CSIM connection to the world wide Internet
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Description of the various equipment used to connect to Internet.
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The network at CSIM program has the following configuration and connectivity:
Internal CSIM network
- Topology:
- ethernet thinwire and twisted pair
- Address:
- 192.41.170/24
- Autonomous system:
- 4767
- Switch:
- Cisco, Catalyst 3000
- Segments:
- 5, thinwire
- Servers:
- 8, heterogenous
- Routers:
- 2, heterogenous
A more detailed information about the network cabling is available.
Main CSIM Router
This router carries most of the traffic between CSIM network and
Internet worldwide.
- Brand:
- Cisco
- Model:
- 2514
- Name:
- csrouter1.cs.ait.ac.th
- Description:
- 2 ethernet 10Mb ports, 2 serial ports
- Port eth1:
- address 192.41.170.100, connect to internal CSIM network
- Port eth2:
- address 203.159.0.129, connect to Internet worldwide through AIT network
- Port ser1:
- address 192.150.250.230, connect to Nectec and Thailand, is a back up for Japan and worldwide Internet
AIT network
Through AIT
network, access can be provided to the worldwide Internet.
Statistics to AIT network and wide Intervnet through Worldnet.
Nectec and Thailand
This connection to Nectec
offers a direct access to most of the others networks in Thailand.
- Physical support:
- tiwsted pair, microwave
- Speed:
- 64 Kbits/second
- DSU/CSU:
- Nokia, BB512
- Peering address:
- 192.150.250.229
Statistics.
Firewall
The goal of this router is to isolate AIT community from AI³
community, provideing filtering and control facilities.
- Hardware:
- ALR, pentium 100 MHz, 500MB disk, 2 ethernet adapters
- Adapter eth1:
- brand Longshine, running Western Digital WD8013 compatible mode, address 192.41.170.23
- Adapter eth2:
- brand Longshine, running Western Digital WD8013 compatible mode, address 203.159.32.1
Perimeter Network
The aim of this network is to isolate CSIM internal network from AI³ network.
- Topology:
- ethernet twisted pair
- Address:
- 203.159.32.0/30
- Autonomous system:
- 4767
AI³ router
This router connects to Japan through AI³ satellite network. It acts
as a backup for the main
connection to Internet.
- Hardware:
- ALR, pentium 100 MHz, 1.2GB disk, 2 ethernet adapters, 1 serial adapter
- Software:
- BSDi, version 2.1, WISH drivers
- Name:
- ai3gate.cs.ait.ac.th
- Adapter ser1:
- brand Riscom/N2, address 202.249.47.14
- Adapter eth1:
- brand SMC Western Digital 8013, address 202.249.47.65
- Adapter eth2:
- brand Longshine, running Western Digital WD8013 compatible mode, address 203.159.32.2
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AI³-AIT network
This network is designed to run some specific experiments on AI³
testbed, when such experiment need to be isolated from main CSIM
traffic.
- Topology:
- ethernet thinwire
- Address:
- 202.249.47.64/28
- Autonomous System:
- 4717
Satellite modem
The modem connects the serial
port of the AI³ router to the
tranceiver.
- Brand:
- Comstream
- Model:
- CM701
- Hardware configuration:
-
- Tranfer rate:
- 1.536 Mbit/second
- Tx Frequency:
- 78.750 MHz
- Tx symbol rate:
- 1024
- Tx FEC coding:
- Seq 3/4
- Tx modul;ation type:
- QPSK
- Tx differential encoding:
- ON
- Tx filter mask:
- Comstream
- Tx power:
- -20dB
- Tx timing:
- ?
- Tx scrambling:
- Comstream
- Rx Frequency:
- 82.250 MHz
- Rx data rate:
- 1536000 bps
- Rx symbol rate:
- 1024
- Rx modulation type:
- QPSK
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Cables
The satellite modem is connected
to the tranceiver through a pair
of coaxial, 75 Ohm cables. Power supply is not fitted through these
cables.
Tranceiver
The tranceiver receive the radio signal from the satellite and send it to the modem. It also receive the data signal
from the modem and send it to the satellite.
- Brand:
- LC3
- Model:
- serie 8200, 8 watts
- Configuration:
- Force Redundancy: UNKNOWN
Toggle auxiliary output 1: aux output 1 OFF
Toggle auxiliary output 2: aux output 2 OFF
Tx Frequency: 14056 MHz
Tx power backoff: 9dB
Low RF power alarm: NO
Rx frequency: 12306 MHz
Rx Gain control: +0dB
Startup delay: 0 second
Rx control (EFC): 128 amu
Override PA rated power: NO - (rated power: 39 dBm)
Internal poll address: 1
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Antenna dish
- Brand:
- Prodelin
- Model:
- 3.8 meters diameter, Ku-band
- Location:
- 100°37' east, 14°05' north
- Elevation:
- 54.6°
- Azimuth:
- 114.6°
Coverage (Asia Zone beam, horizontal EIRP):
Link from JCSAT3 to NAIST
- Up link:
- frequency
- Down link:
- frequency
Peer ground station
AIT statellite ground station is peering with the AI³ hub, installed
at Nara Institute of Science and
Technology.
- Antenna dish:
-
- Tranceiver:
-
- Modem:
-
- Router:
-
- Address:
- 202.249.47.13
AI³ network
AI³ network offers
satellite links to the project partners, and
through Wide network, it links to
Japan and to worldwide Internet as a backup.
