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DATA SHEETS

Linux

In a terminal window, enter the following command :

–

$ /bin/ifconfig

–

The MAC address (Hwaddr) format is "00 :00 :B4 :C3 :9A :C9"

MAC OS X

In a terminal window, enter the following command :

–

[oxance :~] ifconfig

–

The MAC address (ether) format is "00 :03 :93 :C9 :74 :aa"

Standalone Ethernet Device

The MAC address of a standalone Ethernet device (router, printer, controller, video/webcam,
etc.)is usually printed on the device label. If not, contact your dealer to obtain the MAC address
of your device.

Содержание PLA200

Страница 1: ...th all operating systems An SNMP V1 V2c and V3 agent with trap control ensures compatibility with other network administrators A Syslog daemon logs system events An integrated network performance utility displays the powerline network performance in real time Upgradable rmware in the PLA200 can be updated via the network Enhanced Security Level MAC address ltering means you can eliminate the Netwo...

Страница 2: ...work quality 11 4 7 DES 56 bit and AES 128 bit Security Protocols 11 4 8 Configuration by HTTP Server 12 4 9 SNMP V1 V2 and V3 Agent with Trap Control 12 4 10Locating a Remote PLA200 12 5 Product Presentation 13 5 1 Package Contents 13 5 2 Required Configuration 13 5 3 Description of the Device 14 5 3 1 Lights 14 5 4 Features and Recommendations 15 6 Installing the PLA200 16 7 Configuring the IP a...

Страница 3: ...how PLA bridges are used 58 9 3 1 A Powerline Network with 15 PLA200s and 15 PL100s 58 9 3 2 A Powerline Network composed of 21 PLA200s 59 9 3 3 A Powerline Network composed of 75 PL100s 60 9 3 4 A Powerline Network composed of 75 PLA200s 61 9 3 5 A Powerline Network composed of 21 PLA200s and 30 PL100s 62 10 Specifications 63 11 Troubleshooting 64 12 Mounting Kit 65 13 Data Sheets 66 13 1How do I...

Страница 4: ...device and clean it with a damp cloth Never use this device near a source of water for example a bathtub sink washing machine a damp cellar or near a swimming pool The device should be operated only from the type of power source indicated on the device s electrical ratings label Do not overload wall outlets and extension cords as this can result in a risk of fire or electrical shock Do not attempt...

Страница 5: ...ystem transmits a signal on several frequencies at once Even if only one weak signal passes the receiver can reconstruct the message regardless of any obstacles encountered on the other frequencies The protocol used is CSMA CA Carrier Sense Multiple Access with Collision Avoidance similar to 802 11 as well as priority classes and latency control The frequency bandwidths range from 4 3 Mhz to 20 9 ...

Страница 6: ...the computers in your company 2 and 5 Some rooms in your company are not wired to the Ethernet network Connect your computers to the powerline network via the PLA200 units and access all network applications shared files and the Internet 3 You need to connect an Ethernet network room to the other floors in your company Plug in a PLA200 to the Hub Switch and access all of the other PLA200s computer...

Страница 7: ...tation free internet access 2 You have many rooms that are not wired or do not need Ethernet access at all times As the need arises plug in the PLA200 to get an instant access point hotel rooms offices training rooms etc 3 You want to control a location or monitor a parking lot or sensitive are at a lower cost Connect the PLA200 to an Ethernet enabled video camera and you can conduct your video su...

Страница 8: ...PLA 200 to your cash register bar code reader or payment system and you have an instant network with no special wiring 2 You want to control industrial equipment via the Ethernet network control lers sensors maintenance systems access control etc Connect the PLA200 to your unit and place it where you want without wiring or rewi ring ...

Страница 9: ...between A and C is direct there is no interference At 11 30 AM Electrical interference between A and C results in lower performance The data is automatically relayed via B in order to optimise transmission rates At 12 15 AM The electrical interference is resolved and direct communication is once again the best choice so the relay via B is eliminated ...

Страница 10: ...er PLA200 B is automatically used as a relay to create a connection between A and C 4 3 MAC Address Filtering You can restrict data traffic on the Ethernet network The principle is similar to a firewall in which the data are filtered between a source and a destination Example All of the rooms in a hotel have internet access but for security reasons access between the rooms is impossible ...

Страница 11: ...sent and re ceived by the PLA200s The counters are saved to flash memory and can be reset only by the administrator Just plugging in or unplugging the PLA200 does not reset the counters 4 6 Complete information about the status of the powerline net work best routes noise network quality The powerline network status is analysed in real time Colour graphs show information on quality and interference...

Страница 12: ... web browser such as Internet Explorer 6 1 or Mozilla 1_4 You can also setup and manage your Powerline Network with a PocketPC Computer PocketPC 4 9 SNMP V1 V2 and V3 Agent with Trap Control This protocol allows you to manage the PLA200s using management utilities such as HP OpenView etc 4 10 Locating a Remote PLA200 It is possible to locate the remote device by activating the flashing Locate ligh...

Страница 13: ...ct your dealer 5 2 Required Configuration Any Ethernet enabled device computer controller cash register card reader video webcam router terminal server etc To configure and set up a PLA200 1 computer with network card and TCP IC protocol configured 1 web browser2 Internet Explorer 6 0 28 minimum or Mozilla 2 The web browsers are included on the Oxance CD ROM ...

Страница 14: ...Link Orange The PLA200 indicates the presence of another HomePlug device on the pow erline network PLA activity Flashing Orange The PLA200 is receiving or transmitting data over the powerline net work Ethernet Link Green The PLA200 is connected to an Ethernet enabled device Ethernet activity Flashing green The PLA200 is receiving or transmitting data over the Ethernet network Reset Reset Factory C...

Страница 15: ...devices Each group is linked to the others by PLA Bridges see explanation and configuration on page 51 Whenever possible use one PLA 200 adaptor per wall outlet If this is not possible use a single to double T shaped adaptor and plug in your PLA200 and your power strip You must use the 30 cm power cord provided since a longer cord will affect the powerline network performance Never plug the PLA200...

Страница 16: ...ng analysis is done using a common web browser Plug in the PLA Ethernet adaptor to an electrical outlet Connect the Ethernet cable to the PLA200 and to the Ethernet interface on your device or to your Ethernet Hub Switch The auto MDI MDIX function simplifies the installation process in that there is no need to worry about what type of cable to use straight through or crossover The port adjusts aut...

Страница 17: ...ng network Automatic IP address auto_ip Auto_ip mode assigns a network IP address based on the MAC address Find the MAC address of your PLA200 printed on the label star ting with 00 0c 3a This MAC address must be linked on the computer to the selected free IP address add a static entry in the ARP table C arp s IP adress MAC adress The ICMP protocol ping is then used to supply the IP address to the...

Страница 18: ...mputer 2 Determine which free IP address you want to assign to the PLA200 for example 192 168 1 200 3 Identify the MAC address of the PLA200 for example 00 0C 3A 01 01 01 4 Open the command prompt Start Run Cmd 5 Add a static entry in the ARP table of your Windows 2000 C arp s 192 168 1 200 00 0C 3A 01 01 01 6 Run the ping command on the free IP address C ping 192 168 1 200 7 As of the second requ...

Страница 19: ...A200 to make your network secure Browser password This password authenticates you on the PLA s web server This password is also used as an authentication key and encryption key for SNMPv3 re quests Once the password has been modified authentication is needed to access the Web server The user login is admin in lower case PLC password This is the encryption key used by all of the PLAs present on the...

Страница 20: ...ut the current page at any time by clicking on the question mark Click on the flag to switch the configuration interface to English To update all the fields you have to close and re open you browser or refresh the page by clicking on refresh or update in your browser ...

Страница 21: ...Save Config The settings of all the PLA200s are saved to flash memory PLA SELECTION pages with orange background The following menus are directly related to the selected PLA200 Access Point This is the name of the access point PLA which connects to your computer via Ethernet Select PLA200 to configure The PLA are listed in alphabetical order and the access point is automatically selected Setup Vie...

Страница 22: ...al characters 32 characters maximum address this is the MAC Media Access Control address of the PLA200 6 byte hex coded The first three characters are reserved for the manufacturer 00 0c 3a for Oxance The next three are digits from 0 to 9 or letters from A to F This alphanumeric string is unique and is used to identify the PLA200 type the type of PLA PLA200 PLA220 etc version the version of the PL...

Страница 23: ...8 GRAPHIC CONFIGURATION 23 To modify and personalize the fields select NAME EDITION NAME EDITION SEGMENT EDITION3 3 Segment edition should be used only if you have a PLA Bridge see page 51 ...

Страница 24: ...s This mode is used in two cases R on a white background The quality of the line was determined to be very bad but the transmission is still possible R on a grey background The quality of the line could not be determined but the transmis sion is still possible If the devices cannot communicate no value is displayed Note This chart shows the direct quality between each PLA This quality should be co...

Страница 25: ...d PLA2 are mediocre It seems that PLA1 and PLA2 are too far apart on the power system to establish a good quality communication However the protocol will optimise the communication by us ing PLA4 as a relay PLA3 cannot communicate directly with PLA2 and PLA4 too far apart so it must use a relay PLA1 This interpretation can be checked by viewing the routing table for each PLA200 PLA Selection route...

Страница 26: ...icate optimum quality whereas a large discrepancy indicates electrical interference This chart shows a problem on PLA1 and questions about PLA2 By clicking on asym metry you highlight the data rate differences between the PLA200s shown on a red colour scale The red on the PLA1 line confirms the first diagnosis PLA1 is experiencing electrical interference However PLA2 is not involved in the problem...

Страница 27: ... Unit Select the unit for representing the values charts routes etc raw Powerline estimate between 1 and 14 Mbps tcp TCP estimate between 1 and 5 8 Mbps internal Internal value between 1 and 253 Percentage of bandwidth Data encryption AES 128 bits By default data transmitted over the powerline network are DES 56 bit encrypted You can increase the level of security by using AES 128 bit encryption t...

Страница 28: ...ually change the priority see page 45 PLA selection Setup Priority manage ment 1 low priority 2 3 medium priority 4 5 high priority 3 Fairness setup a priority management in relation with throughput To improve low data transfer web email compared to high data transfer ftp peer to peer you can setup 2 threshold to determine 3 priority classes A low and high threshlod allows to setup the priority le...

Страница 29: ... key The next time you open your browser or if you refresh the current session you will be asked for the PLC encryption key to access the device BROWSER ADMIN PASSWORD This is the password used to connect to the PLA s HTTP administration server It is also used as an authentication and encryption key for SNMPv3 administration requests The user name to setup the PLA is admin lower case and password ...

Страница 30: ...on pages you can dis able the auto_ip mode On the host computer you must link the PLA s MAC address with a free IP address arp s IP_PLA aa bb cc dd ee ff UNIX MAC arp s IP_PLA aa bb cc dd ee ff WINDOWS Example arp s 192 168 1 251 00 0c 3a 83 00 61 F You must have administrator privileges on the computer and be able to add an ARP entry otherwise you will receive an error message such as The ARP ent...

Страница 31: ...p to bottom until a rule matching the Ethernet frame is encountered If no matching rules are found the system reverts to default behaviour F CAUTION As indicated above the PLA200 looks for the first rule that matches the frame The order in which the rules are entered is very important Access to the PLA200 can be interrupted if the rules are entered in the wrong order After the rules are entered an...

Страница 32: ...e computer router vi deo webcam other Ethernet device Filtering policy bandwidth limit and bytes accounting Filtering Pass to set up a pass rule Stop to set up a block rule Limit Limit the bandwith in kbits sec acct Count the number of kbytes received or sent Bandwith The bandwidth is limited from the destination to the source in kbit sec The bandwidth is limited from the source to the destination...

Страница 33: ...y level required 2 Take an inventory of the devices and PLA200s 3 Give specific names to the PLA200s 4 Create a network diagram computers PLA200 hub router etc 5 Chose the best default behaviour to obtain a minimum number of rules 6 Enter the rules validate and test 4 The hotel has most of the network architectures that are encountered in businesses The computer networking needs vary both in terms...

Страница 34: ... each user from possible intrusion network neigh bourhood access to shared resources etc 1 The PLA Router can reach all of the devices present on the powerline network Due to the nature of a network this rule is two way which means All of the devices present on the powerline network have access to the PLA Router and therefore to the router F Remember to set the default behaviour to block ...

Страница 35: ...ersa The data rate of Room 1 is limited to 100 kbits s incoming router to room and 25 kbits s outgoing room to router 2 The PLA Router can reach the PLA Room 3 and vice versa with no bandwidth limitation The counter is activated to track the number of kbytes transferred F Remember to set the default behaviour to block Rule 2 tells the PLA to count the kbytes transferred between the router and room...

Страница 36: ...mmunication with one another The computers in the administrative network Reception Secretary s Office Ac counting must be able to communicate with one another 1 The PLA Router can reach all of the devices present on the powerline network and vice versa 2 The PLA Reception can reach the PLA Secretary s office and vice versa 3 The PLA Reception can reach the PLA Accounting and vice versa 4 The PLA S...

Страница 37: ...Accounting computer in the administrative network whose MAC address is 00 00 b4 c5 9b 0c The computers in the rooms must not be able to communication with one another 1 The PLA Router cannot not access the Accounting computer whose MAC address5 is 00 00 b4 c5 9b 0c and vice versa 2 The PLA Router can reach all of the other devices present on the powerline network and vice versa All of the computer...

Страница 38: ...NFIGURATION 38 8 2 5 Global Network Test Test allows to calculate the bandwith Mb s beetwen the Access point PLA and another remote PLA A FTP transfer is done upload and download from Access point to the remote PLA ...

Страница 39: ...hically control the quality fluctuations beetwen 2 PLA along the time You must setup the source the destination PLA and the refresh period Example A PLA was intentionnaly connected into a surge protector When this surge protector is off you can immediately see the bandwith improvement ...

Страница 40: ...N 40 8 2 7 Global Network Save Config The information entered via the web interface is stored in RAM memory on all of the PLA200s To make sure the information is not lost even when there is a power outage remember to save it ...

Страница 41: ...lphabetical order By default The access point PLA is selected Even while connected to the Ethernet network through this PLA200 you can access local information from another PLA200 via the powerline network Under PLA Selection you can view and change the settings only of the PLA selected ...

Страница 42: ...ess this is the MAC Media Access Control address of the PLA200 6 byte hex coded The first three characters are reserved for the manufacturer 00 0c 3a for Ox ance The next three are digits from 0 to 9 or letters from A to F This alphanumeric string is unique and is used to identify the PLA200 access this field indicates whether you are accessing the PLA200 directly local or via the powerline networ...

Страница 43: ...hysical network into several logical networks by assigning a different encryption key to each logical network It is useful to separate the users of physical network into two or more logical networks for example in a school students teachers or a hotel rooms administrative How to create logical networks 1 Identify all of the PLA200s belonging to the same logical network 2 Select a PLA200 3 Assign i...

Страница 44: ...network settings HTTP port Here you can change the TCP access port to the HTTP server SNMP The PLA network can be administered using the SNMP protocol Enable SNMP agent To use this function you must enable the SNMP of the PLA that is on the same Ethernet network as the computer acting as SNMP host Only one agent is needed to administer a PLA network It may be useful to enable a second agent if you...

Страница 45: ... default If an Ethernet frame contains a VLAN tag then the tag priority determine the priority of the frame when sent on the powerline 2 Fixed fix the priority for frame transmission on the powerline 1 low priority 2 3 medium priority 4 5 high priority 3 Fairness setup a priority management in relation with throughput To improve low data transfer web email compared to high data transfer ftp peer t...

Страница 46: ...this is the time in seconds between two web page auto refreshes SYSLOG retrieval of logs from a remote computer You have to have a syslog daemon on a remote computer For Windows systems that do not have a syslog daemon you can download one at http www kiwi enterprises com Sylog Server IP address IP address of the remote computer TRAP log retrieval using an SNMP management utility If you have SNMP ...

Страница 47: ...evel 3002 monitoring quality to join mac address is over high level quality for mac address went through the higher trigger level 4001 update erasing flash start length update process is erasing this flash part 4002 update duplicated flash_source to flash_dest update process duplicated a flash part from current partition to next partition 4003 update filename downloaded successfully in device_name...

Страница 48: ...communication quality Relay s The Ethernet frame will be relayed before reaching the final PLA Monitoring allows to control the communication quality beetwen the selected PLA and another Low threshold when the quality goes under this threshold an event is sent to the system log High threshold when the quality goes over this threshlod an event is sent to the system log Example A monitoring beetwen ...

Страница 49: ...st of the Ethernet devices behind each PLA The Ethernet device is repre sented by its MAC address A device is added to the list as soon as communications are established with it It disappears from the list after a certain period with no communi cations MAC ADDRESS CACHE ...

Страница 50: ...FIGURATION 50 8 3 5 PLA Selection Save Config The information entered via the web interface is stored in the RAM memory of the PLA200 To make sure the information is not lost even after a restart remember to save it ...

Страница 51: ...nt all of the HomePlug or PLRP adaptors on the same powerline network into groups of 15 devices With the PLA220 Bridge you can choose between two software configurations PLRP HomePlug or PLRP PLRP In both cases the PLA220 keeps a PLRP interface that allows it to use the advanced functions of the PLA200s repeater dynamic routing 6 PLRP PowerLine Routing Protocol is the name of the routing algorithm...

Страница 52: ...n problems inherent in the HomePlug protocol such as limits on distance and the number of devices that can be connected However the PLA200s cannot communicate directly with HomePlug certified devices PL100 ETH PL100 USB PL110 ETH over the same Powerline Communications net work To connect the networks you must use a PLA220 in PLRP HomePlug mode so that the devices can communicate via its two interf...

Страница 53: ...PLA220 has one PLRP interface and one HomePlug interface Other wise change save and restart so that the changes are implemented After restarting the PLA Selection HomePlug section of the PLA220 should be accessible The default password for all HomePlug devices PL100 ETH PL100 USB PL110 ETH as well as the HomePlug interface of the PLA220 is HomePlug F If all of your devices are set to the factory s...

Страница 54: ... or PL110 adapter here The password format is xxxx xxxx xxxx xxxx and is printed on the device label for example RTY6 FVBG 3GRT ASQD Once your list is complete remember to validate and save from the menu PLA Selec tion Save Config HOMEPLUG PASSWORD Indicate the DES 56 bit encryption key that will be sent to all of the devices defined on your list and to the PLA220 s HomePlug interface F Caution If...

Страница 55: ...it rate The more devices are connected the greater the risk of switching to ROBO mode Example To transfer a file between two computers on a powerline network 15 computers best case TCP rate approximately 6Mbps between the 2 computers 25 computers ROBO mode 1 Mbps rate bit rate TCP rate approximately 0 42Mbps F Whenever you have 16 devices or more we highly recommend using bridges to segment your n...

Страница 56: ...LRP PLRP Save and restart the device so that the changes are implemented After restarting the bridge has two PLRP interfaces Once there are more than 15 PLRP devices PLA200 on a powerline network it must be segmented Segmentation is done from the menu Global Network Products List Segment Edi tion In order facilitate segmentation 1 Give specific names to all of the PLA200s 2 Split the PLA200s into ...

Страница 57: ...age Once your network is segmented the list of devices is sorted by segment and then al phabetically by device names within the segment The configuration is complete and your network is optimised and operational Remember to save from the menu Global Network Save Config Before segmenting your network refer to the examples on the following page ...

Страница 58: ...o enable the devices to communicate use 1 PLA220 bridge set to PLRP HomePlug mode Method The PLA200 network is not segmented so you must leave the segment set to 0 on the PLA200s Set the PLA220 bridge to PLRP HomePlug mode and enter the list of 15 PL100s with their adaptor passwords from the page PLA Selection HomePlug ...

Страница 59: ...od Since the PLRP network is segmented you must number the segments starting with 1 Split the PLAs into two groups 15 and 6 If possible build your segments based on the physical location of your devices same floor same room etc Assign the first 15 PLA200s to segment 1 and the other 6 PLA200s to segment 2 Assign the PLA220 bridge to segments 1 and 2 ...

Страница 60: ...aters if necessary to communicate with the router Method The PLRP network is not segmented so you must leave the segment set to 0 on the PLA220s Split the PL100s into five groups of 15 If possible build your segments based on the physical location of your devices same floor same room etc Set each PLA220 bridge to PLRP HomePlug mode and enter the list of 15 PL100s with their adaptor passwords from ...

Страница 61: ...ed you must number the segments starting with 1 Split the PLAs into five groups of 15 If possible build your segments based on the physical location of your devices same floor same room etc Assign the same segment to all of the PLA200s in one group in this case 5 different seg ments 2 3 4 5 6 Assign segment 1 to all of the PLA220 bridges on one interface and the PLA segments 2 3 4 5 6 to the other...

Страница 62: ...roups of PLA200s and 2 groups of PL100s If possible build your segments based on the physical location of your devices same floor same room etc Set 2 PLA220 bridges to PLRP HomePlug mode and enter the list of 15 PL100s from the page PLA Selection HomePlug A different HomePlug password must be assigned to each of the 2 groups Assign the same segment number to all of the PLA200s in one group in this...

Страница 63: ...Locate PLA Link PLA Activity Ethernet Link Ethernet Activity Heartbeat Locate Port1 Link Port1 Activity Port2 Link Port2 Activity Dimensions 127x100x36 mm 127x100x36 mm Weight 470 g 470 g Operating Temperature 0 o à 70 o C Storage Temperature 55 o à 125 o C Operating Relative humidity 10 à 90 no condensing Storage Relative humidity 0 à 95 no condensing Power supply 220V 50Hz 35mA Sécurité et EMI E...

Страница 64: ...nt go on to step 5 If any of the adapters is not listed The PLA2xxs may have been programmed with a different encryption key check the PLC passwords of your adaptors Unplug the undetected adaptors then plug them back in and try this step again 5 Make sure that the connection between your network devices is working Use the ping utility that tests the response time between two devices ping the IP ad...

Страница 65: ...12 MOUNTING KIT 65 12 Mounting Kit Wall Mount Optional 35 mm DIN Rail kit ref KIT35 A ...

Страница 66: ...e MAC address Windows 95 98 Me Start run Enter winipcfg to view the IP Configuration table Scroll down until you find the information on your network interface card The MAC address Card address format is 00 00 B4 C3 90 BD Windows NT 2000 XP Start run Enter cmd to get to the command prompt C ipconfig all more This will display the Windows network configuration page by page The MAC address physical ...

Страница 67: ...S X In a terminal window enter the following command oxance ifconfig The MAC address ether format is 00 03 93 C9 74 aa Standalone Ethernet Device The MAC address of a standalone Ethernet device router printer controller video webcam etc is usually printed on the device label If not contact your dealer to obtain the MAC address of your device ...

Страница 68: ...sional IP address 192 168 1 16 FileZilla Server version 0_8_8 23 November 2003 http sourceforge net projects fileZilla Access point PLA200 with factory set IP address 192 168 1 251 The new firmware must be decompressed and copied to a folder on your hard disk For example c temp update Once the archive is decompressed you should have 4 files linuz_br romdisk_br img update hdr usr_br jffs F If you c...

Страница 69: ...o the FileZilla server configuration interface 7 Menu Edit Users In the column Users click on Add 8 Enter an identifier for example oxance 9 In the column Access Rights Click on Add go to your transfer directory C temp update Assign the following rights Files Read Write Directories List Subdirs In Account settings Check Password and enter a password for example oxance Check Show relative paths ...

Страница 70: ...ter the following URL address ftp login password adresseipserveurftp update hdr Example ftp oxance oxance 192 168 1 16 update hdr Progress is shown in real time in queue running OK If failed appears the update was unsuccessful and the device still has the previous version installed In this case the update must be repeated Updated devices will re main unchanged If the update fails repeatedly on one...

Страница 71: ...53 43 oxance 192 168 1 251 QUIT 000009 04 12 2003 14 53 43 oxance 192 168 1 251 221 Goodbye 000009 04 12 2003 14 53 43 oxance 192 168 1 251 disconnected 000010 04 12 2003 14 53 54 not logged in 192 168 1 251 Connected sending welcome message 000010 04 12 2003 14 53 54 not logged in 192 168 1 251 220 FileZilla Server version 8 8 final 000010 04 12 2003 14 53 54 not logged in 192 168 1 251 220 writt...

Страница 72: ... can be used to setup and diagnose the PLC network 1 What you need A pocket PC Microsoft PocketPC 2003 Windows CE 4 20 A compact flash slot An Ethernet compact flash adaptater 2 IP configuration Example PLA200 setup with 10 0 3 200 Pocket PC setup with 10 0 3 10 255 255 255 0 Setings IP address ...

Страница 73: ...it raw tcp internal Product selection directly related to the selected PLA2xx You can quickly find the physical location of your device locate change name location segment MTU and PLC password see the quality table in relation with others PLA see the routing table with relay if necessary Test allows to calculate the bandwith Mb s beetwen the Access point PLA and ano ther remote PLA Monitoring allo...

Страница 74: ...13 DATA SHEETS 74 3 1 Global admin ...

Страница 75: ...13 DATA SHEETS 75 3 2 Product selection ...

Страница 76: ...13 DATA SHEETS 76 3 3 Test ...

Страница 77: ...13 DATA SHEETS 77 3 4 Monitoring ...

Страница 78: ...nsmitting at the same time in which case a transmission would generate a collision During the transmission the device checks for collisions If a collision is detected the device transmits its message again after waiting for a random interval DHCP Dynamic Host Configuration Protocol This is a protocol that assigns a network configuration dynamically when a computer connects to the network You simpl...

Страница 79: ...tocols required for two nodes to communicate using the under lying network infrastructure physical medium switches routers bridges multiplexers interme diate nodes Application Presentation Session Transport Network Datalink Physical This model was developed by the ISO as a framework for international standards in heterogeneous computer network architecture When a layer transmits its data to the un...

Страница 80: ...ietary to their respective owners The descriptions and photos are not contractual With a view to continually im proving its products Oxance reserves the right to modify the characteristics of the products at any time and without prior notice Warning no part of this document may be reproduced without the prior consent of Oxance ...

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