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MDI-X/MDI Switch

893-743-A

B-5

For two 10BASE-T devices to communicate, the transmitter of each device 
must connect to the receiver of the other device. The reversal of the transmit 
and receive assignments is called a crossover function. Every 10BASE-T link 
segment requires a crossover function, and it can be implemented in one of two 
ways:

■

Internally, designed as part of the circuitry in the 10BASE-T device 
(see Figure B-4)

Figure B-4. Internal crossover function

■

Externally, with a crossover UTP cable that reverses the transmit and 
receive wire-pairs at the RJ-45 connector on one end of the UTP cable (see 
Figure B-5)

Figure B-5. External crossover function

MDI port

MDI-X port (transmit and

receive connections reversed)

1

2

3

6

Transmit

Receive

1

2

3

6

Receive

Transmit

Twisted pairs

2008.7

2007.4 

MDI-X port

MDI-X port

1

2

3

6

Receive

Transmit

1

2

3

6

Receive

Transmit

Twisted
pairs

Содержание 281xSA

Страница 1: ...SynOptics Communications Inc 4401 Great America Parkway Santa Clara CA 95054 408 988 2400 May 1994 Using the Model 281xSA Ethernet Hub ...

Страница 2: ...ESS FOR A PARTICULAR PURPOSE See the GNU General Public License for more details To receive a copy of the source code for the Compression Decompression Library and associated make files free of charge contact SynOptics Communications Inc attention Corporate Secretary Federal Communications Commission FCC Statement Note This equipment has been tested and found to comply with the limits for a Class ...

Страница 3: ...r be subject to certain restrictions Please refer to the notes in the operating instructions Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations Compliance with the applicable regulations is dependent upon the use of shielded cables It is the responsibi...

Страница 4: ...iv 893 743 A ...

Страница 5: ...e Model 281xSA Hubs 1 4 Dedicated Data Collection 1 4 SNMP based Management 1 4 Agent Software 1 5 MIB II 1 5 Support for SynOptics Optivity Features 1 6 Expanded View 1 6 Autotopology 1 6 Show Nodes Find Nodes 1 6 Allowed Nodes Security 1 6 Thresholds 1 7 Service Port Management 1 7 Chapter 2 Installing the Model 281xSA Hub Site Preparation 2 1 Operating Environment Requirements 2 2 Physical Loca...

Страница 6: ...rconnecting Model 2814SA Hubs Using the 10BASE FL Port 3 18 Interconnecting Hubs Using the MDI Port 1 3 19 Multiple hub Networks Including System 3000 Products 3 20 Chapter 4 Configuring the Model 281xSA Hub for IP IPX Networks Required Network Information and Configuration Actions 4 1 IP IPX and BootP Network Configuration Options 4 2 Using the Service Port 4 3 Terminal Connection Requirements 4 ...

Страница 7: ...ecifications Appendix B LEDs and Switches Reset Button B 4 MDI X MDI Switch B 4 Appendix C Pin Assignments AUI Port C 1 10BASE T Ports C 1 RS 232 Port C 2 Using the RS 232 Serial Port for an Out of band Connection C 3 Service Port C 4 Appendix D Link Integrity Test Function Appendix E Autopolarity Detection and Correction Appendix F IP Addressing Classes of Internet Addresses F 1 Internet Address ...

Страница 8: ...es H 1 Service Port Boot Messages H 2 TFTP Error and Information Messages H 2 Memory Error Messages H 5 Reset Message H 5 Service Port Run time Messages H 6 Configuration File Messages H 7 Appendix I Replacing SIMMs Preparation I 2 Tools and Equipment I 2 Preparatory Steps I 2 Removing the Cover I 3 Replacing the SIMM I 5 Setting Jumpers I 10 Reinstalling the Cover I 11 Final Steps I 12 Index ...

Страница 9: ...ng an AUI cable to a Model 508B 10BASE T Transceiver 3 4 Figure 3 3 Connecting a Model 928 transceiver to a network station 3 5 Figure 3 4 Connecting UTP cable to a Model 508B transceiver 3 5 Figure 3 5 Connecting the Model 928 transceiver to the wall 3 6 Figure 3 6 Connecting a 10BASE T interface card 3 7 Figure 3 7 MDI X MDI switch set to the MDI X position 3 8 Figure 3 8 Connecting 25 pair UTP ...

Страница 10: ...Boot File Configuration menu 4 22 Figure 4 13 IP Configuration menu 4 24 Figure 4 14 IPX Configuration menu 4 26 Figure 4 15 Menu for changing run time parameters 4 27 Figure 4 16 Protocol Parameters menu 4 29 Figure 4 17 IP Parameters menu 4 31 Figure 4 18 Changing the IP parameters 4 32 Figure 4 19 IPX Parameters menu 4 33 Figure 4 20 SNMP Parameters menu 4 34 Figure 4 21 SNMP IP Trap Receivers ...

Страница 11: ... F 2 Figure F 4 Subnet field in a Class B address F 4 Figure I 1 Cover retaining screws I 3 Figure I 2 Removing the hub cover I 4 Figure I 3 SIMM location I 6 Figure I 4 Removing a SIMM I 7 Figure I 5 Installing a SIMM I 8 Figure I 6 DRAM jumpers I 10 Figure I 7 Reinstalling the cover I 11 Figure I 8 Cover retaining screws I 12 ...

Страница 12: ...xii 893 743 A ...

Страница 13: ...le C 2 10BASE T port pin assignments RJ 45 jack C 2 Table C 3 RS 232 interface port pin assignments DB 25 plug C 2 Table C 4 Service port pin assignments DB 9 plug C 4 Table F 1 Reserved and available Internet addresses F 3 Table F 2 Subnet masks F 5 Table H 1 System operation messages H 1 Table I 1 DRAM SIMM capacities and types I 5 Table I 2 Jumper settings for total memory I 10 ...

Страница 14: ...xiv 893 743 A ...

Страница 15: ...ific configuration menus and commands Before installing the Model 281xSA hub read Chapter 3 Network Configurations and Cable Connections to plan the placement and connection of hubs and Ethernet stations Throughout this guide System 2000 or Model 28xx hub is used to refer to the Model 2803 2804 2813SA or 2814SA hub and Model 281xSA hub refers to either the Model 2813SA or the Model 2814SA Ethernet...

Страница 16: ...the step in more detail and may include results of performing the step Use of Enter Type and Press This guide uses enter type and press to describe the following actions When you read enter type the text and press the Enter key When you read type type the text but do not press the Enter key When you read press press only the alphanumeric or named key NOTE This format is used to highlight informati...

Страница 17: ...ore keys that must be pressed simultaneously are shown in text linked with a plus sign ALL CAPS DOS file and directory names Related Publications For more information about Ethernet networks refer to the LattisNet System 3000 Ethernet Connectivity Guide SynOptics part number 893 211 B For more information about network management refer to the documentation that was shipped with your SynOptics netw...

Страница 18: ...ract Hotline To contact the TRC Contract Hotline call U S and Canada 1 800 473 4911 Europe 011 31 3480 31616 Rest of the world 408 764 1000 Technical information is available from the SynOptics InfoFACTS fax on demand system by calling U S and Canada 1 800 786 3228 International 408 764 1002 You can also access technical information in the SynOptics forum on CompuServe For information about our ed...

Страница 19: ...he Model 281xSA Ethernet Hub includes fully integrated SNMP based Advanced Analyzer network management capabilities compatible with SynOptics network management software or other SNMP compatible network management software This chapter includes the following topics A list of features of the Model 281xSA hub A summary of Model 281xSA hub functions Descriptions of management options for the Model 28...

Страница 20: ...integrity test function Per port automatic disconnection autopartition of a port for too many consecutive collisions or a collision that is too long Automatic polarity detection and correction of the receive data wire pair for each port One AUI port on the Model 2813SA hub for connecting an Ethernet IEEE 802 3 transceiver allowing connection to another network hub station or segment using coaxial ...

Страница 21: ...l networks to grow easily to accommodate additional users Single hubs can serve as standalone units to support entry level departmental 10BASE T LANs As network requirements grow the initial investment is maintained by the unique expansion connection capability of the System 2000 hub Hubs can be connected through special expansion ports that extend management control to all ports in the network cl...

Страница 22: ...ts and records selected statistics in realtime on a per port basis The programmable packet slices are moved to a shared buffer that the agent can access for management SNMP based Management The Model 281xSA hub implements SNMP the standard communications protocol that simplifies the management of network devices linked together in a multivendor networking environment SNMP agents reside in network ...

Страница 23: ...of network data Network topology Physical components such as cables and hubs Faults errors and hardware status This level of network management also enables you to detect and correct network faults as well as to isolate monitor and reconfigure specific network branches The Model 281xSA hubs store the agent software in onboard flash memory This feature allows software upgrades to be handled over th...

Страница 24: ... IPX Autotopology in addition to standard IP Autotopology The details of Autotopology vary according to the platform on which the Optivity software is running Consult the publications that were shipped with your Optivity software for more information Show Nodes Find Nodes The Show Nodes command is an Optivity feature that displays a window showing all the nodes in the current view and in any subvi...

Страница 25: ...s or host modules Model 281xSA hubs can also be configured with ratio thresholds that allow settings for the ratio of bad packets network errors or collisions to good packets The hubs further support additional threshold types such as rate gauges Service Port Management The service port located on the front panel of the Model 281xSA hub provides a serial communication link to the hub By connecting...

Страница 26: ...ave ordered additional memory for your Model 281xSA hub it is a good idea to install the new SIMM before you proceed with the hub installation You can upgrade the memory on the Model 281xSA hub at any time but you must open the hub cabinet to gain access to the SIMM socket For instructions on installing SIMMs see Appendix I Replacing SIMMs Site Preparation Before you begin installing the Model 281...

Страница 27: ...onditions At least 6 feet to nearest source of electromagnetic noise such as photocopy machine or arc welder No dust Physical Location Requirements There are certain physical requirements for installing the Model 281xSA hub whether you are installing the hub on a table in a rack or on a wall Make sure your location meets the following requirements Service access Minimum 12 inches front and rear fo...

Страница 28: ...el 281xSA hub check to see that you have the following items see Figure 2 1 Model 281xSA Ethernet Hub Two rack mounting brackets Two wall mounting brackets Installation hardware Five 4 40 x 5 16 flat head Phillips screws for attaching mounting brackets one extra Four 10 32 x 3 4 pan head Phillips screws and nylon washers for rack mounting Power cord This user s guide Release notes Warranty card CA...

Страница 29: ...ts 2 Phillips screwdriver for tightening rack mounting screws For wall installation Piece of plywood approximately 6 inches by 20 inches minimum 1 2 inch thick Drill Four 12 x 5 8 pan head Phillips sheet metal screws Antistatic mat and wrist strap attached to an antistatic leash to protect electronic components from static electricity damage Screws Feet MDI X MDI X MDI AUIPort 1 2 3 4 5 6 7 8 9 10...

Страница 30: ... each marked location on the bottom of the hub see Figure 2 2 Figure 2 2 Attaching feet 2 Set the hub on a table or shelf so that it has at least 2 inches of space on all sides 3 Connect the power cord first to the power entry receptacle on the back of the hub see Figure 2 3 and then to the wall Figure 2 3 Connecting the power cord Feet placement guides 4642 EXPANSION 2 EXPANSION 3 EXPANSION 4 EXP...

Страница 31: ...ct your customer support representative Figure 2 4 Power LED At this point the hub is ready to have the network cables connected See Chapter 3 Network Configurations and Cable Connections for information on completing the network installation MDI X MDI AUIPort AUI Partition Power NM Control Isolate Data Data Col Power LED 2 3 Expansion µP Fault On Line Int 4644 ...

Страница 32: ... countersunk screw holes in the bracket with the bracket mounting holes in the hub The bracket covers a few of the chassis ventilation holes This does not compromise the cooling of the hub c Insert two 4 40 x 5 16 flat head screws through each bracket and into the bracket mounting holes in the hub cabinet d Using a 1 Phillips screwdriver tighten the screws to secure each bracket MDI X MDI X MDI AU...

Страница 33: ...an equipment rack b Insert two 10 32 x 3 4 pan head screws with nylon washers through each bracket and into the rack c Using a 2 Phillips screwdriver tighten the screws to secure the hub to the rack MDI X MDI X MDI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Link Part 2 3 4 5 Expansion AUI Partition Power NM Control Isolate Data Data Col µP Fault On Line Reset System Operation RS 232 Service Port Int A...

Страница 34: ...l see Figure 2 8 If this LED does not light contact your customer support representative Figure 2 8 Power LED At this point the hub is ready to have the network cables connected See Chapter 3 Network Configurations and Cable Connections for information on completing the network installation EXPANSION 2 EXPANSION 3 EXPANSION 4 EXPANSION 5 4643 MDI X MDI AUIPort AUI Partition Power NM Control Isolat...

Страница 35: ...ch side of the hub where you removed the screws as shown in Figure 2 9 and align the countersunk screw holes in the bracket with the bracket mounting holes in the hub c Insert two 4 40 x 5 16 flat head screws through each bracket and into the bracket mounting holes in the hub cabinet see Figure 2 9 d Using a 1 Phillips screwdriver tighten the screws to secure each bracket NOTE You must supply four...

Страница 36: ... mounting screw locations on the plywood where you plan to install the hub b Drill pilot holes at the marked locations Figure 2 10 Template for wall mounting 3 Holding the hub against the plywood align the bracket holes with the pilot holes in the wood 4 Insert and tighten the sheet metal screws see Figure 2 11 17 7 8 5 2002 2 ...

Страница 37: ...3 743 A Figure 2 11 Securing the Model 281xSA hub to the wall 5 Connect the power cord first to the power entry receptacle and then to the wall outlet see Figure 2 12 Figure 2 12 Connecting the power cord 2004 6 EXPANSION 4 EXPANSION 5 4648 ...

Страница 38: ... customer support representative Figure 2 13 Power LED At this point the hub is ready to have the network cables connected See Chapter 3 Network Configurations and Cable Connections for information on completing the network installation MDI X MDI AUIPort AUI Partition Power NM Control Isolate Data Data Col Power LED 2 3 Expansion µP Fault On Line Int 4644 ...

Страница 39: ...n this chapter assume that UTP horizontal distribution cables are already installed providing connection from the work area wall outlet to the wiring closet punchdown blocks and that cables are properly identified Normal cabling system practices are assumed your installation procedure may vary slightly depending on your particular cabling system This chapter includes the following topics A summary...

Страница 40: ...1xSA 280x hub cluster This arrangement provides Advanced Analyzer SNMP management for all stations up to 80 connected to the cluster It also increases the number of available ports in two ways This configuration adds the 16 ports on the Model 281xSA hub to the total number of available ports The cluster frees the MDI X MDI ports on the hubs for station connections if you were formerly using the MD...

Страница 41: ... host port The maximum allowed length of the UTP cable to an Ethernet station is 100 meters Figure 3 1 Typical single hub configuration Ethernet Station Connections For a single hub network the only cable connections are those between the Ethernet stations and the hub Ethernet station connections are standard for all network configurations irrespective of the number of hubs used and are typically ...

Страница 42: ...nal 10BASE T transceiver such as the SynOptics Model 508B or 928 transceiver To connect the station to the premises cabling follow these steps 1 Connect the transceiver to the station a If you are using a Model 508B 10BASE T transceiver attach an AUI cable for example a Model 903A cable from the interface card to the AUI port of the Model 508B transceiver as shown in Figure 3 2 Figure 3 2 Connecti...

Страница 43: ...able between the transceiver and the wall outlet a If you are using a Model 508B transceiver connect a UTP patch cable for example a Model 910 cable from the RJ 45 port of the transceiver to the RJ 45 connector of the wall outlet see Figure 3 4 Figure 3 4 Connecting UTP cable to a Model 508B transceiver 2517 2172 4 ...

Страница 44: ...tions are connected to the UTP horizontal distribution cabling through the RJ 45 connectors of wall outlets Using a 10BASE T Interface Card If a 10BASE T network interface card is installed in the Ethernet station you do not need the external 10BASE T transceiver and AUI cable To connect an Ethernet station with a 10BASE T network interface card follow these steps 1 Connect one end of a UTP patch ...

Страница 45: ... outlets Cable Connections in the Wiring Closet To complete the connection of each Ethernet station to a 10BASE T host port on the Model 281xSA hub follow these steps 1 Verify that the total UTP segment length including building wires and all patch cables used on any run between the station and the hub does not exceed 100 meters NOTE To connect Ethernet stations to IBM Type 1 STP cable use the Mod...

Страница 46: ... assignments of the transmit and receive data wire pairs for port 1 If the remote end of the wire is connected to a network station or to an MDI port on another hub use the MDI X configuration Ports 2 through 16 are internally configured as MDI X ports See Appendix B LEDs and Switches for a more complete description of the MDI X MDI switch operation 1 2 Link Part MDI X MDI switch MDI X MDI 2 3 4 5...

Страница 47: ...ure 3 8 Connecting 25 pair UTP cable 4 Connect one end of a UTP patch cable for example a Model 910 cable to the UTP patch panel see Figure 3 8 Punchdown block with 50 pin telco connector 50 pin telco connector Equipment rack UTP patch panel Model 2813SA Ethernet Hub 25 pair cable Wall LattisHub 2813 10BASE T Concent rator 4652 ...

Страница 48: ...stem 2000 hubs support automatic polarity detection and correction which detects and automatically corrects for signal inversions on the UTP receive data wire pair If any receive data wire pair was mistakenly reversed in the punchdown block during cable installation the System 2000 hub internally corrects for the miswiring and the data path operates correctly For more information about this featur...

Страница 49: ...280x hubs up to a maximum of four Model 280x hubs A cluster lets you build the network from a starting point of 16 or fewer stations to a maximum of 80 stations and extend network management to all 80 stations Figure 3 10 Typical Model 2813 2803 cluster configuration Punchdown block with 50 pin telco connector Equipment rack UTP patch panel Model 2813SA 280x cluster 25 pair cable Wall Model 988 ex...

Страница 50: ...le logical IEEE 802 3 Ethernet repeater If the Model 281xSA hub in a cluster loses power the cluster configuration stops operating as a cluster It loses the SNMP management and the Model 280x hubs become isolated 16 port segments If any one of the Model 280x hubs in a cluster loses power the remaining hubs maintain the cluster configuration Connecting a Cluster Configuration In the work area conne...

Страница 51: ...e other end of the expansion cable to an available expansion port on the Model 281xSA hub At this point if the hub power is on one LED lights on each hub as follows The Expansion Status LED on the Model 281xSA hub lights The associated Expansion LED on the Model 280x hub lights Figure 3 11 Connecting a cluster configuration EXPANSION 2 EXPANSION 3 EXPANSION 4 EXPANSION 5 EXPANSION TERMINAL PORT EX...

Страница 52: ...een any two Ethernet stations Remember that a cluster counts as only a single repeater To extend the network further use a bridge or router To use port 1 as an interconnect port to an MDI X port on another hub you must configure it as an MDI port using the MDI X MDI switch Interconnecting Model 2813SA Hubs Using the AUI Port You can connect the AUI port on the Model 2813SA hub to any medium specif...

Страница 53: ...ed to a fiber backbone An AUI patch cable connects each Model 2813SA hub to a SynOptics Model 504A transceiver that has the SQE test disabled A fiber optic cable is connected between the two transceivers Figure 3 12 Interconnecting Model 2813SA hubs using an IEEE 802 3 10BASE FL transceiver Model 2813SA Ethernet Hub Model 2813SA Ethernet Hub AUI cable AUI cable IEEE 802 3 10BASE FL transceiver for...

Страница 54: ...Model 2813SA hub that is to be inter connected through an IEEE 802 3 transceiver Connecting the AUI Port to Coaxial Backbone You can use the AUI port to connect a Model 281xSA hub to a coaxial backbone through an IEEE 802 3 MAU Figure 3 13 shows a Model 2813SA hub and a Model 2803 2813SA cluster connected to a coaxial backbone through IEEE 802 3 MAUs An AUI cable is connected between the AUI port ...

Страница 55: ... between the IEEE 802 3 MAU and the AUI port on the Model 2813SA hub Repeat steps 1 through 3 for each Model 2813SA hub that is to be connected to the coaxial backbone Model 2813SA Ethernet Hub Model 281xSA 280x cluster IEEE 802 3 MAU IEEE 802 3 MAU AUI port AUI port Coaxial backbone AUI cable AUI cable 50 ohm termination 50 ohm termination LattisHub 2813 LattisHub 2813 Model 2813SA hub Model 2803...

Страница 56: ...EEE fiber optic inter repeater link FOIRL standard The fiber interconnect ports on the Model 2814SA hub support up to 2 kilometer distances using 62 5 125 µm core cladding multimode optical fiber To connect two Model 2814SA hub 10BASE FL ports follow these steps 1 Make sure the power is on for both hubs 2 Connect one end of a fiber cable to the ST connectors on one Model 2814SA hub 10BASE FL port ...

Страница 57: ...I port 1 for interconnecting hubs follow these steps 1 Use a small flat blade screwdriver to set the MDI X MDI switch on a Model 281xSA hub to the MDI position see Figure 3 16 This adjustment sets port 1 as an MDI port NOTE Interconnections through the MDI X MDI ports must always be from MDI to MDI X Ports 2 through 16 are internally configured as MDI X ports and the switchable port 1 is factory s...

Страница 58: ...described You can connect a Model 2813SA hub AUI port through a MAU or FOMAU to a host port on a System 3000 concentrator or you can connect a Model 2814SA hub 10BASE FL port directly to an optical port located in a System 3000 concen trator For detailed information about networks using System 3000 equipment see the LattisNet System 3000 Ethernet Connectivity Guide Figure 3 17 shows a typical netw...

Страница 59: ... Model 2814SA 2804 cluster serves as the central point for the star wired configuration Clusters are interconnected through the fiber interconnect ports IEEE 802 3 FOMAU for example Model 504 ST transceiver Model 2813SA Ethernet Hub Model 3304A host module Model 3314SA Network Management Module IEEE 802 3 FOMAU for example Model 504 ST transceiver Model 2813SA Ethernet Hub AUI cable AUI cable UTP ...

Страница 60: ...rely of Model 281xSA clusters and single hubs Model 281xSA hub cluster Model 2814SA Ethernet Hub UTP cables to Ethernet stations Fiber optic cables Model 281xSA hub cluster Model 2814SA Ethernet Hub Model 2804 hubs Model 2814SA Ethernet Hub Model 2804 hubs LattisHub 2814SA LattisHub 2814SA LattisHub 2814SA 4662 ...

Страница 61: ...n file see Appendix G Setting Up the Model 281xSA Hub Configuration File and refer to the documentation that shipped with your load server Figure 4 1 Hardware address label On a network managed through IP network management with or without IPX the Model 281xSA hub requires a BootP server or requires configuration through the service port The following sections explain IP and IPX configu ration opt...

Страница 62: ... through a terminal connected to the service port provided that you first modify the load server configuration file BOOTPTAB TXT and the Model 281xSA configuration file The Model 281xSA configuration file should be installed on the load server as specified in the publications that came with load server or network management software Text for the Model 281xSA configuration file and file parameter d...

Страница 63: ...cally a PC running common communications software A standard RS 232 serial communications cable with a DB 9 socket at one end for connection to the service port and an appropriate connector usually a DB 9 or DB 25 plug at the other end for connection to the serial port on the terminal or terminal emulator Check the service port pin assignment in Appendix C Pin Assignments to ensure correct connect...

Страница 64: ...rom the Model 281xSA service port such as the results of the self diagnostic tests that run automatically after the hub is reset or the power is turned on To prepare the Model 281xSA hub for configuration or to view the service port messages from the Model 281xSA hub perform the next step 6 Reset the hub or cycle the power to the Model 281xSA hub Watch the output display see the next section as th...

Страница 65: ...If an error occurs the self test loops to the point of the error If the error persists the Model 281xSA hub resets itself and restarts If the same error message repeatedly displays on the monitor or if the Fault LED remains lit contact your supplier s customer service department Model 281xSA Boot PROM Revision A Mar 11 1994 4754 Hit ESC to bypass memory tests EPROM checksum test PASSED System DRAM...

Страница 66: ...tomatically trying to find the BootP server that has its configuration parameters Figure 4 3 shows an example of the service port screen during a BootP sequence Figure 4 3 BootP service port screen display To stop the automatic process and access the Model 281xSA boot configuration menus press Ctrl C See Setting the Boot Configuration without a BootP Server later in this chapter Model 281xSA Code ...

Страница 67: ...e Load Mode Remote w Local Management protocol IP_IPX Configuration load mode Remote w Local Read community public Write community private The first time the Model 281xSA hub is powered on it uses these settings to perform the following boot sequence 1 The Model 281xSA hub performs a diagnostic self test and displays the results on the terminal screen connected to the service port if one is connec...

Страница 68: ...Setting the Boot Configuration without a BootP Server On some networks a BootP server is not available to support the 281xSA SNMP network management agent or a configuration file other than the default configuration shown in Appendix G Setting Up the Model 281xSA Hub Configuration File If your Model 281xSA hub is connected to such a network and you use IP management you must configure your Model 2...

Страница 69: ...he hub IP network address as follows a Press j to display the IP Configuration menu b Press i to display the Set IP Address prompt c Enter the Model 281xSA hub IP address Boot Main Menu 281xSA Ethernet NMM 4756 MAC Address 00 00 81 xx xx xx Boot Mode Boot Protocol Management Protocol Network Auto IP_IPX m p t i f k z Toggle boot mode Toggle boot protocol Toggle management protocol Toggle image loa...

Страница 70: ...execute boot files to restart the hub As the hub goes through the booting process messages are displayed on the screen as shown in Figure 4 5 and Figure 4 6 Figure 4 5 Boot messages remote image file load 4757 DCE 1 TFTP NETASCII to load the config file s281xsa cfg Config file loaded DCE 1 TFTP OCTET to load the image file s281xsa img Image file loaded Images in DRAM and FLASH are different Begin ...

Страница 71: ...ssociated submenus are described in later sections of this chapter NOTE If you plan to manage your network only with IPX network management stations BootP server or service port configuration is unnecessary The Model 281xSA hub automatically obtains the required IPX network information from the network 4758 Image file loading from FLASH Loaded image Copyright c 1994 SynOptics Communications Inc Al...

Страница 72: ...se menus only after the image code is loaded To access these menus press Ctr Y Figure 4 7 Primary boot configuration menus Toggle boot mode Toggle boot protocol Toggle management protocol Toggle image load mode Toggle config file load mode Reset NVRAM to factory defaults Reset management module System configuration menu Boot file configuration menu IP configuration menu IPX configuration menu Load...

Страница 73: ...Parameter menu Set my IP address Set subnet mask Set default router s IP address Set secondary default router s IP address Set boot router s IP address Set boot server s IP address Set boot file name Return to Protocol Parameter menu Set read community Set read write community Toggle authentication traps Set IP trap receivers Set IPX trap receivers Return to main menu Set IP parameters Set IPX par...

Страница 74: ...want to issue If you select a toggle command the specified parameter changes its setting in the upper part of the menu Boot Main Menu 281xSA Ethernet NMM 4756 MAC Address 00 00 81 xx xx xx Boot Mode Boot Protocol Management Protocol Network Auto IP_IPX m p t i f k z Toggle boot mode Toggle boot protocol Toggle management protocol Toggle image load mode Toggle config file load mode Reset NVRAM to f...

Страница 75: ... primary boot configuration without a BootP server press Ctrl C during the boot process to display the menu shown in Figure 4 10 Figure 4 10 Boot main menu Boot Main Menu 281xSA Ethernet NMM 4756 MAC Address 00 00 81 xx xx xx Boot Mode Boot Protocol Management Protocol Network Auto IP_IPX m p t i f k z Toggle boot mode Toggle boot protocol Toggle management protocol Toggle image load mode Toggle c...

Страница 76: ...ed command See Boot Configuration Commands for a complete description of all the boot configuration commands on the Boot main menu Boot Configuration Commands The Boot main menu includes the following commands m Toggle boot mode Shifts the boot mode between Network and NVRAM The factory default setting is Network When Network is selected the Model 281xSA hub tries to acquire its configuration over...

Страница 77: ...d starts over When IP is selected the Model 281xSA hub tries to locate a BootP server and load the IP parameter values It also writes these values into NVRAM If it cannot find a BootP server or transfer the configuration file it times out and returns to the Boot main menu without obtaining a network address If IP is selected the Model 281xSA hub does not look for IPX parameters When IPX is selecte...

Страница 78: ...network management stations When IPX is selected the Model 281xSA hub can be managed only by IPX network management stations i Toggle image load mode Shifts the image load mode among Remote Remote w Local and Local The factory default setting is Remote w Local When Remote is selected the image file is never loaded from local flash EPROM even if downloading fails and the local image file exists Whe...

Страница 79: ...f the remote load is not successful the Model 281xSA hub loads the configuration file data from NVRAM k Reset NVRAM to factory defaults Restores all menu settings and NVRAM data to the original values set at the factory z Reset management module This command causes the Model 281xSA hub to go through the self test and image loading process Before the command takes effect a confirmation message appe...

Страница 80: ...281xSA hub to try to load the configuration specified by the parameter values shown on the menu and begin operation If the image load mode is set to Remote or Remote w Local this command can be used to interactively test the operation of your TFTP server If the parameters are set correctly a series of boot messages display as shown in Figure 4 5 If the image load mode is set to Local this command ...

Страница 81: ...e DRAM self tests when the hub is powered up These tests can last for more than 15 minutes depending on memory size Bypassing the tests speeds up the powerup sequence However if you enable the self tests you are more likely to discover any memory problems immediately rather than trying to diagnose obscure run time errors later System Configuration Menu 281xSA Ethernet NMM 4762 Revisions System Con...

Страница 82: ...ot main menu the menu in Figure 4 12 is displayed Figure 4 12 Boot File Configuration menu This menu allows you to set up the configuration data for downloading remote configuration and image files from a server Boot File Configuration Menu 281xSA Ethernet NMM 4763 Server s IP Boot Router s IP Config file name Image file name xxx xxx xxx xxx xxx xxx xxx xxx c nmm 281xsa cfg c nmm 281xsa img s r f ...

Страница 83: ...at each part of the address means f Set config file name Use this command to enter a filename or full pathname for the configuration file The filename can be up to 64 visible characters including embedded punctuation and white space This filename is used verbatim in the TFTP open packet The default filename is none i Set image file name Use this command to enter a filename or full pathname for the...

Страница 84: ...guration menu The new settings must be written to NVRAM using the w command Write boot config to NVRAM on the Boot main menu in order for them to take effect IP Configuration Menu 281xSA Ethernet NMM 4764 IP Address Subnet Mask Default Gateway xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx Enter command i s g n Esc Set IP address Set Subnet mask Set default gateway Get IP information from network...

Страница 85: ... subnet mask the hub uses during operation To set this subnet mask to none enter 0 0 0 0 or type none The default mask is 255 255 255 0 See Appendix F IP Addressing for a description of subnet masks g Set default gateway Use this command to set the default gateway address of the Model 281xSA hub The default gateway address can be up to 12 numeric characters written in dotted decimal notation This ...

Страница 86: ...d Nearest Server SAP broadcasts to learn the local network number s Set network number Eight numeric characters identifying the IPX network number the Model 281xSA hub is attached to This is the network number the hub uses during operation To set this number to none enter 00000000 Esc Return to Boot Main Menu Returns the display to the Boot main menu IPX Configuration Menu 281xSA Ethernet NMM 4765...

Страница 87: ...ameters Set the location string for the Model 281xSA hub If you change any of these settings you must store the new settings in NVRAM the w command and either restart or reset the Model 281xSA hub the r or z command in order for the new settings to take effect Figure 4 15 Menu for changing run time parameters SynOptics Model 2813SA Version 1 0 0 Main Menu 4766 MAC address Agent functionality 00 00...

Страница 88: ...uthentication traps and to set IP and IPX trap receivers o Set out of band parameters Displays another menu that allows you to set or modify the initialization string and baud rate p Set profile parameters Displays another menu that allows you to set or modify the location name and administrator contact strings b Set boot parameters Displays another menu that allows you to set or modify the boot m...

Страница 89: ... message Press CTRL Y to begin z Reset 281xSA Resets the unit This command causes the Model 281xSA hub to go through self tests and the image loading process again Protocol Parameters Menu When you select the i command Set protocol parameters from the run time parameters menu the menu in Figure 4 16 is displayed Figure 4 16 Protocol Parameters menu Protocol Parameter Menu 4767 Management Protocol ...

Страница 90: ...IP_IPX When IP_IPX is selected the Model 281xSA hub can be managed by either IP or IPX network management stations When IP is selected the Model 281xSA hub can be managed only by IP network management stations When IPX is selected the Model 281xSA hub can be managed only by IPX network management stations ESC Return to main menu Returns the display to the main menu NOTE The Model 281xSA hub must h...

Страница 91: ... Figure 4 18 The new settings will take effect only after you exit the configuration program and save them to NVRAM using the w command on the main menu then restart or reset the Model 281xSA hub 4768 IP Parameters Menu Current working parameters Enter command IP Address Subnet Mask Router IP Address Secondary Router IP Address a m r d ESC Set my IP address Set subnet mask Set default router s IP ...

Страница 92: ... the address is none that parameter entry remains blank at the top of the menu m Set subnet mask Up to 12 numeric characters written in dotted decimal notation To set this address to none enter 0 0 0 0 See Subnetting in Appendix F IP Addressing for a description of subnet addresses 4769 IP Parameters Menu Current working parameters Enter command IP Address Subnet Mask Router IP Address Secondary R...

Страница 93: ...ress to none enter 0 0 0 0 ESC Return to Protocol Parameters Menu Returns the display to the Protocol Parameters menu IPX Parameters Menu When you select the x command Set IPX parameters from the Protocol Parameters menu the menu in Figure 4 19 is displayed Figure 4 19 IPX Parameters menu 4770 IPX Parameters Menu Current working parameters Enter command IPX Network Number IPX Node Address Frame Ty...

Страница 94: ... Return to Protocol Parameters Menu Returns the display to the Protocol Parameters menu SNMP Parameters Menu When you select the s command Set SNMP parameters from the run time parameters menu the menu shown in Figure 4 20 is displayed Figure 4 20 SNMP Parameters menu SNMP Parameters Menu 4771 SNMP Read Community SNMP read write community SNMP authentication traps public public ON OFF r w t i x ES...

Страница 95: ...d write SNMP operations To set this value to none press Enter without typing any other characters This disables access to the read write SNMP operations t Toggle authentication traps Switches the SNMP authentication traps for IP and IPX between On and Off i Set IP trap receivers Displays a menu see the next section SNMP Trap Receivers for IP that allows you to list up to 10 IP addresses to send SN...

Страница 96: ...creen displays the message Enter new trap receiver s IP address Enter the address of the trap receiver you are adding It can be up to 12 numeric characters written in dotted decimal notation N N N N with N being a value from 0 to 255 inclusive When you press Enter the screen displays the message Enter new trap receiver s community string IP SNMP Trap Receivers Menu 4772 IP trap receivers defined 1...

Страница 97: ...ers ESC Return to SNMP Parameters Menu Returns the display to the SNMP Parameters menu SNMP Trap Receivers for IPX When you select the x command Set IPX trap receivers from the SNMP Parameters menu the menu shown in Figure 4 22 is displayed NOTE The age out time specifies the length of time in milli seconds an entry may stay in the trap receiver s table Once an entry ages out it is removed from th...

Страница 98: ...ber in hexadecimal Enter the IPX network number of the trap receiver you are adding It must be eight hexadecimal characters To set this address to none enter 00000000 When you press Enter the screen displays the message Enter new trap receiver s IPX node address in hexadecimal IPX SNMP Trap Receivers Menu 4773 IPX trap receivers defined 1 2 3 4 5 6 7 8 9 10 none none none none none none none none ...

Страница 99: ... delete Enter the number 1 through 10 of the entry you are deleting The screen scrolls and changes the deleted entry to read none on the displayed list of defined trap receivers ESC Return to SNMP Parameters Menu Returns the display to the SNMP Parameters menu NOTE The age out time specifies the length of time in milli seconds an entry may stay in the trap receiver s table Once an entry ages out i...

Страница 100: ...cludes the following commands s Set baud rate Shifts display to another menu with selections for possible baud rate settings for the external modem Possible choices for the baud rate are 1 300 2 1200 3 2400 4 4800 5 9600 After selecting one of the baud rate settings press ESC to return to the Out of Band Parameters menu Out of Band Parameters Menu 4774 Initialization String Baud rate none 9600 s i...

Страница 101: ...hen you select the c command Set security parameters from the run time parameters menu the menu in Figure 4 24 is displayed The service port on the Model 281xSA hub features a security lock software switch for protection of the node security configuration This switch lets you prevent unauthorized changes to the security settings without physical access to the hub When the security configuration lo...

Страница 102: ...you can disable security altogether or enable security at the hub slot or port level t Toggle security configuration lock Shifts the security configuration lock between ON and OFF ESC Return to main menu Returns the display to the main menu Set Security Parameters 4775 Security level Security configuration lock OFF OFF l t ESC Set security level Toggle security configuration lock Return to main me...

Страница 103: ...f the Model 281xSA hub This entry is useful for determining the physical location of a hub n Set name Specifies a name for the Model 281xSA hub c Set contact Specifies the person who should be contacted about matters pertaining to the Model 281xSA hub ESC Return to main menu Returns the display to the main menu Profile Parameters Menu 4776 Location Name Administrator Contact Building A 4th floor w...

Страница 104: ...etwork using the protocol specified by the p command Toggle boot protocol Boot Parameters Menu 4777 1 Local Image Status Boot Mode Boot Protocol Image Load Mode Config Load mode Boot Router IP Address Boot Server IP Address Image File Name Config File Name On Board Version 1 0 0 Use EEPROM Use NETWORK Auto IP IPX IP_IPX REMOTE LOCAL REMOTE w LOCAL REMOTE LOCAL REMOTE w LOCAL xxx xxx xxx xxx xxx xx...

Страница 105: ...P Then the Model 281xSA hub seeks the IPX parameters and configuration file from a Novell server and writes the values into NVRAM As long as it can find either IP or IPX parameters the Model 281xSA hub writes the values into NVRAM If the Model 281xSA hub fails to locate either an IP BootP server or a Novell IPX server or router it resets and starts over When IP is selected the Model 281xSA hub tri...

Страница 106: ...it finds one it transfers the configuration file obtains the IPX network number and writes the parameter values into NVRAM If it fails to find IP parameters the Model 281xSA hub resets itself and starts the booting process over t Toggle image load mode Shifts the image load mode among Remote Remote w Local and Local The factory default setting is Remote w Local When Remote is selected the Model 28...

Страница 107: ...cal configuration file exists When Remote w Local is selected the Model 281xSA hub tries to download the configuration file according to the boot mode setting The local configuration file is used as a backup in case the remote download fails If the download fails instead of resetting itself and starting the process over the Model 281xSA hub loads the configuration file from local flash EPROM When ...

Страница 108: ... used by the TFTP server For example if the TFTP server is an MS DOS based implementation a sample string can be c tftpboot 281xSA img If the TFTP server is UNIX based a sample string can be tftpboot 281xSA img f Set boot file name Up to 64 ASCII characters Identifies the pathname and filename specifying the Model 281xSA hub configuration file to be loaded The string format is specific to the oper...

Страница 109: ...1 0 A at 100 V AC 0 5 A at 240 V AC Fuses Internal Fuse rating 2 A at 240 V AC Optical Specifications Model 2814SA Ethernet Hub Optical transmit range 12 dBm to 18 dBm Optical receive average power range 12 dBm to 32 3 dBm Physical Specifications Weight 8 2 lb 3 7 kg Dimensions W 17 3 by D 7 2 by H 2 5 in W 43 9 by D 18 2 by H 6 3 cm Rack space 1 5 rack mount spaces Environmental Specifications Op...

Страница 110: ...AmtsblVfg No 243 1991 and Vfg 46 1992 VCCI Class 1 ITE Safety Agency Approvals UL listed CSA certified TUV licensed Microprocessors 20 MHz Motorola 68EC040 Network Controller 80C52 microcontroller Memory 2 MB dynamic RAM upgradable to 8 MB by adding standard RAM SIMMs plus additional static RAM for specialized functions 512 KB flash EPROM upgradable to 1 MB 32 KB EEPROM 256 KB boot EPROM ...

Страница 111: ...Figure B 2 Model 2814SA Ethernet Hub front panel MDI X MDI X MDI AUIPort 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Link Part 2 3 4 5 Expansion AUI Partition Power NM Control Isolate Data Data Col µP Fault On Line Reset System Operation RS 232 Service Port Int 4638 MDI X MDI X MDI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Link Part 2 3 4 5 Expansion Power NM Control Isolate Data Data Col µP Fault On Line...

Страница 112: ...ED Model 2813SA hub AUI Partition Amber AUI port has been autopartitioned because of an excessive number of consecutive collisions an excessively long single collision signal or jabber input or it has been partitioned by SNMP network management 10BASE FL Port LEDs Model 2814SA hub Partition Amber 10BASE FL port has been autopartitioned because of an excessive number of consecutive collisions an ex...

Страница 113: ...cate that the download or local load has succeeded and has begun to execute the run time image If the µP Fault LED is on the On Line LED lights to indicate that the concentrator is running its self test or that the download has failed eight times NM Cntrl Amber Lights when the concentrator has been isolated partitioned from the cluster backplane or when one or more ports have been partitioned by S...

Страница 114: ...then back on except that data integrity is not interrupted during a reset and is interrupted during a power recycle Figure B 3 Reset button MDI X MDI Switch Model 281xSA hubs allow you to configure port 1 as an MDI or MDI X port Media dependent interface MDI is specified by the IEEE 802 3i 10BASE T Standard to be the electrical and mechanical interface to the UTP wire An MDI port transmits out to ...

Страница 115: ...Internally designed as part of the circuitry in the 10BASE T device see Figure B 4 Figure B 4 Internal crossover function Externally with a crossover UTP cable that reverses the transmit and receive wire pairs at the RJ 45 connector on one end of the UTP cable see Figure B 5 Figure B 5 External crossover function MDI port MDI X port transmit and receive connections reversed 1 2 3 6 Transmit Receiv...

Страница 116: ...h UTP cable to connect MDI ports to MDI X ports 10BASE T transceivers are implemented as MDI ports and 10BASE T repeaters for example ports 2 through 16 of the Model 281xSA hubs have MDI X ports The Model 281xSA hub configures ports 2 through 16 as MDI X ports while port 1 can be configured as either MDI or MDI X through the MDI X MDI switch on the front panel see Figure B 6 Figure B 6 MDI X MDI s...

Страница 117: ...AUI Port Table C 1 shows the pin assignments for the DB 15 connector on the AUI port on the Model 281xSA hub Table C 1 AUI port pin assignments DB 15 socket Connector Pin Signal Pin Signal 1 2 3 4 5 6 7 8 GND CI A DO A GND DI A GND NC GND 9 10 11 12 13 14 15 CI B DO B GND DI B 12V GND GND NOTE Do not connect the AUI port on a Model 2813SA hub directly to the AUI port on an Ethernet station 1 8 15 ...

Страница 118: ...wire 4 Not used by 10BASE T Not used by 10BASE T 5 Not used by 10BASE T Not used by 10BASE T 6 RD Receive from UTP wire TD Transmit to UTP wire 7 Not used by 10BASE T Not used by 10BASE T 8 Not used by 10BASE T Not used by 10BASE T Table C 3 RS 232 interface port pin assignments DB 25 plug Connector Pin Function Direction 2 Transmit data from Model 281xSA hub 3 Receive data to Model 281xSA hub 4 R...

Страница 119: ...ce network follow these steps 1 Set up the modem following instructions in the user s guide for the modem a Power up the modem b Configure the modem Be sure to set auto answering ON c Connect the modem to telephone line through an RJ 11 jack 2 Connect the modem to the Model 281xSA hub a Connect the plug on the RS 232 serial communications cable to the socket on the modem b Connect the socket on th...

Страница 120: ...ws the pin assignments for the service port on the Model 281xSA hub Table C 4 Service port pin assignments DB 9 plug Connector Pin Function Direction 2 Transmit data from Model 281xSA hub 3 Receive data to Model 281xSA hub 5 Signal ground 1 5 6 9 DB 9 3166 3 ...

Страница 121: ... the Model 281xSA hub transmits either data or an idle signal which is called TP_IDL twisted pair idle signal TP_IDL is transmitted in the absence of data and consists of a repetitive sequence of 100 nanosecond ns pulses occurring every 16 milliseconds ms The 100 ns pulses are called Link Test Pulses LTPs All Model 281xSA hub ports monitor their receive wire pair for data and LTP activity If neith...

Страница 122: ...rt is being monitored two conditions may occur If the port receives one normal data packet no inversion wire polarity is considered good and the monitoring for that port stops until either the power up sequence or no link status occurs If the port receives either two consecutive inverted data packets or six consecutive inverted link test pulses the automatic polarity correction function is enabled...

Страница 123: ... host portions of the address For this discussion consider a network to be a collection of computers hosts that have the same network field value in their Internet addresses The Class A Internet address format see Figure F 1 uses the highest eight bits as the network field and sets the highest priority bit to 0 zero The remaining 24 bits form the host field Only 128 Class A networks can exist but ...

Страница 124: ...s reserved for future use In Class E addresses the four highest order bits are set to 1 1 1 1 The router currently ignores the Class D and Class E Internet addresses except for the global broadcast address 255 255 255 255 Internet Address Notation Internet addresses are written as four decimal numbers for example 255 255 255 255 Each decimal number represents an 8 bit octet When strung together th...

Страница 125: ...xample the Class C address 0 0 0 234 refers to a particular host If the bits in the host portion of an address are all 1 that address refers to all hosts on the network specified in the network portion of the address For example the Class B address 128 1 255 255 refers to all hosts on the 128 1 0 0 network Remember that an octet of ones becomes the decimal number 255 Because of these conventions d...

Страница 126: ... between these networks delivering them to their final destination or to another router A router to router transmission is called a hop To begin the routing process the router examines the network number of the destination address Using this number as a key the router locates applicable routing information in its routing table The router uses this routing information to send the packet to its fina...

Страница 127: ...of a network address This mask is a 32 bit Internet address written in dotted decimal notation with all ones in the network and subnet portions of the address For the example in Figure F 4 the subnet mask is 255 255 248 0 Table F 2 shows the subnet masks you can use to divide an octet into subnet and host fields The subnet field can consist of any number of the host field bits you do not need to u...

Страница 128: ...vides an example of a complete Model 281xSA hub configuration file The meanings of the data fields are described in the next section Configuration Parameters The IP addresses for default router and trap receivers have been left as dummies xxx xxx xxx xxx in the sample files so as not to accidentally use a real IP address You must replace the dummy sequences with real addresses appropriate to your ...

Страница 129: ... xxx xxx xxx xxx For example default router 0 0 0 0 Specify the secondary default router for this NMM secondary default router xxx xxx xxx xxx Specify the router address for this NMM s TFTP request boot router xxx xxx xxx xxx Enable or disable the automatic discovery of available default router s Valid entries are on and off Default is on For example ping router on Specify the time interval of pin...

Страница 130: ...rite operations Specifying no community string will default to private for read and writable objects For example write community private Enter the list of IP trap receivers along with their community strings and ageout times in seconds The maximum number is 42 949 672 seconds approx 497 days Specifying no ageout time defaults to indefinite time Specify only one entry pair per line up to a maximum ...

Страница 131: ... s configuration information eeprom configures the NMM to use data stored in NVRAM for local loading Default is eeprom For example boot mode eeprom Specify the management protocol for this NMM Valid choices are IP_IPX IP and IPX Default is IP_IPX For example management protocol IP_IPX Specify the boot protocol for this NMM Valid choices are AUTO IP IPX and IP_IPX Default is AUTO For example boot p...

Страница 132: ...87654 2 5 node 000081111111 2 6 node 000082222222 2 7 node 000083333333 2 8 Wild card notation If slot or port is either 0 or blank that entry will be treated as a wild card For example this wild card entry specifies all ports associated with the concentrator node 1234567890ab This wild card entry also specifies all ports associated with the concentrator node 1234567890ab 0 0 This wild card entry ...

Страница 133: ...iolation occurs do nothing port 4 12 2 This port level example is used to check slot 2 port 3 If address violation occurs send trap and partition port port 2 3 5 This slot level example is used to check slot 5 and partition that port if address violation occurs slot 5 4 This slot level example is used to check slot 3 and send trap and partition that port if address violation occurs slot 3 5 This c...

Страница 134: ...d packets ratio CN condition which is one of the following depending on TY cross Trigger alarm when actual value crosses set value over Trigger alarm when actual value is greater than set value over rate Trigger alarm when actual value second is greater than set value second link on Trigger alarm when port link status is on link off Trigger alarm when port link status is off over rate Actual value...

Страница 135: ...conc 0 0 crc error packets over 1000 trap only 10 This sample threshold entry is number 2 in the table It checks slot 3 for 200 good bytes in 10 seconds When the counter crosses 200 it sends a trap and partitions the slot threshold 2 slot 3 0 good bytes cross 200 trap partition slot 10 Enable or disable automatic network topology build up Valid entries are on and off Default is on For example hell...

Страница 136: ... always interpreted as a decimal number These are the configuration file parameters filename or drive directory filename The pathname and filename for the Model 281xSA hub image file This parameter must be the first uncommented line in the configuration file You may include the drive as part of the path netmask ip_address The local subnet mask for this Model 281xSA hub up to 12 numeric characters ...

Страница 137: ...lt is none boot router ip_address The address of the router for this hub s TFTP request ping router on off Enables or disables the ability of the Model 281xSA hub to issue an Internet Control Message Protocol ICMP echo ping to the available default routers Valid entries are off and on Default setting is on ping time nn Specifies the time interval of pinging router s in seconds Maximum number is 42...

Страница 138: ... that gives the unique hub identification If the configuration file contains no entry for this parameter the default is the string SYNOPT followed by the last six digits of the hub MAC address syscontact string The name and phone number of the administrator or contact person for the hub 64 alphanumeric characters maximum If the configuration file contains no entry for this parameter the default is...

Страница 139: ...nd the 12 hexadecimal characters of the node address The trap community string parameter is similar to the read community keyword it can be any ASCII string up to a maximum of 20 alphanumeric characters If you enter an ipxaddress with no trap community the default string is public The age out timer specifies the length of time in seconds that an entry remains in the IPX trap receiver table authent...

Страница 140: ...t time If the configuration file contains no entry for this parameter the default is no save trap interval xxxx Specifies the time interval of traps sent out for existing predefined conditions The valid range is 10 to 3600 seconds in 10 second increments Default value is 10 portlife xx Specifies the lifetime of a node list entry in seconds The maximum value is 42 949 672 seconds approximately 497 ...

Страница 141: ...t for the Allowed Nodes feature is Off to enable the feature and select a level uncomment the appropriate line in the configuration file You can select only one level at a time port slot port action slot slot action conc action These three keywords specify actions to be taken when a security violation occurs either at a specific port identified by both slot number and port number at a particular s...

Страница 142: ...multicast packets broadcast packets short events source address changes data rate mismatches network errors backoff errors and ratios of certain errors to good packets CN Threshold condition that triggers response or action specified by the AC field Response can be triggered each time the actual value crosses the set value when the actual value is greater than the set value when the actual value p...

Страница 143: ...by enabling or disabling the concentrator s hello message Valid choices are on and off The default is on rmon max host xxx Specifies the maximum number of hosts that will be collected by the agent on an interface on behalf of each RMON hostControlEntry in the RMON host group The number is a value between 100 and 2048 inclusive The default is 100 ...

Страница 144: ...b is performing an internal hardware diagnostic check BOOT System is trying to obtain boot information LOAD System is loading the configuration file or image file INIT System image code is initializing itself CNMI System is initializing the cascade network management interface CNMI to other cluster attached hubs PART System is setting the partition status determined by data stored in NVRAM DNLD Sy...

Страница 145: ...n display freezes Service Port Boot Messages The messages listed in this section are associated with conditions that occur while the Model 281xSA hub is booting or while you are using the boot configuration menus to change boot configuration parameter values You should only see these messages before the Model 281xSA hub image code is loaded TFTP Error and Information Messages The messages in this ...

Страница 146: ...ound it was the wrong image file or the server IP address was incorrect Image load Err Netload fmt start addr Image param block start addr Netload addr hexnum Image Param block hexnum The image code was successfully downloaded but the image is not valid The most likely cause is an invalid image file on the server Incorrect Image for platform The image code was successfully downloaded but the image...

Страница 147: ...server available try booting from it TFTP block shorter than four bytes The boot firmware has received an invalid TFTP packet The server TFTP software may be malfunctioning If you have another server available try booting from it TFTP error received from remote host Remote Error string from server The boot server sent an error message to the Model 281xSA hub firmware A typical remote error would b...

Страница 148: ...cceeds continue to use the NMM If the error repeats contact the Customer Service department of the organization from which you purchased your System 2000 equipment Invalid flash checksum The flash memory checksum 32 bits is checked at program startup power up time This failure means that the local image in flash memory is invalid The Model 281xSA hub firmware automatically sets the image load mode...

Страница 149: ... an IPX node address that was not in the correct form It should contain only hexadecimal digits Segment number has to be exactly 8 hexadecimal digits hit space to continue You have entered an IPX segment number that is not a correct length Segment number has to be hexadecimal number hit space to continue You have entered an IPX segment number that is not in the correct form It should contain only ...

Страница 150: ...itions that occur while you are using the downloaded agent configuration file to change configuration parameter values You should see these messages only after the Model 281xSA hub image code has loaded authentication traps Unknown argument xxxx ignored An unknown parameter is specified for the authentication traps keyword in the configuration file In this case the system defaults to authenticatio...

Страница 151: ...ocol Unknown argument xxxxx ignored You have entered a parameter value other than those allowed for this keyword The system will use the default value for the specified keyword boot mode Unknown argument xxxxx ignored You have entered a parameter value other than those allowed for this keyword The system will use the default value for the specified keyword Colon missing between network and host in...

Страница 152: ...mode keyword in the configuration file The system will use the default value for this parameter IPX trap table is full Max of 10 The IPX trap receiver table is full Local image does not exist image load mode argument xxxxx ignored The image load mode keyword has been set to local only or remote with local backup when the local image is not present locally This failure might be due to a flash EPROM...

Страница 153: ...wn argument xxxxx ignored You have entered a parameter value other than those allowed for this keyword The system will use the default value for the specified keyword trap table is full Max of 10 The IP trap receiver table is full Unknown command xxxxx ignored An unknown agent configuration keyword has been found in the downloaded agent configuration file The system ignores invalid keywords ...

Страница 154: ...g a SIMM Setting the DRAM configuration jumpers Reinstalling the cover Verifying installation CAUTION System 2000 equipment uses electronic components that are sensitive to static electricity Static discharge from your clothing or other fixtures around you can damage these components You should take all possible precautions to prevent static discharge damage when working with printed circuit board...

Страница 155: ...ou are upgrading the memory in a hub that has been in operation you should take the necessary precautions to ensure that users sessions are not disrupted and that appropriate safety measures have been followed Before beginning the upgrade follow these steps 1 Instruct network users to save their work and log out of active session applications 2 Turn off the power to the concentrator 3 Disconnect t...

Страница 156: ...must remove the cover from the Model 281xSA hub To remove the cover follow these steps 1 Using the 1 Phillips screwdriver remove 3 screws from each side and 6 screws from the rear of the hub see Figure I 1 Figure I 1 Cover retaining screws EXPANSION 2 EXPANSION 3 EXPANSION 4 EXPANSION 5 3052 ...

Страница 157: ... cover slide the cover toward the rear of the hub approximately 1 2 inch see Figure I 2 Figure I 2 Removing the hub cover 3 Lift the cover straight up and remove it from the hub Set the cover aside 1 EXPANSION 2 EXPANSION 3 EXPANSION 4 EXPANSION 5 1 2 2 3053 ...

Страница 158: ...currently three SIMM capacities that can be installed on the Model 281xSA hub see Table I 1 Table I 1 DRAM SIMM capacities and types SIMM capacity and type Memory device type SIMM manufacturer SIMM part number 2 MB 2 sides 512 Kb 32 70 ns Texas Instruments Motorola NEC Micron TM512CBK32 70 MCM32512SG70 MC 42512A32F 70 MT16D51232G 7 4 MB 1 side 1 Mb 32 70 ns Texas Instruments Motorola NEC Hitachi M...

Страница 159: ...ou insert the SIMM into the empty socket vertically and then tilt the SIMM back until it snaps into the socket Figure I 3 SIMM location 2 Remove the SIMM that is already installed in the socket see Figure I 4 CAUTION If you do not wear a discharge leash to free yourself of static before touching the circuit board or the SIMM free yourself of static by touching the metal of the chassis before handl...

Страница 160: ...M from the spring latches the SIMM ejects from the locking studs on the socket and can be easily removed b Tilt the SIMM to its vertical position and lift it out of the socket c Note the location and orientation of the SIMM guide notch on the left end of the SIMM 4820 Remove SIMM at 90 angle Pull up 2 Pull tabs outward and SIMM forward 1 Guide notch ...

Страница 161: ...istatic bag or set it on an antistatic mat 3 Install the replacement SIMM see Figure I 5 Figure I 5 Installing a SIMM a Hold the replacement SIMM by its top corners with the guide notch toward the bottom edge of the NMM b Align the SIMM vertically above the socket and lower the SIMM gently into the socket 4821 Insert SIMM at 90 angle Press down 1 Press back until SIMM snaps into place 2 Guide notc...

Страница 162: ... NOTE You may feel a slight resistance as the SIMM comes to its locked position If the SIMM does not lock do not force it Remove the SIMM reinsert it wiggle it gently as you press it into the socket and try to tilt it into its locked position It is very easy to damage the SIMM socket by forcing a SIMM into its locked position NOTE The hub self tests include an optional exhaustive DRAM self test Th...

Страница 163: ...I 6 DRAM jumpers Set the jumpers at locations JP1 and JP2 to match the memory configuration you have installed as shown in Table I 2 Other jumpers on the board are set at the factory and should not be changed Table I 2 Jumper settings for total memory Total Memory JP1 position JP2 position 2 MB default 1 2 2 3 4 MB 2 3 1 2 8 MB 1 2 1 2 JP1 JP1 JP1 JP2 JP2 JP2 JP1 JP2 Options 2M 4M 8M 4858 Front of...

Страница 164: ... follow these steps 1 Set the cover over the top of the hub making sure the back edge of the cover clears the expansion ports on the rear panel of the hub see Figure I 7 Figure I 7 Reinstalling the cover 2 Holding the sides of the cover slide the cover toward the front of the hub until the cover engages with the chassis edges 2 EXPANSION 2 EXPANSION 3 EXPANSION 4 EXPANSION 5 2 1 1 3053 1 ...

Страница 165: ...apter 2 Installing the Model 281xSA Hub To verify correct hub operation follow these steps 1 Connect the power cord first to the Model 281xSA hub and then to a power outlet 2 Turn on the power to the hub 3 Check the LEDs and system operation display as described in Appendix B LEDs and Switches NOTE Be careful of the ribbon cables that run between boards at the side of the hub If the ribbon cables ...

Страница 166: ...nu 4 44 boot protocol setting 4 16 boot sequence 4 7 4 8 BootP server configuration process 4 2 IP address 4 23 searching for 4 6 with IPX management 4 11 brackets rack mounting 2 7 C cable AUI 3 16 expansion 3 12 3 13 fiber 3 18 for connecting a service port terminal 4 3 RS 232 4 3 STP 3 7 UTP 3 14 cable lengths fiber optic cable 3 18 UTP 3 3 3 7 3 14 cluster configuration connecting 3 12 3 13 nu...

Страница 167: ...rofile parameters 4 28 4 43 Set protocol parameters 4 28 4 29 Set read community 4 35 Set read write community 4 35 Set router s IP address 4 33 Set secondary default router s IP address 4 33 Set security level 4 42 Set security parameters 4 28 4 41 Set server s IP address 4 23 Set SNMP parameters 4 28 4 34 Set subnet mask 4 25 4 32 System configuration menu 4 19 4 21 Toggle all RAM tests 4 22 Tog...

Страница 168: ...image load mode setting 4 18 installation hub in a rack 2 7 2 9 on a shelf 2 5 2 6 on a wall 2 10 2 13 rack mounting brackets 2 7 requirements 2 2 tool requirements 2 4 wall mounting brackets 2 10 interconnect port 3 2 3 21 Internet addresses classes of F 1 IP address boot router 4 23 BootP server 4 23 Model 281xSA hub 4 25 stored in NVRAM 4 18 IP Configuration menu 4 24 IP configuration menu comm...

Страница 169: ... switch setting 3 8 3 19 memory DRAM I 5 DRAM configuration switches I 10 menus Boot File Configuration menu 4 22 Boot main menu 4 9 4 16 Boot Parameters menu 4 44 IP Configuration menu 4 24 IP Parameters menu 4 31 IP SNMP Trap Receivers menu 4 36 IPX Configuration menu 4 25 IPX Parameters menu 4 33 IPX SNMP Trap Receivers menu 4 37 Model 281xSA main menu 4 27 Out of Band Parameters menu 4 40 Prof...

Страница 170: ...stalling 2 7 repeaters Ethernet 1 3 3 2 IEEE limits 1 3 in a cluster 3 12 limits 3 14 requirements for service port terminal 4 3 installation environmental 2 2 site 2 2 tools 2 4 wall installation 2 4 Reset 281xSA command 4 29 Reset button 1 2 B 4 Reset management module command 4 19 Reset NVRAM to factory defaults command 4 19 Restart 281xSA command 4 29 restrictions cable length UTP 3 3 on repea...

Страница 171: ...ite community command 4 35 Set router s IP address command 4 33 Set secondary default router s IP address command 4 33 Set security level command 4 42 Set security parameters command 4 28 4 41 Set Security Parameters menu 4 42 Set server s IP address command 4 23 Set SNMP parameters command 4 28 4 34 Set subnet mask command 4 25 4 32 Show Nodes Find Nodes 1 6 signal inversion 3 10 signal quality e...

Страница 172: ...ceiver connecting 3 4 3 6 using 3 15 trap receiver age out time 4 37 4 39 troubleshooting 4 5 U unmanaged network 3 2 UTP cable connecting 3 9 length restrictions 3 3 3 7 3 14 W wall installation preparing for 2 11 required materials 2 4 wall mounting brackets installing 2 10 workgroups 3 2 Write boot config to NVRAM command 4 20 4 24 4 26 Write values to EEPROM command 4 28 ...

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