NIPPON TELEGRAPH AND TELEPHONE CORPORATION International Procurement Office; Tokyo Opera City Tower 26F 20-2 Nishi-Shinjuku 3-chome Shinjuku-ku, Tokyo 163-14 Japan

58 -- SUPER LARGE SCALE WIDE-AREA VIRTUAL NETWORK SYSTEM. SOL IPO.08-418 DUE 030597 POC Point of Contact -- NTT America, Inc., Head Office, 101 Park Avenue, 41st Floor, New York, NY 10178, 212/661-0810 also NTT America, Inc., Pacific and Western Division 700 E. El Camino Real, Suite #200, Mountain View, CA 94040, 415/940-6565 WEB: NTT International Procurement Information Home Page, http://wwwipo.nttinfo.ntt.co.jp. This public notice is to request suppliers to provide NTT with general referential information on similar products or technology prior to procurement of the intended product (mentioned below) by NTT. This public notice is also to request that any suppliers wishing to participate as a subcontractor in the procurement program of this product should declare their intentions to that effect. This public notice is not intended to guarantee public notification of procurement of the product. (1) Name:Super Large Scale Wide-area Virtual Network System. (2) Overview: This system consists of edge nodes, which connect high speed and high flexible ATM backbone network and fiber optic access networks and / or LANs, and servers such as connectionless server (hereinafter called "CLS"), address resolution server (hereinafter called "ARS"), route server (hereinafter called "RTS") and so on, which support edge nodes. Edge node has multiple interfaces as a physical port, which supports 1,000 subscribers per 150Mbps, and can accommodate max. 10,000 to 40,000 users.CLS located in backbone network provides connectionless transfer function between edge nodes free from upper layer protocols. ARS supports quality guaranteed high speed SVC cut through transfer function to be provided between edge nodes depending on the required quality condition of services, congestion condition of network resources. RTS makes it possible for the network to operate as a virtual router by managing routing information unitarily related to edge nodes. By combining these nodes, a super large scale wide-area virtual network system, which can connect max. 1,000,000 to 10,000,000 users located in wide area and guarantee about 100Kbps throughput to each users simultaneously, can be constructed. {Supplement (Explanation of Terms)} CLS : Relaying mechanism of ATM connectionless networks, which relays cells transmitted by IP packets and MAC flames received edge node (router and so on) with high-speed. There exists performance limit in legacy ATM routers on cell assemble / disassemble and routing software processing. On the other hand, CLS can provide high performance processing economically by cell level routing. Conference and broadcast type application are available by real time multicast services using CLSs. ARS : It is necessary for transmit side edge device to get the ATM address(E.164 / NSAP format) of the destination edge device to perform IP over ATM communication using ATM-SVC between edge nodes (e.g IP host or router) connected to similar or disimilar IP subnets in the IP network using ATM as transmission media. ARS informs the ATM address of the destination edge device as a reply packet based on the request packet with destination IP address from the transmit side edge device. NHRP (NBMA Next Hop Resolution Protocol), being studied at IETF, is one of the concrete protocols. RTS : In IP networks, routing processing function to determine the data transmission route from the destination address on the networks and data transfer processing function for the determined route (forwarding) are needed. In IP networks using route server method, a specific host / server performs routing processing concentrately, which is usually performed by the individual router. This kind of host / server is called route server and performs followings; (i)Exchange of route information with user side routers and catch of the whole network constitution, (ii)Route computation and routing table construction based on the results, (iii)Download of the routing table to edge nodes. As a result, source routing, VPN (Virtual Private Network) are easily supported. OSPF (Open Shortest Path First) / BGP (Border Gateway Protocol) is one of the service interfaces to the user side routers. (3) Contents of RFI: NTT is inviting the following types of information on a product or technology similar to the above- mentioned system. This is not, however, a request for suppliers to provide proprietary and/or confidential information, (i)Technical information [a]Network system Information for system configuration. -Main features -Interconnection form -Functions for user Interfaces, Protocols, Wide-area intranet, Internet connection, Quarity provide services -System Scale Number of communications support stations -Traffic conditions -Operation conditions Service configuration and upgrade, system management, system security, supported standards -Environmental conditions Ambient temparature, Relative humidity, Consumption power, Protection for thunderbplt, Protection for EMC/VCCI [b]Edge node Information for Edge node -Main features -Performance of device control CPU,Applicable OS/Network OS and version -Physical interface types User interfaces, Network interfaces -User services -Network protocol Connectionless core protocol -Scales User side port number, Network side port number, ATM logical interface number per port, Capacity of backbone, Package number, Slot number, Support user number, Backbone route number, Cash address number -Performance Packet processing ability per board/or per system, address resolution time, Routing table renewing time, Performance condition -System managemen Support management protocol, Configuration/Fault/ Performance/Account/Security manegement, Agent / Proxy Agent function -Physical characteristics Appearance, Dimensions, Weights, Earthquake proof, Durable years -Quality Conditions Unoperating ratio, Fault ratio, Error processing ratio [c]Connectionless server Information for Connectionless server -Main features -Performance of device control CPU,Applicable OS/Network OS and version -Physical interface types -Connectionless core protocol -Performance Packet processing ability, Performance conditions -System management Support management protocol, Configuration/Fault/ Performance/Account/Security manegement, Agent / Proxy Agent function -Physical characteristics Appearance, Dimensions, Weights, Earthquake proof, Durable years -Quality Conditions Unoperating ratio, Fault ratio, Error processing ratio [d]Address resolution server Information for Address resolution server -Main features -Conntents for resolution -Performanace Address resolution time, Performance condition -Physical characteristics/or Running environmental conditions Appearance, Physical dimension, Weights/or Software running conditions [e]Route server Information for Route server -Main features -Conntents for resolution -Performanace Route resolution time, Performance condition -Physical characteristics/or Running environmental conditions Appearance, Physical dimension, Weights/or Software running conditions (ii)Price -Unit price, Optional component price, Standard model price, Maintenance fee (iii)System providing conditions -Standard delivery term after receiving order, and repairing conditions (iv)Sale showings -Announcement / Shipping date, Sale showings (v)Other -Enhancement of the system and units Methods and period to enhance the system and unit -Technical supports Technical supports for user, Method and period to change system version -Maintenance The way and period to deal with a breakdown equipment, and volume and theway of offering of manuals for installation -Testing Method of testing, assuring the quality of the connection between units -Plan of enhancement System prospects, and Advanced / Low cost plan -Active proposals likely to become useful for increasing the business of NTT. (4) Request for Declaration of the Intention of Participating as a Subcontractor: Any suppliers wishing to participate as a subcontractor in the product procurement program of NTT, are requested to supply NTT with the information listed below. After preparing a list of supplied information, NTT will provide the list to suppliers who wish to be provided with it, to those who have responded to the request for supply of the information listed and to those who have purchased the PROCUREMENT DOCUMENTATION relating to procurement of the product. NTT, however, will undertake no responsibilies for any outcomes arising from supply of the list, (i)Name of supplier, (ii)Place of contact (Address, name of the person in charge, telephone number, and fascimile number). (5) Deadline of submission of materials and comments: 3:00 PM, March 5, 1997 (Mail must arrive no later than the above date). (6) Language: Japanese or English (0034)

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