RadioLAN Campus BridgeLINK Скачать руководство пользователя страница 137

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890-007 Rev. A 01/28/99

Page 127

location requirements, 2, 10, 11, 15, 21

interface cable, 85
interference, ii
Internet, 40
IP Address, 12

assigning

default gateway, 40
to CPU, 12, 14
to SNMP agent, 40

getting current, 81
getting for DHCP servers, 41
specifying for network devices, 41

IP Address command, 96
IP ASSIGN Utility, 13

installing, 14

IP filters, 52
IP Parameters menu, 92, 96
IP Parameters Page, 39
IPX filters, 53
isolated networks, 40

keyboard shortcuts, 86

LAN.

See

networks

LAN Manager servers, 53
LED indicators, 3, 5, 7

troubleshooting, 108

line frequency, 117
List All Filters Configured command, 102
local area networks.

See

networks

Local Management menu, 86
local port, 5

IP Address assignment and, 13

location requirements, 2, 10, 11, 15

directional antenna, 21

Logon page, 29, 87
logs, 83

sending/receiving, 46

MAC Address, 49

remote stations, 58
wildcards and, 58

MAC Address filters, 51

adding, 60

Содержание Campus BridgeLINK

Страница 2: ...re is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipm...

Страница 3: ...ice be professionally installed by a person knowledgeable in electronics and trained in the correct installation of this device UL safety listing requires that the installation conform to the National Electrical Code sections 810 and 820 All interface cables must be shielded This device complies with Part 15 of FCC rules Operation is subject to the following two conditions 1 this device may not ca...

Страница 4: ...goal at RadioLAN to supply accurate and reliable documentation If you discover a discrepancy in this document please e mail your comments or suggested corrections to marketing radiolan com No part of this publication may be placed in a retrieval system transmitted or reproduced in any way including but not limited to photograph photocopy computer disk or other record without prior agreement and wr...

Страница 5: ...nd Windows NT are trademarks of Microsoft Corporation Netscape is a registered trademark of The Netscape Corporation Novell and NetWare are trademarks of Novell Inc Xerox is a trademark of Xerox Corporation IBM is a trademark of International Business Machines 10BaseRadio and RadioLAN 10 are trademarks of Radio LAN Java is a trademark of Sun Microsystems Inc Manual Conventions The following text f...

Страница 6: ...ions v Introduction 1 The Campus BridgeLINK System 3 The Directional Antenna 8 A Typical Campus BridgeLINK Application 10 Determining the Distance between Buildings 11 Initial IP Address Setup 12 Installing the CPU 15 Tools You Will Need 15 Locating the CPU 16 Mounting the CPU 17 Grounding Considerations 20 Installing the Antenna 21 ...

Страница 7: ...28 Browsing the Network for the CPU 29 Logging onto Campus BridgeLINK Manager 29 Campus BridgeLINK Manager Site Layout 31 Aiming the Directional Antennas 33 Setting Up Security Features 35 Setting Up SNMP Capabilities 36 Setting the CPU s Mode of Operation 47 Securing the CPU with Data Encryption 48 Bridging the Link and 10BaseT Networks 49 Managing Packet Flow Through the CPU 57 Interrogating the...

Страница 8: ...onto the CPU Configuration Screen 87 Using the Main Menu 89 Working with the System Configuration Menu 91 Configuration Manager Menu Items 95 Troubleshooting 108 Glossary 110 Appendix A Indicators Switches and Connectors 113 Indicators 113 MDI MDI X Switch 114 I O Connectors 115 Serial Port Connector 116 Appendix B Technical Specifications 117 Network Protocol 117 Standards Support 117 ...

Страница 9: ... A 01 28 99 Page ix 1999 RadioLAN Electrical Specifications 117 Physical Specifications 118 Environmental Specifications 118 Electromagnetic Emissions 119 Safety Agency Approvals 119 Getting Technical Support 120 ...

Страница 10: ...890 007 Rev A 01 28 99 Page x 1999 RadioLAN Notes ...

Страница 11: ...ation cable degradation due to moisture corrosion or alterations in landscaping can compromise the network connection between the two buildings Repairing and replacing cable runs is also costly time consuming and labor intensive RadioLAN overcomes these difficult installation issues with its Campus BridgeLINK product line This exciting new technology easily connects two buildings using radio frequ...

Страница 12: ...herproof small profile and sturdy Because the directional antenna allows for a 19 angle of operation aiming the antennas so they point toward one another is nearly effortless Connecting two networks in two locations using the old fashioned hard wired method could take days considering the labor intensive effort needed When using Campus BridgeLINK the task is simplified The task of connecting two n...

Страница 13: ...y in a closet or above ceiling tile Campus BridgeLINK Processor Unit CPU The CPU features a number of LED indicators switches and jacks that allows you to connect the module to external devices and help you see the CPU status LED Indicators The face of the CPU features four LED indicators The green Power LED illuminates when power is applied to the CPU As long as the CPU is powered this LED is nor...

Страница 14: ...wireless link During normal CPU operation this LED flickers when near and far CPUs are active One end of the CPU features a button and two ports MDI MDI X selector button 10BaseT port Local port MDI MDI X Switch The MDI MDI X selector button switches the jack s pin assignment of transmit and receive data wire pairs for the 10BaseT port Use MDI X configuration when the remote end of the wires is co...

Страница 15: ...the 10BaseT port are green LEDs which indicate transmit and receive status from the network When the CAR LED illuminates this indicates that the Ethernet carrier is active When the ACT LED illuminates this indicates Ethernet activity on the network This LED flickers during normal operation Local Port Jack Located on the opposite end from the selector button on the same face of the CPU is the local...

Страница 16: ...nector allows you to connect the CRM to the CPU using the cable that is attached to the Radio Unit Mounting Bracket The mounting bracket is specially shaped so that it allows the CRM to slide into the mounting bracket before securing the CPU to a flat surface CPU CRM CRM Port Mounting Bracket Figure 3 CRM Companion Radio Module Port ...

Страница 17: ...the mounting bracket that is attached to the CPU On one end of the CRM there is a Type N connector and an LED indicator The Type N connector attaches the CRM to the directional antenna The LED illuminates amber when the CRM is transmitting data It illuminates green when the CRM is receiving data Directional Antenna Connector Type N CPU Connector Activity LED Figure 4 CRM Companion Radio Module ...

Страница 18: ...ower jack The other end plugs into an electrical outlet RadioLAN recommends using a non switched electrical outlet for connection to the CPU The Directional Antenna The directional antenna assembly includes the directional antenna and a mounting clamp The directional antenna is a 18dbi gain small profile directional antenna It is 8 86 inches square and mounted on a pivoting base Figure 5 Power Tra...

Страница 19: ...w loss cable It is made of fire retardant material and is UV stabilized Cold shrink tubing is supplied to cover the antenna end connector after connection to the cable See the installation instructions packaged with the shrink tubing for installation directions Type N Connectors Figure 7 Low Loss RF Cable ...

Страница 20: ...structions between the two buildings and that each building antenna points toward the other Because the system uses radio frequency to establish the connection between the two buildings it is important to avoid blocking the radio link with any objects such as a trees buildings walls or items that are attached to the building walls such as stairwells fire escapes or other antenna equipment 8 8 Dire...

Страница 21: ...y that you do not exceed the distance capabilities of Campus BridgeLINK If you are unsure of the distance between the two points you can use a measuring device such as optical devices found in some binoculars or a tape measure You can also see the architect s site plan or contact a local surveying service for assistance Building 1 Building 2 Wireless Link Campus BridgeLINK Modules Up to 1 mile apa...

Страница 22: ...ress There are three ways to assign an IP Address to the CPU Connection between the CPU and a PC on the same local LAN segment A VT 100 terminal connection to the CPU Local Port This section describes in detail each method for assigning the CPU an IP Address Figure 10 Quick Configuration 10BaseT Ethernet or Crossover Cable 10BaseT Network Interface Card CPU Power Adapter ...

Страница 23: ...0BaseT Network Interface Card connect an RJ45 10BaseT cable between the CPU and the jack on the PC s Network Interface Card Using the CPU Local Port If you are using the local port connect the serial port from a VT 100 terminal to the CPU local port 2 Connect the Radio Unit to the CPU 3 Connect the CPU s power adapter to the power jack on the CPU 4 Plug the CPU s power adapter into a 115VAC electr...

Страница 24: ...ent for any CPUs that are not configured with an agent IP Address The utility returns a page listing of the Media Access Control MAC Addresses for all non configured CPUs on the LAN segment 3 Highlight the MAC Address for the CPU that you want to configure 4 Enter the desired temporary IP Address for the CPU Later you can permanently set it using the IP PARAMETERS page The utility checks the IP Ad...

Страница 25: ... network cabling and electricity Before selecting an electrical outlet for use in powering the CPU verify that the electrical outlet is non switched for example it is not attached to a wall switch You should also consider placing the CPU in a location where it is out of reach of the general public FCC regulations require that this device be professionally installed by a person knowledgeable in ele...

Страница 26: ...and is within the 15 foot cable distance constraint of the antenna you must install the CPU securely to the mounting surface for example a wall or ceiling 1 2 3 4 5 6 Wired Network Server 10BaseT HUB Campus BridgeLINK Module Non switched Outlet Directional Antenna Switched Outlet Figure 12 Locating the CPU Closely to Network Power and the Antenna ...

Страница 27: ...ute the antenna cable from the directional antenna to the CRM and slip the cold shrink tubing over the end of the cable before connecting the cable to the antenna Connect the cable to the CRM using a clockwise rotation Tighten the antenna connector so that it is snug but does not strip the threads of the connector on the CRM Complete the shrink tubing installation by following the instructions pro...

Страница 28: ... not cross over the mounting brackets and then insert the CRM into the mounting bracket so that it is flush with the rim of the bracket see Figure 14 Orient the CPU on the mounting surface in the location where you would like it to be attached Figure 14 Inserting the CRM into the Bracket ...

Страница 29: ...mounting surface see Figure 15 orienting the screw holes with the mounting anchors then drive screws securely into the surface Tighten down the screws Connecting the Network When connecting the CPU to the hardware network hub or to a PC you must use a RJ45 compatible dual modular cable The cable is an eight wire twisted pair cable and must not exceed the distance limitations provided by the IEEE 8...

Страница 30: ...n instructions and required by your local ordinances RadioLAN recommends that you connect the antenna assembly to a ground rod driven a minimum of 10 feet into the soil For proper grounding of the antenna and cable follow Section 810 of the National Electrical Code Use UL listed ground clamps and lugs Ground Clamp Dish Mounting Hardware Approved Ground Figure 16 Acceptable Ground Source ...

Страница 31: ... on each end Slide the mounting clamp through the two eyeholes on the backside of the directional antenna then secure the clamp to the mounting equipment that you chose A Brief Word About Safety If you chose to mount the antenna high up on a wall make sure that you use the appropriate type of ladder Follow ladder safety tips provided by its manufacturer RadioLAN recommends that you have a partner ...

Страница 32: ...he level of accessibility for routing cable and mounting the CPU If the structure has an eave RadioLAN recommends that you not place the antenna up so high into the eave that the roof blocks a line of sight view to the antenna on the distant Campus BridgeLINK building Before securing the antenna to the wall verify that you can see the distant directional antenna and that the line of site is clear ...

Страница 33: ...h a carpenter s square a ladder and a helper Adjusting the Antenna s Direction To adjust the antenna s direction you will 1 Loosen the U bolts to turn the antenna into the correct side to side direction azimuth 2 Loosen the nut on the tilt mount to adjust the antenna to the proper elevation 3 Tighten all nuts and bolts to safeguard the antenna against direction changes during high winds Fixed Base...

Страница 34: ...likelihood for objects appearing that block the line of site between Campus BridgeLINK sites When planning applications with greater distances avoid problems caused by new construction or a large grove of trees between the two sites by placing the antenna higher This decreases the likelihood for line of site blockages through time Eyeball the Direction Using a carpenter s square see Figure 19 alig...

Страница 35: ...and the CRM and after making sure that the CRM is properly attached to the CPU you can apply power to the CPU following these steps 1 Connect the CPU to the power transformer 2 Connect the power transformer to the electrical outlet If the CPU is properly powered you should notice that the green Power LED illuminates Figure 20 Power Connection Sequence ...

Страница 36: ... a modem to the serial port allows you to dial into the CPU from a remote location to log in and configure or view system performance Dual Remote Management HTML and SNMP The CPU contains an SNMP Simple Network Management Protocol agent When a remote SNMP Manager interrogates the agent the agent presents system configuration and statistical information by way of the MIB Management Information Base...

Страница 37: ...m Requirements To successfully place a CPU into operation you must meet the following requirements The CPU must connect directly to a 10BaseT Network The CPU must be located within one mile of another Campus BridgeLINK CPU The network must use TCP IP to communicate using remote management Browser Requirements To access the CPU by way of a 10BaseT Network you must use a browser that is compatible w...

Страница 38: ... to find the CPU on your network how to log onto the CPU and how to use the CPU Web Site The CPU Web Site The Campus BridgeLINK Manager allows you to view pages which contain configuration information about the CPU Using the Web Site you can assign passwords set up IP Addresses for the CPU and SNMP management stations set address filters and view system performance statistics When using the Campus...

Страница 39: ...D page appears Logging onto Campus BridgeLINK Manager The ENTER NETWORK PASSWORD page provides security to CPU configuration items There are two fields on the page User Name Password If this is the first time that you log on This screen appears only after User Names and passwords are stored in the CPU see Setting Up Security Features on page 35 for more information If no User Names and Passwords a...

Страница 40: ...into the SYSTEM CONFIGURATION ACCESS SECURITY page are allowed access to the program Enter Password The Enter Password field allows you to enter your user password for access to configuration and diagnostic pages Enter your password here and then press Enter to go to the next page If the user name and password match those stored in the ACCESS SECURITY page you will be allowed to view and edit item...

Страница 41: ...ty of the link System Features Enables enhanced CPU features System Configuration Configures the CPU for use with your 10BaseT Network and wireless link System Statistics Displays system performance System Status Displays the system s current status Antenna Aiming Fine tune your directional antenna Reset Resets the CPU System Features Main Menu Node Discovery System Configuration System Statistics...

Страница 42: ...t to view or change Menu items that have a next to them have submenu items that lead to specific pages After selecting a submenu item the right frame of the page changes to display program items and other information You can size the frames by clicking on the divider line and dragging the line to the size that meets your needs Figure 23 Campus BridgeLINK Manager Main Page ...

Страница 43: ...ectional antennas use the ANTENNA AIMING page to find the distant antenna s signal and to improve signal quality The page includes the following items Explicit Address check box CPU Name drop down list box Frame Size field Estimated Distance list Successful field Best field Worst field Sound check box Start button Stop button Save Distance Parameter button Figure 24 Antenna Aiming Page ...

Страница 44: ...election in the Frame Size field Setting the Estimated Distance between Antennas The Estimated Distance list allows you to choose the estimated distance between links Click a value in the list to make your selection After testing you can save the entries on the page by clicking the Save Distance Parameter button Starting and Stopping the Test You can begin and end the testing at any time Click on ...

Страница 45: ...ters to specify a user name You can use letters and numbers for this entry This entry is case sensitive so be sure to note the user name exactly as you enter it here Make your entry then press the Tab key to move to the User Logon Password field The User Password and Retype Password Fields The User Logon Password and verification fields allow you to enter from 1 to 12 characters to specify the use...

Страница 46: ...us information which allows for remote queries for system status and control with SNMP management applications from remote locations on the network There are three basic information pages related to SNMP management Administration Parameters IP Parameters SNMP Parameters After configuring each of these pages you will be able to access the CPU from any location on the 10BaseT Network if you have rig...

Страница 47: ...stem Name System Contact System Location These fields are described in the following sections To access this page select Administration Parameters from the System Configuration menu This page also includes three buttons Reload Reloads entries saved at the last reset OK Accepts entries Choose this button when you have finished entering desired information Use Default Enters default information into...

Страница 48: ...llows you to enter the name of the local administrator to contact for answers to questions and assistance with the system Enter from 1 to 15 letters or numbers for the system contact You may want to include a telephone number where you can reach the contact System Location The System Location field allows you to enter the name of the geographic location of the system Enter from 1 to 15 letters or ...

Страница 49: ... on the IP PARAMETERS PAGE IP Address Subnet Mask Default Gateway IP Address DHCP Operation Modes DHCP Server IP Address In addition to the fields and radio buttons on this page there are three buttons at the bottom of the page Reload Reverts fields to previous entries saved at the last reset OK Accepts entries Choose this button when you have finished entering desired information Use Default Ente...

Страница 50: ... connecting the CPU directly to the Internet standards require using a registered IP Address to avoid duplicates Subnet Mask The Subnet Mask field determines the subnet and IP Address for the agent Typically an IP Address contains the network address and the host address If the network is divided into subnets a part of the host address will be reserved to identify the particular subnet Default Gat...

Страница 51: ...o devices on a network Dynamic addressing allows a device to have a different IP Address each time it connects to the network In some systems the device s IP Address can change even while it is still connected Dynamic addressing makes network administration easier because the software tracks issued IP Addresses rather than requiring an administrator to perform this task Disabled The Disabled radio...

Страница 52: ...oes not permanently save the software Acquire IP Download System Software and Save it If your DHCP Server is equipped for System Software Downloads you can acquire a temporary IP address and update system software with the function as an alternative to FTP and TFTP services discussed in Upgrading System Software on page 74 This selection automatically saves system software when complete DHCP Serve...

Страница 53: ...an edit SNMP Managing Hosts by clicking the Edit button There are three messages that the CPU sends to Trap addresses Cold Start The CPU sends this message when it powers on Warm Start The CPU sends this message when software resets the CPU User Authentication The CPU sends this message if you placed a check mark in the Enabled Authentication Trap check box and if a user had been denied access to ...

Страница 54: ...racters You can use any character to create a string Remote managers use this string as a password to enable the ability to make changes on system objects reported by the local agent Enable Authentication Trap The Authentication Trap sends a message to selected Host Addresses when a remote manager attempts to access the local agent The Enabled check box provides two options Checked This enables Au...

Страница 55: ...work The format of an IP Address is a 32 bit numeric address written as four numbers separated by periods For example 221 142 15 200 could be an IP Address The first segment ranges from 0 to 223 the last three segments range from 0 to 255 Within an isolated network you can assign IP Addresses at random as long as each one is unique If you are connecting the CPU directly to the Internet standards r...

Страница 56: ...rom and make changes to the CPU s configuration program Directing Traps to Manager Stations The Receive Trap column contains radio buttons that allow you to select the following options Yes Instructs the CPU to send Trap messages to the selected Manager Station No Prohibits the selected Manager Station from receiving Trap messages from the CPU Directing the System Log to Manager Stations The Recei...

Страница 57: ...that you will use for operating the CPU This screen displays software options that are currently enabled If you are using CPU version 2 0 or higher the screen allows you to use only one option Point to Point Mode Point to Point Mode Point to Point Mode sets the CPU into a mode of operation suitable for Campus BridgeLINK applications Figure 30 System Operation Mode Page ...

Страница 58: ...ions Enable check box Encryption Key field Data Encryption Enabled Check Box This selection enables or disables Data Encryption on CPU data packets Checked Enables Data Encryption The two CPUs must share the same encryption key to exchange data Clear Disables Data Encryption All CPUs with the same Subnet ID can exchange data Encryption Key and Retype Encryption Key Fields These items set the encry...

Страница 59: ...ed to far end network users found in its current service table If a data packet is addressed to a distant network node that is in the current service table the CPU accepts the data packet then forwards that packet to the distant CPU When a distant node is not in the current service table the CPU does not pass data packets for that node through to the wireless link This method of filtering keeps th...

Страница 60: ...hese pages 10BaseT Parameters page Radio Port Parameters page Each page contains information about filters used by the CPU to route data packets in and out of each network In addition the CONSOLE PORT PAGE sets the baud rate for the local port System Configuration Port Parameters 10BaseT Port Radio Port Console Port Main Menu Figure 32 Getting to the Port Parameters Menu ...

Страница 61: ... that you can enable or disable are as follows MAC Address Filter IP Filter IPX Filter NetBEUI Filter NetBIOS Filter To get to this page select Port Parameters from the System Configuration menu MAC Address Filter The MAC Address Filter check box allows you to enable or disable the CPU s internal MAC Address filter The MAC Address filter is a database that stores MAC Addresses received by the CPU ...

Страница 62: ...heck mark from the check box disables MAC Address filtering This allows all network traffic to flow from the 10BaseT Network into the wireless link Edit Button The Edit button displays the MAC Address database allowing you to enable or disable communication with specific devices on the 10BaseT Network See Managing Packet Flow Through the CPU on page 57 for more information Block IP Packets The Blo...

Страница 63: ...BEUI Packets check box allows you to connect to Windows NT Windows for Workgroups or LAN Manager servers Unchecked Clearing a check mark from the check box enables NetBEUI packet forwarding Checked Placing a check mark in the check box blocks NetBEUI packet forwarding Block NetBIOS Packets The Block NetBIOS Packets check box allows you to connect to networks that use the Network Basic Input Output...

Страница 64: ...twork filters and allows you to examine the MAC Address filter You can edit the MAC Address filters by clicking the Edit button See 10BaseT Port Parameters on page 51 for information about the following filters MAC Address Filter IP Filter IPX Filter NetBEUI Filter NetBIOS Filter To get to this page select Port Parameters from the System Configuration menu Figure 34 Radio Port Parameters Page ...

Страница 65: ...ntify the name of the CPU This appears as the CPU s address on the ANTENNA AIMING page see Selecting the Distant CPU s Address on page 34 for more information Subnet ID The Subnet ID text box allows you to enter the wireless network name Both CPUs use the same Subnet ID designation You can use up to four characters for this entry ...

Страница 66: ...ration menu then select Console Port The CONSOLE PARAMETERS PAGE allows you to set the baud rate for the terminal Select from the following available baud rates 9600 baud 19200 baud 38400 baud 57600 baud After making your selection click the OK button to keep your selection Set the VT100 terminal software for the following Baud Rate selected here 8 bit word 1 stop bit No flow control Figure 35 Con...

Страница 67: ...he CPU is set for optimum performance by default Only advanced users with special circumstances should use the entries on MAC Filter screens Figure 36 shows the 10BASET PORT MAC FILTER EDIT PAGE The CPU contains and manages two identical filtering databases 10BaseT Port MAC Filter List Radio Port MAC Filter List Each of these databases allows you to add up to 32 MAC Addresses and to allow or disal...

Страница 68: ...that you want to enter into the database Although you can use 00 as a specific value for an octet you can also use 00 when creating a wildcard octet Using wildcards allows you to specify a range of addresses as opposed to just a single address For example the first three octets of the MAC Address for all RadioLAN products is 00 A0 D4 If you want to allow all RadioLAN products access to the CPU set...

Страница 69: ... into a mask bytes octet instructs the CPU to mask the octet When the octet is masked the CPU allows any entry to pass Entering an ff into a mask bytes octet and a 00 in the same octet position of the MAC Address instructs the CPU to allow an entry matching only 00 to pass Source Dest The Source Dest column allows you to specify whether the action upon packets will occur if that node is sending or...

Страница 70: ...t MAC Address to pass through Alternatively if Source is enabled in the Source Dest column and the Accept radio button is enabled in the Accept Reject column the CPU allows the message from that MAC Address to pass through If Destination is enabled in the Source Dest column and the Accept radio button is enabled in the Accept Reject column the CPU allows the message from that MAC Address to pass t...

Страница 71: ...MAC Address Choose Reject to disallow the passage of packets to from the MAC Address After adding all desired MAC Addresses click the OK button to exit the EDIT page Modifying MAC Filters To modify a MAC filter select the desired MAC Address Make changes to the address fields and selections in the Source Dest and Accept Reject columns After making changes click the OK button to leave the EDIT page...

Страница 72: ...d for use within the local network Furthermore you can set up redundant paths for bridging which reduces the potential for data path losses due to bridging network outages You can establish a path redundancy for bridging networks and redundancy for ports on the same bridging network Path redundancy creates a loop by means of which data packets can potentially travel indefinitely if the bridge root...

Страница 73: ...lowing items Bridge Priority Hello Time 1 10 Forward Delay Time 4 3 Max Age Time 6 40 Port Priority 0 255 Port Path Cost 1 65 535 Bridge Priority 0 65 535 Each bridge has a unique bridge identifier Priority is a part of that identifier it determines the topology Smaller priority entries increase the probability of the network being selected as the root or primary bridge between other networks Figu...

Страница 74: ...conds for the Hello message interval Forward Delay Time 4 30 When a root bridge has redundant ports it is necessary to set the secondary redundant port to forward information only when the primary port has failed If the primary port operates normally the bridge places the redundant port into a non forwarding state disallowing communication of messages that were transmitted on the operating primary...

Страница 75: ...pares each new frame s source address to entries within its internal routing database If the bridge does not find a new frame s source address in the routing database it adds the new frame s source address to the database The Max Age Time field sets the amount of time in seconds that the bridge stores any source address When the bridge stores a frame s source address the address remains in the rou...

Страница 76: ...ysical interface Each port is associated with a port priority which contributes the topology of the network The lower the number in this field the higher the chance to become the designated port Port Path Cost 1 65 535 Each port is associated with a port cost which contributes the topology of the network The lower the number in this field the higher chance to become the designated port ...

Страница 77: ...transferred available link resources shared by all users decrease so when the CPU finishes the job faster increased shared link resources are made available for other packet transfers making file transfer faster It is important to query the CPU for performance information occasionally This allows you to determine when performance issues arise over time and indicates where you can make changes to i...

Страница 78: ...nicate with 10BaseT Network stations The information on this page is automatically updated every ten seconds This section describes the 10BASET PORT STATISTICS PAGE This page also contains a Clear Counters button Clicking this button resets all counters on this page to zero The following sections describe the fields on this page Figure 40 10BaseT Port Statistics Page ...

Страница 79: ... counts and stores the total number of packets that the remote 10BaseT stations send to the CPU This number represents all received packets Total Error Packets This field displays the total number of Ethernet errors accumulated CRC Error Packets This field displays the total number of frames that reported a bad cyclical redundancy check Collision Error Packets This field displays the number of pac...

Страница 80: ...999 RadioLAN Inc Overrun Packets This field totals the number of frames that exceeded Ethernet maximum size specifications Runt Packets This field totals the number of frames that were smaller than Ethernet minimum size specifications ...

Страница 81: ...ommunicate with the distant CPU The information on this page is automatically updated every ten seconds This section describes the RADIO PORT STATISTICS PAGE The page has two major sections Packet Transmission Packet Reception The screen also contains a Clear Counters button Clicking this button resets all counters on this page to zero Figure 41 Radio Port Statistics Page ...

Страница 82: ...mes packets are transmitted more rapidly than at other times The maximum transmit rate for 64 bit frames is approximately 14 600fps frames per second The Average Transmit Rate field indicates the average number of packets sent each second Typical networks range from 100 to 5000 frames transmitted each second and will vary with time If you observe the rate consistently higher than 10 000 fps you ma...

Страница 83: ...enna You may also need to remove objects that block the line of site of the two directional antennas to improve signal quality Packet Reception The Packet Reception section indicates the CPU s ability to receive packets from the distant CPU Total Packets Received The Total Packets Received field counts and stores the total number of packets that the remote CPU sends to the local CPU This number re...

Страница 84: ... Parameters on page 39 you can use methods described in this section You can upgrade system software three ways Using a local file on your PC see Figure 42 Using a TFTP server see Figure 43 on page 75 Using XMODEM through the CPU local port The SYSTEM CONFIGURATION SOFTWARE UPGRADE PAGE allows you to download a new configuration to the CPU On this page type in the name of the file that you want to...

Страница 85: ...ng this radio button allows you to select a file on your local hard drive When you choose this radio button the File to Upload field appears allowing you to enter the name of the file to upload System Software Filename This field allows you to enter the file name of the operating system file that you want to download If you do not know where the file is located click the Browse button to display a...

Страница 86: ...dress field appears Enter the IP Address for the server where you will obtain the upgrade file Download Button Upload causes the CPU to retrieve the specified software file from the specified location The downloaded file is written into system memory as the CPU receives it As the CPU reboots after downloading the new operating system runs immediately ...

Страница 87: ...to save your changes or to reject changes you have made to allow the CPU to continue operating as before you accessed the CPU Web Site This page contains the following objects Save All Changes and Reset radio button Reload Last Saved Configuration radio button Reset Configuration To Factory Default radio button After making your choice click the OK button to cause the CPU to act Figure 44 Configur...

Страница 88: ...ntries The CPU automatically resets and uses new configuration settings Reload Last Saved Configuration This radio button causes all changes that you have made to revert back to their previous settings Reset Configuration to Factory Default This radio button causes the CPU to change all configuration items to their factory default settings These settings become permanent when saved ...

Страница 89: ...rsion of the CPU s operating system you must reset the CPU One method of resetting the CPU is to remove power from the unit for approximately five seconds Another method for resetting the CPU is found on the RESET PAGE To access the RESET PAGE select the Reset menu item Click the OK button to reset the CPU Figure 45 Reset Page ...

Страница 90: ... BridgeLINK Manager makes it easy to keep information on hand recording configuration information that was last saved see Saving or Rejecting Configuration Setting Changes on page 77 To retrieve system information open the SYSTEM STATUS SYSTEM INFORMATION PAGE then print it on your local printer File the resulting printout in a safe place Figure 46 System Information Page ...

Страница 91: ...ess noted on the bottom of the CPU 10BaseT Port MAC Address This information is loaded into the CPU from the factory The information in this field should match the MAC Address noted on the bottom of the CPU Subnet ID This information was entered on the RADIO PORT PARAMETERS PAGE IP Address States the IP Address entered on the IP PARAMETERS PAGE or DHCP assigned IP Address if DHCP support is enable...

Страница 92: ...tem Software File Name States the system software file name Hardware Revision States the hardware version of the CPU System Serial Number States the CPU s serial number System Up Time States the day hours and minutes that the system has been in operation ...

Страница 93: ...d password authentication messages The screen displays a list with the following columns Item Displays the item number on the list As new events appear the CPU issues a new number Task Lists the task that initiated the message Time Sec Time in seconds since the CPU was restarted Error Message Lists a verbose error name Figure 47 System Log Page ...

Страница 94: ... VT 100 terminal a PC using terminal software or dial up modem to the CPU as an alternative method of managing the CPU Using this method you can communicate with the CPU to make configuration changes or to interrogate the CPU for performance statistics Serial Port Figure 48 Connecting the VT 100 Terminal to the CPU ...

Страница 95: ... a special interface cable that connects between the serial port jack and a DB9F serial connector The pin outs for this cable are shown in Table 1 Signal Description DB 9F RJ11 Signal Description Ground 2 1 Ground Serial Out from computer 3 2 Rx In Serial In to computer 5 4 Tx out Table 1 Serial Port Adapter Cable Pin outs ...

Страница 96: ... then accept all session changes by accessing the SYSTEM CONFIGURATION CONFIGURATION CHANGES PAGE This causes the CPU to store configuration changes Hot Keys Throughout the program you will find hot keys These specific keyboard combinations allow you to move about the program easily and quickly Each screen contains a specific grouping of hot keys Options available through the program are Enter Mak...

Страница 97: ...on the screen Serial Number Enter User Name Enter Password If the password is not set the following message will appear at the bottom of the screen Password is not set hit any key to proceed If this message appears press any key to enter the program then set the access security features by going immediately to the SYSTEM CONFIGURATION ACCESS SECURITY PAGE Figure 49 Logon Menu ...

Страница 98: ... programmed into the SYSTEM CONFIGURATION ACCESS SECURITY PAGE are allowed access to the program Enter Password The Enter Password field allows you to enter your user password for access to configuration and diagnostic screens Enter your password here and then press Enter to enter the program If the user name and password match those stored in the ACCESS SECURITY PAGE you will be allowed to view a...

Страница 99: ... items appear Node Discovery Displays the signal quality of the wireless link System Features Takes you to the SYSTEM FEATURES menu where you can add enhanced features like Data Encryption See SYSTEM FEATURES MENU on page 99 for more information about this selection System Features Main Menu Node Discovery System Configuration System Statistics System Status Antenna Aiming Figure 50 The Main Menu ...

Страница 100: ...n page 103 for more information about this selection System Status Allows you to interrogate the CPU for current system performance information See SYSTEM STATUS MENU on page 107 for more information about this selection Diagnostics Allows you to fine tune the alignment between directional antennas See DIAGNOSTICS MENU on page 106 for more information about this selection Radio Port Statistics 10B...

Страница 101: ... can identify the system name the person who is responsible for the CPU and the location where the CPU is installed This information is useful when you access the CPU from remote locations using SNMP and HTML communication See ADMINISTRATION PARAMETERS MENU on page 95 for more information about this selection IP Parameters System Configuration Administration Parameters Port Parameters SNMP Paramet...

Страница 102: ...an set up options for Spanning Tree Parameters See SPANNING TREE PARAMETERS MENU on page 102 for more information about this selection Port Parameters Selecting this item displays the PORT PARAMETERS menu from which you can choose to set up 10BaseT or radio port wireless link options See 10BASET AND RADIO PORT PARAMETERS MENU on page 100 for more information about this selection Radio Port Paramet...

Страница 103: ...grade Parameters Selecting this item displays the SOFTWARE UPGRADE menu at which you can specify the IP Address of a TFTP server where you can download software updates to the CPU See SOFTWARE UPGRADE MENU on page 104 for more information about this selection Port Parameters Configure SNMP Hosts SNMP Managing Hosts Main Menu System Configuration SNMP Parameters Figure 55 SNMP Parameters Menus ...

Страница 104: ...ges or revert back to the last saved settings See SYSTEM CONFIGURATION CONFIGURATION CHANGES MENU on page 105 for more information about this selection System Operation Mode This selection allows you to set the operational characteristics of the CPU Here you can configure the CPU as an access point or a 10BaseT Network interface card translator to wireless networking See SYSTEM OPERATION MODE on p...

Страница 105: ... Menu Item Refer to Notes SYSTEM CONFIGURATION ACCESS SECURITY MENU Setting Up Security Features on page 35 Allows you to set menu logon names and passwords for access to menus User Logon Name User Logon Name Fields on page 35 Enter from 1 to 12 letters or numbers User Password The User Password and Retype Password Fields on page 35 Enter from 1 to 12 letters or numbers ADMINISTRATION PARAMETERS M...

Страница 106: ...P PARAMETERS IP Parameters on page 39 Allows you to set network addresses IP Address IP Address on page 40 Identifies the CPU on a TCP IP network The first segment ranges from 0 to 223 the last three segments range from 0 to 255 for example 221 142 15 200 Subnet Mask Subnet Mask on page 40 Determines the Subnet Mask Address for the CPU The first segment ranges from 0 to 223 the last three segments...

Страница 107: ...page 41 Enables and disables DHCP support and allows you to connect to a DHCP Server By default this option is selected DHCP Server IP Address DHCP Server IP Address on page 42 The first segment ranges from 0 to 223 the last three segments range from 0 to 255 for example 223 142 15 200 SNMP PARAMETERS MENU SNMP Parameters on page 43 Contains fields that specify the SNMP management and notification...

Страница 108: ...U Configuring SNMP Managers for the CPU on page 45 Allows you to add up to five SNMP Manager stations that can control interrogate and receive Traps from the CPU Managing Host IP Address Configuring SNMP Managers for the CPU on page 45 The first segment ranges from 0 to 223 the last three segments range from 0 to 255 for example 220 142 15 200 Managing Host Access Right Setting Access Rights for S...

Страница 109: ...stations SYSTEM OPERATION MODE Setting the CPU s Mode of Operation on page 47 Allows you to set up the method that you will use for operating the CPU Point to Point Mode Point to Point Mode on page 47 Sets the CPU for use in Campus BridgeLINK applications SYSTEM FEATURES MENU Software Upgrade Key Securing the CPU with Data Encryption on page 48 Allows you to enter a key to add an enhanced feature ...

Страница 110: ...ers menus for the Radio and 10BaseT ports 10BaseT Port Parameters Menu 10BaseT Port Parameters on page 51 Displays the 10BASET PORT PARAMETERS menu Radio Port Parameters Menu Radio Port Parameters on page 54 Displays the RADIO PORT PARAMETERS menu 10BASET AND RADIO PORT PARAMETERS MENU 10BaseT Port Parameters on page 51 or Radio Port Parameters on page 54 Displays the port s name allows you to ena...

Страница 111: ...page 52 This item leads to the EDIT MAC FILTERS menu Block IP Packets Block IP Packets on page 52 Choose Yes or No Block IPX Packets Block IPX Packets on page 53 Block NetBEUI Packets Block NetBEUI Packets on page 53 Choose Yes or No Block NetBIOS Packets Block NetBIOS Packets on page 53 Choose Yes or No 10BASET AND RADIO MAC FILTER LIST Managing Packet Flow Through the CPU on page 57 MAC FILTERS ...

Страница 112: ...de is sending or receiving packets Accept or Reject The Packet When Satisfied Accept Reject on page 60 Allows you to allow or disallow transmission of the packet depending upon the entry in the field List all Filters Configured Adding MAC Filters on page 60 Selecting this item displays the filter list SPANNING TREE PARAMETERS MENU Spanning Tree Parameters on page 62 Allows you to set up bridging c...

Страница 113: ...ty 0 255 on page 66 Enter a number from 0 to 255 Port Path Cost 1 65 535 Port Path Cost 1 65 535 on page 66 Enter a number from 1 to 65 535 SYSTEM STATISTICS MENU Interrogating the System for Performance Information on page 67 This menu leads you to port statistics menus for the 10BaseT and radio port 10BaseT Port Statistics Checking 10BaseT Port Statistics on page 68 This item displays the 10BASE...

Страница 114: ...ss Link Statistics on page 71 Allows you to interrogate the system remotely about current traffic statistics on the radio port SOFTWARE UPGRADE MENU Upgrading System Software on page 74 Allows you to download a new configuration to the CPU Download Mode Upgrading System Software on page 74 Allows you to choose the Download mode Choices are serial xmodem and TFTP TFTP Server IP Address TFTP Server ...

Страница 115: ...cified software file from the specified TFTP server IP Address or from the serial port SYSTEM CONFIGURATION CONFIGURATION CHANGES MENU Saving or Rejecting Configuration Setting Changes on page 77 Allows you to save your changes or to reject changes you have made which allows the CPU to continue operating as before you accessed this screen Save All Configuration Changes Save All Changes and Reset o...

Страница 116: ...Aiming the Directional Antennas on page 33 Allows you to fine tune the alignment of two directional antennas Ping Destination Selecting the Distant CPU s Address on page 34 Allows you to enter the Explicit Address for the Distant CPU Ping Frame Size Setting the Frame Size on page 34 Sets frame size transferred during the PING test Estimated Distance Setting the Estimated Distance between Antennas ...

Страница 117: ...d Stopping the Test on page 34 Select Start to begin or Stop to end the test SYSTEM STATUS MENU Recording Important System Information on page 80 Leads you to SYSTEM INFORMATION and SYSTEM LOG System Information Recording Important System Information on page 80 Displays the System Information menu at which you can collect version contact and other information about the CPU System Log Viewing the S...

Страница 118: ...ss the link If any of these do not operate as described it may indicate a problem For more information about indicators see LED Indicator on page 3 Contact your distributor for assistance If you cannot reach your distributor or purchased the units directly from RadioLAN contact RadioLAN Support Problem No traffic for anyone Using either the VT100 or Web management tools check that the configuratio...

Страница 119: ...ruction or tree growth has occurred blocking the directional antenna link If the problem persists and you have access to another CRM try replacing the CRM If this makes a difference it is possible the CRM may have become damaged reducing its effectiveness Contact your distributor for assistance Problem Retransmissions are excessive Verify that you selected and saved the correct Estimated Distance ...

Страница 120: ... agent can also take instructions from a remote manager to make changes to objects in the MIB For example the manager might instruct the agent to change the system date and time Client Station A wireless 10Mbps computer that receives and originates Ethernet data Client stations may exchange data directly and or send to other hard wired network devices by using an access point service DHCP Server A...

Страница 121: ...example 222 8 44 155 The numbers in the address indicate the domain of the site and the user of that site Such an address can be assigned by a private network administrator for a private network but for use on a larger scale one should obtain an address from the InterNIC Registration Service which assigns a different address to each user MAC Address Media Access Control Address Basic numerical add...

Страница 122: ...er A program used for verifying testing network connectivity between two or more computers by transmitting a special diagnostic packet to those stations on the network It forces the receiving station to send a reply indicating that the packet reached its destination It obtains information about the connection by determining the amount of time for packet delivery and station response Routing The pa...

Страница 123: ...e when the port is connected to another powered 10BaseT port whose signaling meets the requirements for an IEEE 802 3i 10BaseT device for example valid link test pulses are detected on the receive pair The ACT LED green is active when receive activity is detected or during a packet transmission Power LED The Power LED green is active when power is provided to the unit Fault LED The fault LED amber...

Страница 124: ...quires a crossover function Generally 10BaseT ports on an adapter card are configured as MDI and 10BaseT ports on a repeater hub are configured as MDI X The CPU allows you to configure its 10BaseT port as an MDI switch out position or MDI X switch in position port The abbreviation MDI stands for Media Dependent Interface and is specified by the IEEE 802 3i 10BaseT standard to be the electrical and...

Страница 125: ... pin out is described in the following table and figure Pin Signal MDI configuration Signal MDI X configuration 1 TX Transmit to UTP RX Receive from UTP 2 TX Transmit to UTP RX Receive from UTP 3 RX Receive from UTP TX Transmit to UTP 4 No connection No connection 5 No connection No connection 6 RX Receive from UTP TX Transmit to UTP 7 No connection No connection 8 No connection No connection 8 7 ...

Страница 126: ... You can connect the serial port to a DB9 jack using a cable with a four pin modular connector on one end and a DB9F connector on the other The pin out is described in the following table and figure Signal Description DB 9F RJ11 Signal Description Ground 2 1 Ground Serial Out from computer 3 2 Rx In Serial In to computer 5 4 Tx out 1 2 3 4 5 6 ...

Страница 127: ...b s Manchester encoded IEEE 802 3 CSMA CD RadioLAN 10 Pulse Modulated CSMA CA Standards Support IEEE 802 3i Type 10BaseT Electrical Specifications Domestic International Input Power 18 Watts 18 Watts AC Line Frequency 60 Hz 50 60 Hz Input Voltage 110VAC 100 240VAC Volt Amperes Rating 0 5A 115VAC 0 3A 230VAC ...

Страница 128: ...x 4 1875 x 13 125 Weight 22 3 oz 632g Environmental Specifications Operating Temperature 5 C to 40 C Storage Temperature 25 C to 70C Operating Humidity 85 max relative humidity non condensing Storage Humidity 95 max relative humidity non condensing Operating Attitude 10 000 ft 3 000m maximum ...

Страница 129: ...etic Emissions Meets requirement of FCC Part 15 Subparts A and B Class A EN55 022 CISPR 22 1985 Class A General License VDE 0871 Class A AmtsblVfg No 243 1991 and Vfg 46 1992 VCCI Class 1 ITE Safety Agency Approvals UL listed ULC listed CSA certified TUV licensed ...

Страница 130: ...lick Technical Support 3 You can reach RadioLAN Technical Support directly by dialing Toll free 888 2 RADIOLAN 888 272 3465 or 408 616 6333 4 Alternatively you can reach our technical staff at the following e mail address support radiolan com Please have the following information available and ready Your name address and phone number The serial number of the RadioLAN part in question A description...

Страница 131: ...ers menu 100 10BaseT Port Parameters Page 51 10BaseT Port Statistics command 103 10BaseT Port Statistics menu 103 10BaseT Port Statistics Page 68 A AC line frequency 117 Accept Packet command 102 access rights remote stations 44 SNMP Managers 46 Access Security menu 95 Access Security Page 35 ACT LED 5 activity information 113 Add this Managing Host command 98 adding user names and passwords 35 ad...

Страница 132: ... assigning IP Address default gateway 40 to CPU 12 14 to SNMP agent 40 attaching to CPU 29 authentication 27 43 enabling disabling 44 B baud rates 56 Best command 106 Block IP Packets command 101 Block IPX Packets command 101 Block MAC Packets command 100 Block NetBEUI Packets command 101 Block NetBIOS Packets command 101 bridge 62 108 configuring 63 port priority setting 66 transmitting frames 65...

Страница 133: ...anging 28 77 79 preventing SNMP Manager from 46 DHCP Server 41 hard wired bridge 63 local connections 5 network specific filters 51 54 reverting to previously saved 78 saving changes 78 SNMP agent 36 45 upgrades and 74 VT100 terminals 56 Configuration Changes menu 105 Configuration Changes Page 28 77 Configure Managing Hosts command 97 Configure SNMP Host Page 45 Configuring SNMP Host menu 98 conn...

Страница 134: ...anagement prerequisites 12 temporary connections 13 CRC error checking 69 CRM 7 attaching antenna cable 17 mounting 18 CRM port 6 crossover function 114 customer assistance 120 cyclical redundancy checks 69 D D connector 6 Data Encryption 26 See also security enabling 48 Data Encryption menu 94 99 Data Encryption Page 48 data filters 51 54 adding 60 caution for setting 57 changing MAC 61 Data Link...

Страница 135: ...guration Protocol See DHCP Server E Edit MAC Filters command 100 electrical connections 8 electrical specifications 117 electromagnetic emissions 119 Enable Authentication Trap command 97 Enable Encryption command 99 Enable System Log Receiving command 98 Enable Trap Receiving command 98 encryption 26 See also security enabling 48 Encryption Key command 99 encryption keys 48 entering user name and...

Страница 136: ...e command 106 frames resizing 32 frequency iii 117 G gateway default IP Address 40 getting default 81 geographic locations system IDs 38 ground 20 H hardware version information 82 hard wired external devices 5 hard wired link 62 108 configuring 63 transmitting frames 65 Hello Time command 102 hosts 41 configuring as SNMP agent 45 subnet mask and 40 hot keys 86 hub 5 CPU connections 19 I I O conne...

Страница 137: ... filters 52 IP Parameters menu 92 96 IP Parameters Page 39 IPX filters 53 isolated networks 40 K keyboard shortcuts 86 L LAN Seenetworks LAN Manager servers 53 LED indicators 3 5 7 troubleshooting 108 line frequency 117 List All Filters Configured command 102 local area networks See networks Local Management menu 86 local port 5 IP Address assignment and 13 location requirements 2 10 11 15 directi...

Страница 138: ... connections 53 mode of operation 47 modems 26 mounting assemblies 21 mounting bracket 6 mounting height 22 N N connector 7 NetBEUI filters 53 NetBIOS filters 53 Network Basic Input Output System See NetBIOS network browser SeeWeb browser network devices 41 network hub 5 CPU connections 19 networks 49 See also specific type wireless stations addressing 40 administering remote stations 37 attaching...

Страница 139: ...igning to remote stations 44 entering 30 88 not set 87 Perform Download command 105 performance 57 67 performance information 26 getting 67 physical specifications 118 pin assignment switch 4 pin outs I O connector 115 serial connector 85 Point to Point command 99 Point to Point Mode 47 Port Name command 100 Port Parameters menu 92 99 10BaseT Port options 51 Console Port options 56 Radio Port opti...

Страница 140: ...oLAN MAC Address assignment 58 RadioLAN Technical Support 120 Read Community command 97 rebooting system 76 79 reception ii 24 testing 34 registered IP Addresses 40 Reject Packet command 102 Reload All Previous Configurations command 105 reloading previous configurations 78 remote stations 26 28 49 administration 37 assigning access rights 44 data transfer performance 69 72 enabling disabling data...

Страница 141: ...rotocol See SNMP SNMP agent 26 assigning IP Address 40 configuring 36 45 creating IDs for 38 remote traps and 43 SNMP Manager 26 Administration Parameters options 37 IP Parameters options 39 notification parameters 43 setting access rights for 46 SNMP Managing Hosts menu 98 SNMP Parameters menu 93 97 SNMP Parameters Page 43 Software Upgrade menu 104 Software Upgrade Page 74 Source Address Filterin...

Страница 142: ...s Page 77 Configure SNMP Host Page 45 Console Parameters Page 56 Data Encryption Page 48 IP Parameters Page 39 Radio Port Parameters Page 54 SNMP Parameters Page 43 Software Upgrade Page 74 Spanning Tree Parameters Page 62 63 System Operations Mode Page 47 system contact 38 System Contact command 96 System Features menu 99 system indicators 3 5 7 troubleshooting 108 system information 80 83 System...

Страница 143: ...TP Server upgrades 75 transmit rates 72 transmit receive switch 4 transmitting large files 67 Traps 43 sending receiving 46 troubleshooting tips 108 U unauthorized users 26 27 upgrades 74 User Authentication message 43 enabling 44 User Logon Name command 95 user names adding 35 entering 30 88 User Password command 95 V version getting 81 82 voltage 117 VT100 terminal setting up 56 VT 100 terminal ...

Страница 144: ... wireless networks See wireless stations wireless stations 49 57 bridging to hard wired 62 108 getting performance information 26 72 identifying 55 optimizing performance 52 67 protecting from unauthorized users 26 27 troubleshooting tips 108 Worst command 106 Write Community command 97 ...

Страница 145: ...890 007 Rev A 01 28 99 Page 135 1999 RadioLAN Inc Notes ...

Страница 146: ...RadioLAN 455 De Guigne Drive Sunnyvale CA 94086 Phone 408 616 6300 Fax 408 524 0600 ...

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