2002 - cesnet
2002 - cesnet 2002 - cesnet
1. Coprosys – Ceragon FibeAir 155 Mbps• System available in the following bands: 18–38 GHz• The error rate is lower than 10 –13 (comparable to that of an optical fibre)• Price: EUR 55,000 + EUR 5,000 for installation (VAT not included)• Delivery period: 4–6 weeks from date of order2. CBL – Ceragon FibeAir 1528• Device working within bands of 18, 26 and 38 GHz, with the transmissioncapacity of 155 Mbps, in a full duplex mode• Designed for the transmission of STM-1, ATM, Fast Ethernet and combinationsof E1 and E3• Price: EUR 42,000 + EUR 5,000 for installation• Delivery period: 6–8 weeks from signing a contract3. CBL – NERA City Link STM-1• Device working within bands of 18, 23 and 25 GHz, with a maximum transmissioncapacity of 155 Mbps, in a full duplex mode• Designed for the transmission of STM-1, ATM, Fast Ethernet• Price: approx. EUR 63,000 + EUR 5,000 for installation• Delivery period: 10 weeks from signing a contractWe expect that we shall keep updating this list of devices. We plan to use thistechnology only when an upgrade of an existing microwave circuit would benecessary and a lease of optical fibres would be impossible.4.6.1 First Mile according to IEEE 802.11aWireless links based on the new IEEE 802.11a standard make it possible to communicateat speeds of 50–100 Mbps in the so-called free band of 5 GHz. Theyrepresent a new generation of wireless technology that is now commonly used,based on the IEEE 802.11b standard, working in the free band of 2.4 GHz withbandwidth up to 11 Mbps.Wireless devices may work in the point-to-point or point-to-multipoint modes.They usually include access points or devices with a PCMCIA card for wirelesscommunication (e.g., a PC computer configured as a router). In order tocreate a wireless connection between remote points, it is necessary to connectan external antenna to the wireless card, with the corresponding gain andoutput. The approximate price for an access point based on the IEEE 802.11bstandard is EUR 600, the price of a separate wireless PCMCIA card is roughlyEUR 125. This technology is quite appreciated particularly thanks to a goodprice/performance ratio.During the first months of the project, we checked the details concerning theoffered devices and found out that none of the manufacturers of IEEE 802.11a54 High-speed National Research Network and its New Applications 2002
Manufacturerwww.accton.comwww.actiontec.comwww.dlink.comwww.netgear.comwww.intel.comwww.proxim.comLocation802.11a only for US, Canada and Japan802.11a only for US, Canada and Japan802.11a only for US802.11a only for US, Canada and Japan802.11a only for US, Canada and Japan802.11a only for US, Canada and JapanTable 4.7: Products of IEEE 802.11a for 5.3 GHz banddevices offer products using the 5.8 GHz frequency band, assigned for Europeancountries. Manufacturers offer only products designed for the US market,running in the 5.3 GHz band.We inquired among Czech distributors representing the manufacturers mentionedabove who all claimed that no production of devices for the Europeanband of 5.8 GHz has so far been planned. Most of them do not offer even the“US” versions. The only exception is Barco s. r. o. – an official distributor ofProxim devices, which offered the “US” devices for the following prices:• Harmony Access Point 802.11a, EUR 1,000• Harmony CardBus PCMCIA Card 802.11a, EUR 350For the purpose of comparison, the prices for similar devices offered by Intel onthe US market are as follows:• Intel PRO/Wireless 5000 LAN Access Point, USD 450• Intel 802.11a PCMCIA card, USD 180Unlike in common 802.11b cards (e.g., Orinoco), it is impossible to connect theavailable 802.11a PCMCIA cards to an external antenna, necessary for long-distancewireless connection. An external antenna can be connected to accesspoints. For the 5 GHz band, there are antennas available with a gain of 5, 7 and12 dB. It is less than for the 2.4 GHz band, for which antennas of 17, 21 and 24 dBare available.Barco also offers special devices by Proxim – Tsunami ( ) Wireless EthernetBridges, the only device working in the approved 5.8 GHz band. It reaches thespeed of 45 Mbps (full duplex). This device also includes an internal antenna,an external antenna may be connected as well. Using the internal antenna, thereach is 2–8 km; using the external antenna the reach exceeds 10 km (eventhough the output power exceeds the limits approved by the Czech TelecommunicationsOffice). The level of the output power is software controlled. Theprice for this device for a single point is quite high – approx. EUR 12,500 for Tsunamiand EUR 800 for the external antenna.During the second half of the year, we maintained contacts with Czech distributorsof the world’s leading manufacturers of wireless technologies, looking for adevice communicating within the European band. The situation improved to aHigh-speed National Research Network and its New Applications 200255
- Page 3 and 4: Table of Contents1 Introduction 92
- Page 5 and 6: 6.4.3 Support of Special Events. .
- Page 7 and 8: 14.3 Cisco ICM Software . . . . . .
- Page 9 and 10: 1 IntroductionThe report presented
- Page 11 and 12: 2 Brief SummaryThe research plan ti
- Page 13 and 14: men. We designed the basic concept
- Page 15 and 16: 2.4 Other ProjectsThe objective of
- Page 17 and 18: 3 Operation of CESNET2During 2002,
- Page 19 and 20: Canarie622 MbpsESNET622 MbpsGÉANT/
- Page 21 and 22: central network core routers with t
- Page 23 and 24: The existing logical topology of mu
- Page 25 and 26: The logical core topology anticipat
- Page 27 and 28: Within the informative part, we req
- Page 29 and 30: 3.6 Statistical Traffic Analysis3.6
- Page 31 and 32: Figure 3.8: Influence of time step
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- Page 35 and 36: CESNET2-GÉANT, 1.2 Gbps (october)C
- Page 37 and 38: Part IStrategic Projects
- Page 39 and 40: 4 Optical Networks and theirDevelop
- Page 41 and 42: US (TeraGrid with backbone 4 × 10
- Page 43 and 44: ApplicationMiddlewareHigh bandwidth
- Page 45 and 46: 4.2.2 User InterfaceSubscribers (me
- Page 47 and 48: ers will move and that other types
- Page 49 and 50: GermanyCheb10 G34 MPlzeňGÉANT 622
- Page 51 and 52: It is also possible to implement th
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- Page 67 and 68: Missing in this list are especially
- Page 69 and 70: 5.2.7 Connecting End Site NetworksI
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- Page 75 and 76: IPBIpb_0HFEHfe_1SORSor_0LUPLup_0RQR
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- Page 85 and 86: Figure 6.1: Modified program for sh
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1. Coprosys – Ceragon FibeAir 155 Mbps• System available in the following bands: 18–38 GHz• The error rate is lower than 10 –13 (comparable to that of an optical fibre)• Price: EUR 55,000 + EUR 5,000 for installation (VAT not included)• Delivery period: 4–6 weeks from date of order2. CBL – Ceragon FibeAir 1528• Device working within bands of 18, 26 and 38 GHz, with the transmissioncapacity of 155 Mbps, in a full duplex mode• Designed for the transmission of STM-1, ATM, Fast Ethernet and combinationsof E1 and E3• Price: EUR 42,000 + EUR 5,000 for installation• Delivery period: 6–8 weeks from signing a contract3. CBL – NERA City Link STM-1• Device working within bands of 18, 23 and 25 GHz, with a maximum transmissioncapacity of 155 Mbps, in a full duplex mode• Designed for the transmission of STM-1, ATM, Fast Ethernet• Price: approx. EUR 63,000 + EUR 5,000 for installation• Delivery period: 10 weeks from signing a contractWe expect that we shall keep updating this list of devices. We plan to use thistechnology only when an upgrade of an existing microwave circuit would benecessary and a lease of optical fibres would be impossible.4.6.1 First Mile according to IEEE 802.11aWireless links based on the new IEEE 802.11a standard make it possible to communicateat speeds of 50–100 Mbps in the so-called free band of 5 GHz. Theyrepresent a new generation of wireless technology that is now commonly used,based on the IEEE 802.11b standard, working in the free band of 2.4 GHz withbandwidth up to 11 Mbps.Wireless devices may work in the point-to-point or point-to-multipoint modes.They usually include access points or devices with a PCMCIA card for wirelesscommunication (e.g., a PC computer configured as a router). In order tocreate a wireless connection between remote points, it is necessary to connectan external antenna to the wireless card, with the corresponding gain andoutput. The approximate price for an access point based on the IEEE 802.11bstandard is EUR 600, the price of a separate wireless PCMCIA card is roughlyEUR 125. This technology is quite appreciated particularly thanks to a goodprice/performance ratio.During the first months of the project, we checked the details concerning theoffered devices and found out that none of the manufacturers of IEEE 802.11a54 High-speed National Research Network and its New Applications <strong>2002</strong>
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