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CyberSWITCH 100 Hardware Features

44 CyberSWITCH 100 Advanced User Information

Configuration Switches

The Configuration Switches are located under the CONFIG label on the rear panel of the router. 
You may need to alter the Configuration Switches for upgrading software, for troubleshooting with 
a service representative, for some ISDN configurations or if you must reset the login password.

More recent models have a six-segment switch. See the switch information tables which follow.

Four -segment Switches —

Switches 1 and 2 are set in the UP position for the normal operation 

of the router. If the switches are not set in the normal positions (as shown in 

Table 10

) or if you 

change the settings, reset them to continue normal operation. Switches 3 and 4 are for ISDN S/T 
Interface termination.

Table 10

 describes each Configuration Switch when in the UP (OFF) or DOWN (ON) position.

With both switches 1 and 2 in the DOWN (ON) position after the router has booted, the login 
password is overridden allowing a forgotten password to be re-entered.

a.  Switches 3 and 4 are shipped in the DOWN position. Switches 3 and 4 must be 

changed together. These switches should be DOWN to terminate the bus when 
the router is used in a point-to-point S/T bus configuration, the router is on one 
end of a multi-point configuration or, in the U.S. with internal NT1 there are no 
other devices on the S/T bus. These switches should only be UP when the 
router is in a multi-point S/T bus configuration and is not at the end of the bus.

Table 10

Four-segment Switch Settings

Configuration Switch Settings

Description

Switch 1

UP (Normal) 
DOWN

Normal Router Operation
Mode Maintenance Mode

Switch 2

UP (Normal) 
DOWN

Automatic boot
Manual boot

Switch 3

a

 

UP
DOWN (Normal)

Disables terminators on the S/T interface
Enables terminators on the S/T interface

Switch 4

UP
DOWN (Normal)

Disables terminators on the S/T interface
Enables terminators on the S/T interface

Summary of Contents for CyberSWITCH CSX101

Page 1: ...CyberSWITCH 100 FAMILY INFORMATION PWR LAN LINE CH1 CH2 NT1 P N 9031944 01 September 1997 ...

Page 2: ......

Page 3: ...sted and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio ...

Page 4: ...Notice ii CyberSWITCH 100 Advanced User Information VCCI Notice ...

Page 5: ... UTILIZING THE ENCLOSED PRODUCT YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT WHICH INCLUDES THE LICENSE AND THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT PROMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND Cabletron Software Program License 1 LICENSE You have the right to use only the one 1 cop...

Page 6: ...AMAGES OR ON THE DURATION OR LIMITATION OF IMPLIED WARRANTIES IN SOME INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU United States Government Restricted Rights The enclosed product a was developed solely at private expense b contains restricted computer software submitted with restricted rights in accordance with Section 52227 19 a through d of the Commercial Computer Software...

Page 7: ...lephone Switch Parameters 5 CHAPTER 2 ABOUT THE CYBERSWITCH 100 ROUTER 9 CyberSWITCH 100 Hardware 10 ISDN WAN Connection 10 POTS Analog Telephone Connection 10 CyberSWITCH 100 Software Support 10 IEEE 802 3 Ethernet 11 Point to Point Protocol PPP 11 PAP and CHAP Security 11 ISDN 12 Telephone Switch Support 12 Bridging and Routing 13 IP and IPX Routing 14 Network Information Diagrams 14 Bridging an...

Page 8: ... Information 23 Remote Connections 31 CHAPTER 4 CYBERSWITCH 100 HARDWARE FEATURES 39 Front Panel 39 Rear Panel 41 Port Descriptions 42 Configuration Switches 44 CHAPTER 5 TROUBLESHOOTING 47 Investigating Hardware Installation Problems 47 Investigating Software Configuration Problems 48 How to Obtain Technical Support 50 Getting Help 51 APPENDIX A HARDWARE SPECIFICATIONS 53 APPENDIX B GLOSSARY 55 ...

Page 9: ...ncluding voice data fax and video Multiple devices can be linked to a single ISDN connection each having its own telephone number Two or more channels can be combined into a single larger transmission pipe offering variable transmission speeds How to Use This Guide Below is a list of the chapters comprising this guide with brief explanations of their content Chapter 1 ISDN Line Ordering and Config...

Page 10: ...l Calls the reader s attention to any item of information that may be of special importance TIP Tip symbol Conveys helpful hints concerning procedures or actions CAUTION Caution symbol Contains information essential to avoid damage to the equipment Warning symbol Warns against an action that could result in equipment damage personal injury or death ...

Page 11: ...c The serial and revision numbers of all involved Cabletron Systems products in the network A description of your network environment layout cable type etc Network load and frame size at the time of trouble if known The device history i e have you returned the device before is this a recurring problem etc Any previous Return Material Authorization RMA numbers Phone 603 332 9400 Internet mail suppo...

Page 12: ...Preface x CyberSWITCH 100 Advanced User Information ...

Page 13: ...e capabilities of the CyberSWITCH 100 You must give the service provider the required switch settings parameters for the provider s central office switch Consult with your service provider at least two months before you require the installation and use of the ISDN service Complete the following steps to arrange your ISDN service 1 Contact the service provider and determine what type of ISDN centra...

Page 14: ...der The Basic Rate Interface ISDN line provides two full duplex 64 Kbps B channels used for voice data fax etc and one full duplex 16 Kbps channel used for signaling Each B channel can be used for a call i e two calls can occur at the same time Services vary from individual service providers The service provider requires some information from you about your configuration You must provide your serv...

Page 15: ... are the same wires that exist for analog telephone service In most cases the same wires can be used for the ISDN line The EIA TIA standard for wiring is Unshielded Twisted Pair UTP cable Category 3 or above 24 AWG American Wire Gauge The standard also recommends using 8 contact RJ45 jacks for new ISDN service installation No special conditioning is required in some cases conditioning must be remo...

Page 16: ...e assigned by your telephone company Some digital central office switches AT T 5ESS Custom require only a single DN Number for your CSX100 Others like the AT T 5ESS with the NT1 service or the Northern Telecom DMS 100 with the NT1 service require a separate number for each B channel Service Profile Identifiers SPIDs also assigned by the ISDN service provider identify the services and features that...

Page 17: ...vice provider to ensure proper configuration of the ISDN line Table 1 National ISDN 1 NI 1 Parameters NOTE ISDN Switch Parameters Value B1 Circuit Switched Data Voice B2 Circuit Switched Data Voice D Signaling Only Multipoint Yes Terminal Type A Display Off TEI Dynamic MTERM 1 MAXB CHL 2 ACT USR Y CSD 2 CSD CHL Any CSD Limit 2 CA Pref 1 EKTS No Nail Up None National ISDN NI 1 is a specification re...

Page 18: ...Table 2 AT T 5ESS with Custom Software ISDN Switch Parameters Value B1 Circuit Switched Data Voice B2 Circuit Switched Data Voice D Signaling Only Multipoint No Terminal Type A Display Off TEI Dynamic MTERM 1 MAXB CHL 2 ACT USR Y CSD 2 CSD CHL Any CSD Limit 2 CA Pref 1 Nail Up None ...

Page 19: ...dvanced User Information 7 Table 3 Northern Telecom DMS 100 ISDN Switch Parameters Value B1 Circuit Switched Data Voice B2 Circuit Switched Data Voice D Signaling Only EKTS No Ringing Indicator No Release Key No PVER 01 TEI Dynamic MAXKEYS 64 Nail Up None ...

Page 20: ...ISDN Line Ordering and Configuration 8 CyberSWITCH 100 Advanced User Information ...

Page 21: ...ng and Netware IPX Routing between Ethernet Local Area Networks LANs across an ISDN Wide Area Network WAN resource The CyberSWITCH 100 can also provide two line analog support for standard telephone facsimile and answering machine equipment over the ISDN line Analog line service is supported over the ISDN B channels affording simultaneous voice fax and data communications The CyberSWITCH 100 manag...

Page 22: ...nalog device ports for connecting telephone facsimile and analog modem equipment Each port can be used to connect multiple devices The maximum length for each analog line is 100 feet 30 meters CyberSWITCH 100 Software Support The CyberSWITCH 100 supports IEEE 802 1d bridging TCP IP routing and IPX Routing as an option Wide Area Networking includes synchronous Point to Point Protocol in Single Link...

Page 23: ...ptimize bandwidth usage The STAC Electronics Stacker LZS Compression Protocol is supported over PPP providing up to 4 1 data compression PAP and CHAP Security The CyberSWITCH 100 supports the Password Authentication Protocol PAP and Challenge Handshake Authentication Protocol CHAP under PPP PAP provides verification of passwords between routers using a 2 way handshake One router peer sends its sys...

Page 24: ...nsferring data Voice is transferred using either B channel If the two B channels are used for separate connections each provides up to 64 Kbps transfer rates Both channels can be used together to provide uncompressed data transfer at up to 128 Kbps The CyberSWITCH 100 can also transfer compressed data at up to 512 Kbps data rate after decompression A Network Terminator device NT1 provides the inte...

Page 25: ...segments A bridge extends the physical reach of networks beyond the limits of each LAN segment Filters are used to increase network security in bridged networks Routing Routing provides a way to transfer data from source to destination over different LAN and WAN links using one or more network protocol formats Routing relies on routing address tables to determine the best path for each packet Rout...

Page 26: ...eceived IP and IPX Routing IP Routing IP rrouting support provides the ability to process TCP IP frames at the network layer for routing IP routing support includes the Routing Information Protocol RIP that allows the exchange of routing information on a TCP IP network The router receives and broadcasts RIP messages to adjacent routers and workstations Since IP sends out periodic RIP frames that c...

Page 27: ...owed to flow on the WAN link TCP IP Default Route One default route can be designated in the routing table for all traffic that cannot be directed to other specific routes The default route is specified as 0 0 0 0 255 255 255 255 There can be only one default route specified for all the remote database entries Figure 2 Network Information Diagram NETWORK INFORMATION LAYOUT ETHERNET LAN IP ADDRESS ...

Page 28: ...red If a Local WAN IP address is explicitly defined the router will not as a rule accept another local address from the remote end In numbered mode without an explicit Local WAN IP address this address can be negotiated to a different value by the remote end If the remote router supports unnumbered mode neither address needs to be specified Figure 3 below is a simple example of an unnumbered mode ...

Page 29: ...table must be seeded statically so that it dials out to the appropriate remote router when IPX traffic is targeted to network segments or servers beyond that remote router After the link is established RIP update packets dynamically add to the routing information table in the CyberSWITCH 100 Seeding the routing table is not necessary when a CyberSWITCH 100 never dials out it will discover routes b...

Page 30: ...ITCH 100 never dials out it will discover remote services beyond the calling router as soon as SAP broadcasts arrive provided the remote router supports IPX Figure 6 IPX Network Information Layout NETWORK INFORMATION LAYOUT ETHERNET LAN IPX NETWORK NUMBER CyberSWITCH 100 SYSTEM NAME PAP CHAP PASSWORD ISDN LINE SPIDs DNs PHONE NUMBERS ISDN WAN LINK IPX NETWORK NUMBER REMOTE ISDN PHONE NUMBERS REMOT...

Page 31: ...rnal and external node numbers The internal node number is a logical number assigned by the system administrator to the server The external node number is the MAC address of the server When adding SAP services to the SAP table internal node numbers are used IPX Routing Novell NetWare Internetwork Packet Exchange IPX routing support provides the ability to process IPX frames at the Network layer Th...

Page 32: ...d on address protocol or data content Common uses are to prevent access to remote networks control unauthorized access to the local network and limit unnecessary traffic Bandwidth Optimization Features The CyberSWITCH 100 provides a number of features to maximize throughput and minimize use of WAN resources Data Compression The CyberSWITCH 100 supports data compression of up to 4 1 allowing data t...

Page 33: ...s also used internally for configuration of the router The active SNMP agent within the router accepts SNMP requests for status statistics and configuration updates Communication with the SNMP agent occurs over the LAN or WAN connection Any management application using SNMP over CDP IP has access to the local SNMP agent The following MIBs are supported MIB II Bridge MIB Ethernet MIB IP Forwarding ...

Page 34: ...About the CyberSWITCH 100 Router 22 CyberSWITCH 100 Advanced User Information ...

Page 35: ...ous QuickSET Custom Step by Step Configuration screens The location of all of the remote routers to which this device may connect are added to a database called the remote router database that resides in the CyberSWITCH 100 Each remote router entry in the database defines the connection parameters security features route addressing and bridging function for the remote router Routing and bridging a...

Page 36: ... Internet Service Provider or network administrator has given you a Default Gateway address enter it in the Default Gateway window The Default Gateway is a default address that specifies a destination for all packets whose destination is not specified in the routing table QuickSET Password You must choose a QuickSET Password for your CyberSWITCH You will use this password when you run QuickSET to ...

Page 37: ...teristics of your ISDN line A SPID is often made up of the phone number with some additional digits The CyberSWITCH can accept two SPID numbers Your service provider may provide you with none one or two SPIDs If you have not been provided a SPID leave this field blank ISDN Settings Use the checkboxes to enable Incoming calls Outgoing calls and to lock the line speed at 56 Kbps These enable functio...

Page 38: ... configuration panel to appear see Figure 9 on the following page This window lets you configure Dynamic Host Configuration Protocol for your CyberSWITCH Your CyberSWITCH acting as a DHCP server will be able to assign IP Addresses dynamically to PC s and devices on it s subnet from a list of consecutive IP Addresses You must have selected the DHCP Server is Enabled checkbox on the DHCP Settings pa...

Page 39: ...dress that packets not on your local subnet will be sent to normally the IP Address of your CyberSWITCH 100 DNS Servers The DNS Servers windows provide for two Domain Name Servers Enter the IP Address of the servers in the respective windows The Domain Name is entered in the Domain Name window WINs Servers Windows Internet Name Service WINS is a dynamic naming service that resolves NETBIOS compute...

Page 40: ...entral office voice services to control the analog lines Figure 10 below shows the POTS Service Configuration panel Figure 10 POTS Service Configuration Panel Allow POTS Usage Click the Enable check box to enable the POTS interface Select the POTS option you wish to enable from the three radio buttons A brief description of the function of these radio buttons follows All Calls You can call out and...

Page 41: ...ver Voice will not preempt data You will have to wait for an unused B channel Note An incoming call may not always be forwarded from the central office if two B channels are already in use for data calls You must subscribe to a service called Additional Call Offering or ACO for the voice call to be forwarded to the CyberSWITCH Automatic Preemption Automatic Preemption will automatically bring down...

Page 42: ...reen In Manual Preemption mode when you pick up the receiver you will hear a special tone if both B channels are busy You can then hit the flash key to manually preempt data You can select IP and IPX Routing from QuickSET using the routing enable screen shown below in Figure 11 Figure 11 QuickSET IP and IPX Routing Enable Screen IP Routing Click this radio button to enable IP Routing in your Cyber...

Page 43: ...rSWITCH s ability to detect and respond to any RIP packets IPX Routing Click this radio button to enable IPX Routing in your CyberSWITCH Frame Type Select the Frame Type for IPX Routing The options are Ethernet II Ethernet 802 2 and Ethernet 802 3 Remote Connections The QuickSET Remote Connections Panel shown in Figure 12 below is used to set up any remote devices you wish your CyberSWITCH to conn...

Page 44: ...e the Caller ID Button to access a list of Caller ID Numbers You can use the Add and Delet buttons to add ot delete entries in the Caller ID list Bandwidth Management The Bandwidth Management panel is where you set up parameters that control the way your CyberSWITCH reacts to excursions of bandwidth utilization above limits that you preset Using Bandwidth Management can minimize dial up costs and ...

Page 45: ...e connection for inbound bridging For a detailed description of bridging see the Bridging and Routing section in Chapter 2 You can select only one remote device database entry for Outbound Bridging a default location to which to send packets Select the Spanning Tree Protocol to use the Spanning Tree algorithm to check for bridging loops and other anomalies Figure 13 below shows the IP and IPX Rout...

Page 46: ...LAN over the ISDN connection IPX Routing Configuration Panel The IPX Routing Configuration panel is used in conjunction with the Remote Connections panel to set up parameters for IPX routing Use the Add Route button and the Routing Table button to access the IPX Routing table entries Type the External IPX Network Number in the External Network window The IPX Server name description and type of IPX...

Page 47: ... destination Network Number in 1 18ths of a second Server Type This is a decimal number associated with Novell servers defining the server s function There are specific numbers for Print servers File servers etc Socket Number The Socket Number is a four digit number that refers to an application within the server node External WAN Network This is the number of the WAN link between your CyberSWITCH...

Page 48: ...he time it takes for a packet to reach the destination Network Number in 1 18ths of a second External Ethernet Network Number Enter the External Ethernet Network Number of your LAN link in the appropriate window The Advanced IP Settings panel is shown below in Figure 16 This panel is used in conjunction with the IP Routing Configuration panel to enable Network Address Translation and WAN RIP Proto...

Page 49: ...er the WAN RIP 1 Compatible This function allows your CyberSWITCH to listen to RIP type 1 and RIP type 2 packets but only broadcast RIP type 1 packets RIP 1 This function allows your CyberSWITCH to listen to and broadcast RIP type 1 packets only RIP 2 This function allows your CyberSWITCH to listen to and broadcast RIP type 2 packets only RIP Off Disables the CyberSWITCH s ability to detect and re...

Page 50: ...Planning Your Router s Configuration 38 CyberSWITCH 100 Advanced User Information ...

Page 51: ...Table 2 describes the states of the ISDN LEDs Line CH1 and CH2 Table 3 describes the states of the NT1 LED CSX103 and CSX105 models only Figure 17 Front Panel LEDs Table 4 LED Functions Indicator Description PWR Green Light indicates that power is applied to the unit LAN Indicates transmit activity on the Ethernet connection LINE LINE Channel Activity CH1 CH1 Channel Activity CH2 CH2 Channel Activ...

Page 52: ...by ON OFF OFF Dial Answer N A Fast Blinking Fast Blinking Send Receive Data N A Slow Blinking Slow Blinking Connected but Idle N A ON ON Table 6 NT1 Status NT1 State Condition applicable only on models with internal NT1 OFF Not connected to central office or error condition Fast Blinking U interface activation attempt between NT1 and central office Slow Blinking U interface active NT1 negotiating ...

Page 53: ...t CONFIG Configuration switches that control software execution See Switch information in this section POWER A standard AC power connector and ON OFF switch labeled l 0 ISDN U A port on the CSX103 and CSX105 ISDN U specifies the interface to the U loop The router has a built in NT1 See Table 8 for the ISDN port pinout 10 BASE T ON 1 2 3 4 CONFIG ISDN 100 120 200 240 VAC 2A MAX 50 60 Hz 1 0 10 BASE...

Page 54: ...provided along with a built in NT1 Additional ISDN TE equipment can be attached to this Network Termination NT configured S T jack See Table 8 for the ISDN port pinout POTS 1 2 Two ports on the CSX105 allow attachment of standard analog phone equipment See Table 9 for the POTS port pinout Port Descriptions Table 7 Ethernet Twisted Pair TPE Port Pin Number Signal Name 1 Twisted Pair Transmit 2 Twis...

Page 55: ...ot Connected 2 Not Connected Not Connected Not Connected 3 Transmit Receive Not Connected 4 Receive Transmit Transmit Receive 5 Receive Transmit Transmit Receive 6 Transmit Receive Not Connected 7 Not Connected Not Connected Not Connected 8 Not Connected Not Connected Not Connected Table 9 POTS Ports Pin Number Signal Name 1 Not Used 2 Not Used 3 Tip 4 Ring 5 Not Used 6 Not Used ...

Page 56: ...WN ON position With both switches 1 and 2 in the DOWN ON position after the router has booted the login password is overridden allowing a forgotten password to be re entered a Switches 3 and 4 are shipped in the DOWN position Switches 3 and 4 must be changed together These switches should be DOWN to terminate the bus when the router is used in a point to point S T bus configuration the router is o...

Page 57: ...es 3 and 4 are inoperative 6 segment Configuration Switch Settings Description Switch 1 UP DOWN default Disables terminators on S T Enables terminators on S T Switch 2 UP DOWN default Disables terminators on S T Enables terminators on S T Switch 3 N A No Function Switch 4 N A No Function Switch 5a UP default DOWN Normal Router operation mode Maintenance Mode Switch 6 UP default DOWN Automatic boot...

Page 58: ...erSWITCH 100 Configuration Switches 10 BASE T ON 1 2 3 4 CONFIG ISDN 100 120 200 240 VAC 2A MAX 50 60 Hz 1 0 10 BASE T ON 1 2 3 4 CONFIG ISDN S T 100 120 200 240 VAC 2A MAX 50 60 Hz 1 0 CSX101 CSX103 10 BASE T POTS 2 POTS 1 ON 1 2 3 4 CONFIG ISDN 100 120 200 240 VAC 2A MAX 50 60 Hz 1 0 CSX105 ...

Page 59: ...ve LEDs flash an error code Contact Cabletron Systems Technical Support ISDN NT1 CHANNEL LED IS OFF BLINKING SLOWLY This LED is only active if an NT1 is installed If the unit has an internal NT1 a problem is occurring in the connection to the network Examine the phone line cable for frays Check that each end is securely plugged in Contact the ISDN service provider to ensure the ISDN line is operat...

Page 60: ...ble negotiating SPIDs and DNs with the central office Investigating Software Configuration Problems Software problems usually occur when your software configuration contains incomplete or incorrect information CONNECTION TO CyberSWITCH 100 FAILS DURING SOFTWARE CONFIGURATION For a LAN connection verify that the IP address matches the IP address previously stored into the router s configuration You...

Page 61: ... new password 6 Store the configuration and reboot the router USER CANNOT COMMUNICATE WITH REMOTE NETWORK STATION Check that the ISDN line SPIDs and DNs if required are valid the telephone switch settings are correct and the line can be activated Verify that the ISDN phone numbers are correct for the remote router If you are not using the supplied ISDN cable check that the cables are pinned correc...

Page 62: ...t IPX Routing has been set on and the remote end is enabled for IPX routing Validate that the IPX WAN network number matches the WAN network number of the remote router Check that the IPX Routes network numbers hops and ticks seeded into the routing table for network segments and servers beyond the remote router are correct Check that IPX SAPs correctly identify the servers and applications on the...

Page 63: ... of the POST Test List of other equipment such as personal computers modems etc and third party software you are using including revision levels Getting Help If you need additional support related to this device or if you have any questions comments or suggestions concerning this manual contact Cabletron Systems Global Call Center By phone 603 332 9400 Monday Friday 8 A M 8 P M Eastern Time By Int...

Page 64: ...Troubleshooting 52 CyberSWITCH 100 Advanced User Information ...

Page 65: ...Ethernet port 10BASE T TPE RJ45 Other Interfaces AC Power Connector Processor Motorola MC68EN360 25 Mhz Width 8 4 inches 21 3 cm Height 1 7 inches 4 3 cm Depth 7 0 inches 17 8 cm Weight 1 5 lbs 0 68 kg Power Supply Built in power supply Voltage 100 120 Vac 220 240 Vac Frequency 50 60 Hz Power Consumption 15 Watts maximum Operating Temperature 40 105 F 5 40 C Humidity 20 80 non condensing ...

Page 66: ...Hardware Specifications 54 CyberSWITCH 100 Advanced User Information ...

Page 67: ...ode on the adjacent segment is passed across the bridge A bridge operates at Layer 2 of the OSI reference model B Channel In ISDN a full duplex 64 Kbps channel used for sending user data BRI Basic Rate Interface The ISDN interface providing two 64 Kbps B channels for voice data and video transmission and one 16 Kbps D channel for signaling and data transmission CHAP Challenge Handshake Authenticat...

Page 68: ...k traffic and act as a management and network security point where all traffic can be scrutinized Frame A group of data generated by Data Link Layer operation In Band Signaling Transmission within the frequency range used for data transmission i e results in use of bandwidth normally reserved for data IP Address Internet address A 32 bit address assigned to devices that participate in a network us...

Page 69: ...d receive data over both B channels in an ISDN basic rate interface connection NetWare A Network Operating System developed by Novell Inc providing shared access to files and other network services Network Layer Layer 3 of the OSI reference model that provides the protocol routing function Node Refers to a termination point for communication links entity that can access a network OSI Open System I...

Page 70: ...tination RS 232 EIA standard specifying the physical layer interface used to connect a device to communications media Serialization Frames Frames sent out by servers under IPX to check whether illegal copies of NetWare are in use on the network Service Advertising Protocol Protocol used in IPX for broadcasting information about services available on the network such as file servers CD ROM drives a...

Page 71: ...rams TELNET Internet standard protocol for remote terminal emulation that allows a user to remotely log in to another device and appear as if directly connected TFTP Trivial File Transfer Protocol A simplified version of the File Transfer Protocol FTP allowing for file transfer between computers over a network Transparent Bridging Bridging technique used in Ethernet networks that allows transfer o...

Page 72: ...Glossary 60 CyberSWITCH 100 Advanced User Information ...

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