP/IP termination

TCP/IP splicing is a means of “splicing” together two TCP connections - one towards the client of a transaction and the other toward the server of the transaction - at a TCP-aware switch so that the traversing of network layers that a packet would have to do otherwise is avoided. This requires that appropriate address translations and sequence number modifications be performed in the switch. http://www.usenix.org/events/usits99/full_papers/cohen/cohen.pdf.

Network Based Application Recognition

NBAR

Cisco

http://www.cisco.com/warp/public/cc/so/neso/ienesv/cxne/nbar_ov.htm. It appears that this solution marks packets as “gold” first, and then encodes them into the VPN tunnel. In other words, this is not an intra-VPN classification.

Public Network Evolution

Exploiting ATM network

Cisco

http://downloads.lightreading.com/lighthouse/cisco/migration_strat_wp.pdf

Public Network Services

AT&T

http://www.ipservices.att.com/products/allproducts.cfm

Restoration < 500ms

IEEE 802.1ad

IEEE

Link aggregation is a reasonable solution if this restoration speed is tolerable. 802.3ad?

Traffic engineering in the metro

RPR

Riverstone

RPR provides a reasonably fair solution at layer 2; MPLS is a layer 2.5 solution. http://downloads.lightreading.com/lighthouse/riverstone/Riverstone_Unified_Future.pdf

Tunneling Design in VPNs

Siemens AG

http://www.ietf.org/internet-drafts/draft-hummel-ppvpn-tunnel-systems-01.txt. It refers to another work: http://www.ietf.org/internet-drafts/draft-tsenevir-l2vpn-pmesh-00.txt.

Tunneling in VPNs for scalability

CTCP

NTT

http://www.ietf.org/internet-drafts/draft-kuwahara-cl-tunneling-vpn-00.txt. It defines a tunneling control protocol to vary the tunneling characteristic from among full mesh, partial mesh, hub-and-spoke configurations by making use of cut through tunneling depending on the needs of the traffic.

Use Cases in capturing Requirements

http://www.zoo.co.uk/~z0001039/PracGuides/pg_use_cases.htm. Discusses an example of capturing requirements using use cases.

VPN – Valued-added Services

Cisco

http://www.cisco.com/warp/public/732/Tech/mpls/docs/datasheet0602.pdf. Discusses briefly several things - multicast, NAT, DHCP, VPN Select, etc.

VPN solutions

Access, Extranet, Intranet

Cisco, Nortel

http://www.cisco.com/warp/public/cc/so/neso/vpn/vpnsp/nwvpn_pl.htm. It defines Access, Intranet and Extranet VPNs very well, and the considerations that apply to each of them. Nortel: http://www.nortelnetworks.com/solutions/ip_vpn/self.html.

VPN Reference Architecture

Cisco

http://www.cisco.com/warp/public/cc/so/neso/vpn/msovpn/vipp_ds.htm. It provides a base architecture for VPNs.

Wireless Access Network

3GPP2

http://www.3gpp2.org/Public_html/specs/P.S0001-A_v3.0.pdf. It describes both Intranet and public network accesses.

http://www.3gpp2.org/Public_html/SC/3gcapdescv5.1.pdf 3G Capabilities Description.

Mobile Wireless Internet Forum (MWIF) is on the web at http://www.mwif.org.