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61202192L1-1

Express L768/L1.5 User Manual

105

Appendix E

Terminal Mode Commands

The Express L768/L1.5 supports a command line interface. All menu options
are configurable and readable from the terminal mode. Additional commands
are also available.

Menu Commands

Every menu item in the menu structure can be accessed through the terminal
mode interface. Terminal commands are as follows:

top_menu sub_menu1 sub_menu2 … config_item

Each config_item is entered as shown below.

TYPE:

ENTERED AS:

string

printable characters within double quotes

password

printable characters within double quotes

IP address

xx.xx.xx.xx (0..9) separated by ‘.’

Hex

xx:xx:xx:xx (0..9,a..f) separated by ‘:’

enum

sub-string or [#index]

unsigned

digits (0..9)

date

mm-dd-yyyy

time

hh:mm:ss

date/time

mm-dd-yyyy hh:mm:ss

activator

read only

list

followed by index with first record being 1

array

followed by index with first record being 1

Содержание Express L1.5

Страница 1: ...Express L768 and Express L1 5 HDSL Router Bridge USER MANUAL Express L768 1202192L1 Express L1 5 1202192L2 61202192L1 1B June 1998...

Страница 2: ...mark of ADTRAN Inc Macintosh is a registered trademark of Apple Computer Inc Novell NetWare and Internetwork Packet Exchange IPX are registered trademarks of Novell Inc Windows is a registered tradema...

Страница 3: ...sonnel For continued protection against risk of fire replace F1 with the same type and rating of fuse only 2A 250 V FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT This equipm...

Страница 4: ...iring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord Compliance with the above conditions may not prevent degradat...

Страница 5: ...L1 5 8 Factory Default 8 Bridging 8 IP Routing 9 IPX Routing 9 Concurrent Routing And Bridging 9 Network Address Translation Mode 9 Front Panel 10 Indicators 10 Rear Panel 11 Configuration 11 Security...

Страница 6: ...Es 25 WAN L2 Protocol 25 Configuration IP 26 IP IP Address 26 IP Subnet Mask 26 IP Default Gateway 26 IP Static Routes 27 Static Routes Active 27 Static Routes IP Address 27 Static Routes Subnet Mask...

Страница 7: ...rk 38 WAN IPX Bridge Frame Type 38 WAN IPX Bridge Seed Status 38 WAN IPX Bridge Triggered 38 Bridge Spanning Tree 38 Spanning Tree Mode 38 Spanning Tree Priority 39 Spanning Tree Maximum Age 39 Spanni...

Страница 8: ...apping DLCI 50 DLCI Mapping IP Map 50 Map Active 50 Map IARP 51 Map Far End IP Address 51 Map IP Netmask 51 Map Link IP Address 51 Map RIP Protocol 51 Map RIP Method 52 Map RIP Direction 52 IP Map NAT...

Страница 9: ...er 62 PPP Max Failure 62 PPP Profile Filters 62 Filters WAN to LAN In 62 Filters In Exceptions 63 Filters LAN to WAN Out 64 Filters Out Exceptions 64 Configuration Management 65 Management Telnet 65 T...

Страница 10: ...Status IP Stats 77 Test Menu 78 Test Menu Echo Request 78 Test Menu 2047 Loopback 78 Logs Menu 79 Logs Sys log Host 79 Logs PPP Log 79 PPP Log Active 80 PPP Log Wrap 80 PPP Log Level 80 PPP Log View 8...

Страница 11: ...tilities Exit 85 Chapter 4 Specification 87 Specifications and Features 87 Network Interface 87 Ethernet Interface LAN 87 Display 87 Environmental 87 Physical 87 Power 87 Appendix A Loop Status Messag...

Страница 12: ...Table of Contents viii Express L768 L1 5 User Manual 61202192L1 1...

Страница 13: ...Top Level Terminal Menu 16 Figure 3 2 Configuration System Info Screen 22 Figure 3 3 Configuration WAN Screen 24 Figure 3 4 Configuration IP Screen 26 Figure 3 5 Configuration IPX Screen 33 Figure 3 6...

Страница 14: ...List of Figures x Express L768 L1 5 User Manual 61202192L1 1...

Страница 15: ...61202192L1 1 Express L768 L1 5 User Manual xi List of Tables Table D A IBM AT Style EIA 232 Interface 103 Table D B RJ 45 HDSL BRI U 103 Table D C 10BaseT Ethernet 104...

Страница 16: ...List of Tables xii Express L768 L1 5 User Manual 61202192L1 1...

Страница 17: ...hen press Enter to display the top menu 3 Using the arrow keys and Enter key to navigate the menu go to the Con figuration WAN HDSL menu Enter the line mode as HTU C or HTU R Each end of an HDSL circu...

Страница 18: ...Quick Startup Guide 2 Express L768 L1 5 User Manual 61202192L1 1...

Страница 19: ...or 12 000 feet on 24 AWG wire without the need for loop conditioning or repeater installation The benefits HDSL offers over traditional T1 span lines represent large cost savings for the service provi...

Страница 20: ...two wire mode if the rate is 768K and below See Figure 1 1 for an illustration of the Express L768 L1 5 The 10BaseT con nector operates at 10 Mbits per second half duplex and accepts standard eth erne...

Страница 21: ...tagram Protocol UDP broadcasts are relayed to corporate LAN Client device can obtain the Internet Protocol IP address dynamically us ing Dynamic Host Configuration Protocol DHCP Compatible with popula...

Страница 22: ...mmuter Home Office Access to the corporate LAN Access to any other router within the Frame Relay Network User Datagram Protocol UDP broadcasts are relayed to corporate LAN FramePort 768 part no 110004...

Страница 23: ...press L768 L1 5 provides the following basic functions 1 LAN Bridge Bridging provides a point to point connection between two LANs The bridge learning function scans the source and destination me dia...

Страница 24: ...r packets can be PPP or Frame Relay RFC 1490 PPP allows a point to point connec tion whereas Frame Relay can provide up to ten permanent virtual cir cuits Routing and Bridging with the Express L768 L1...

Страница 25: ...and advertised using Novell s RIP and SAP Concurrent Routing And Bridging The Express L768 L1 5 can route IP and IPX as well as bridge non IP IPX packets simultaneously The PPP profile will by default...

Страница 26: ...integrity Illuminates when there is a good connection between the Express L768 L1 5 and the Hub NIC card LOOP LOOP1 Flashes when loop 1 pins 1 and 2 on RJ 45 is not in sync Solid when loop 1 is in syn...

Страница 27: ...transfers data up to 768 kbps over a two wire facility The Express L1 5 transfers data up to 1 536 Mbps over a four wire facility This type of service is a permanent connection between endpoints or be...

Страница 28: ...A RADIUS client can also be used The Telnet configuration can also be protected using the same authentication methods Each menu item in the Express L768 L1 5 has a security level asso ciated with it A...

Страница 29: ...ering T1 service directly to the pub lic D4 channel banks began to be used for T1 in corporate network topogra phies for voice The advances in computer development also created a demand for T1 data co...

Страница 30: ...ems HDSL satisfies the telco distance requirements without the use of repeaters LOCAL AREA NETWORK CONNECTION The Express L768 L1 5 has a 10BaseT connector that provides half duplex 10 Mbps operation...

Страница 31: ...ing menu the Main menu or top level menu is the access point to all other operations Each Main menu item has several functions and sub menus to identify and access specific parameters Figure 3 1 on pa...

Страница 32: ...nal submenus available through this pane are indicated by the and DATA symbols Left Pane Lists available menus Mode Describescurrent operating mode Loop Status Displays current status of HDSL line Rat...

Страница 33: ...d for performing diagnostic testing of the Express L768 L1 5 See the section Test Menu on page 78 for detailed information on the tests available Logs The Logs menu can be used for viewing the operati...

Страница 34: ...guration submenu so the path display shows Express XLT Config uration Moving Around Press Tab or the right arrow key to move the cursor from the left pane to the right pane Press Tab or the left arrow...

Страница 35: ...ime you pressed J Press J anytime you want to jump between these items Arrow Keys Selects items and moves between the left and right panes The left arrow key allows you to go back up the menu Enter Ac...

Страница 36: ...e list are copied For example if the cursor is over the Num field in the Frame Relay Mapping screen all of the information associated with the Map entry is copied P Pastes the item stored in the clipb...

Страница 37: ...at menu item The Telnet session is assigned a security level set by the user Passwords can only be accessed as security level 0 The maintenance port is always at se curity level 0 The security levels...

Страница 38: ...e security 3 Read security 5 Provides a user configurable text string for the name of the Express L768 L1 5 This name can help distinguish between different installations You can enter up to 31 alpha...

Страница 39: ...umeric characters in this field including spaces and special characters such as an under bar Firmware Revision Read security 5 Displays the current firmware revision level of the Express L768 L1 5 Thi...

Страница 40: ...elects the mode the HDSL line is in HDSL Mode Write security 2 Read security 5 The Express L768 L1 5 can be in two modes HDSL Terminal Unit Central HTU C or HDSL Terminal Unit Remote HTU R def For HDS...

Страница 41: ...on the other end of the link Continuous errors can indicate a line problem but a burst at one time is normal WAN L2 Protocol Write security 3 Read security 5 This parameter specifies the layer 2 data...

Страница 42: ...Screen IP IP Address Write security 2 Read security 5 The IP address assigned to the Express L768 L1 5 s Ethernet port is set here This address must be unique within the network Factory default is 10...

Страница 43: ...IP address of the host or network address of the device being routed to Static Routes Subnet Mask Write security 4 Read security 5 This mask determines the bits in the previous IP address that are us...

Страница 44: ...IP RIP Write security 3 Read security 5 The Routing Information Protocol RIP is supported by the Express L768 L1 5 The following parameters are required for setting up the mode on the Ethernet port R...

Страница 45: ...cts as a DHCP server and will dynamically assign IP network mask default gateway and DNS ad dresses to any device which transmits a broadcast DHCP request The ad dresses assigned are based on the Expr...

Страница 46: ...ver addresses can be exchanged between PPP peers When a connection occurs and IPCP is negotiated the Express L768 L1 5 will get the DNS server addresses from the PPP peer If the configured DNS server...

Страница 47: ...ll act as a relay agent UDP Relay UDP Relay List Up to four relay destination servers can be specified in this list UDP Relay List Relay Address Write security 3 Read security 5 This is the IP address...

Страница 48: ...he IP addresses behind one of its ports The device which sent the ARP request will then cor rectly assume that it can reach the requested IP address by sending packets to the physical address that was...

Страница 49: ...e security 2 Read security 5 When this option is set to On def the Express L768 L1 5 will route IPX Set ting it to Off will disable all IPX functionality IPX Network Write security 2 Read security 5 T...

Страница 50: ...twork number for the Ethernet segment Non Seed def The Express L768 L1 5 will listen for an IPX network number being sent by another router including Novell software routers residing on servers on the...

Страница 51: ...rity 5 This value specifies how often the Express L768 L1 5 sends out IPX SAP Ser vice Access Protocol packets on the network segment attached to the Ethernet port The SAP packets sent contain informa...

Страница 52: ...packets which include ARP packets are not bridged When IPX routing is active IPX packets are not bridged Also the WAN IP Bridge and WAN IPX Bridge menus allow the WAN connection to bridge packets to t...

Страница 53: ...IP updates are sent when the routing table has changed When set to No def updates are sent periodically RIP version method and direction are determined by the Ethernet parameters set in the Configurat...

Страница 54: ...he IPX seed status WAN IPX Bridge Triggered Write security 2 Read security 5 When set to Yes only IPX RIP and SAP updates are sent when the routing or service table has changed When set to No def upda...

Страница 55: ...een the generation of configuration BPDUs Bridging Pro tocol Data Units by the root bridge The value is in one tenth seconds with a range between 10 1 0 second and 100 10 0 seconds The default is 20 2...

Страница 56: ...Active Write security 2 Read security 5 The Bridge Group 1 port can be disabled when set to No In this mode no bridge traffic will be forwarded in or out Setting to Yes def allows the port to particip...

Страница 57: ...sents Bridge Group 1 and WAN1 represents Bridge Group 2 This menu permits the user to adjust the parameters or rules for the table as addresses are learned Address Table Aging Write security 3 Read se...

Страница 58: ...y Screen Security Authentication Write security 1 Read security 2 The method used for authenticating the PPP peer is selected here The possi ble values are None def No attempt is made to authenticate...

Страница 59: ...unicate with when the primary server does not respond Radius Server UDP Port Write security 1 Read security 2 This is the UDP port that the Express L768 L1 5 should use when communi cating with the RA...

Страница 60: ...other capabilities which allow more flexibility than CHAP The following selections are possible PAP CHAP or EAP def The Express L768 L1 5 will ask for EAP during the first PPP LCP negotiation and allo...

Страница 61: ...ation address used for comparison hexadecimal format Dest Mask Bits in the MAC destination address used for comparison hexadecimal format MAC Type 16 bit MAC type field used for comparison hexadecimal...

Страница 62: ...Range 0 to 65535 decimal format Src Port Cmpr Type of comparison that is performed means ports equal to not means port not equal to means port greater than means port less than None means the source...

Страница 63: ...s which are compared hexadecimal format Src Socket 16 bit value which is the source socket Range 0 65535 Src Socket Comp Type of comparison that is performed means socket equal to Not means socket not...

Страница 64: ...manent Virtual Circuits PVC and Switched Virtual Circuit SVC PVCs are like ded icated point to point private lines Since the physical connection is always there in the form of a leased line call setup...

Страница 65: ...cate with Frame Relay Polling Frequency Write security 3 Read security 5 This parameter is the interval that the Express L768 L1 5 polls the Frame Re lay switch using the maintenance protocol selected...

Страница 66: ...meters from an old profile to this newly inserted profile use the copy C and paste P keys Entire configuration trees can be copied with this method To delete an unused profile use the D key when the c...

Страница 67: ...t When this DLCI becomes active the Express L768 L1 5 will add a route in the IP routing table IP Map IP Netmask Write security 3 Read security 5 The IP network mask to apply to the Far End IP Address...

Страница 68: ...lly transmitted and are listened to on this virtual circuit Tx Only RIP advertisements are periodically transmitted but are not listened to on this virtual circuit Rx Only RIP is not transmitted on th...

Страница 69: ...DLCI Mapping Bridge Map This menu is used to permit bridging of packets over this DLCI Each DLCI or virtual circuit must be assigned a bridge group The bridge group treats all virtual circuits as one...

Страница 70: ...ming packets from this PVC are blocked except as defined in the Filters In Exceptions list Forward All All incoming packets from this PVC are not blocked except as defined in the Filters In Exceptions...

Страница 71: ...rity 5 The packets which transmit out this PVC from the Express L768 L1 5 can be filtered in three ways Disabled def Turns off packet output filtering No outgoing packets to this PVC are blocked Block...

Страница 72: ...he profile used when connected using PPP Figure 3 9 shows the PPP profile menu Figure 3 9 Configuration PPP Profile Screen PPP Profile Authentication The authentication menu contains the required para...

Страница 73: ...cated using PAP CHAP or EAP CHAP or EAP The connection can be authenticated using CHAP or EAP only EAP TheconnectionwillonlyallowauthenticationbythepeerusingEAP Authentication Tx Username Write securi...

Страница 74: ...ess negotiated with the PPP peer ISP Multiple stations on the Ethernet side can access the Internet simultaneously See the section IP NAT on page 29 for more global options Setting this option to On w...

Страница 75: ...ite security 3 Read security 5 The Express L768 L1 5 can perform version 1 V1 def or version 2 V2 of RIP on this WAN connection RIP Method Write security 3 Read security 5 Split Horizon Only routes no...

Страница 76: ...er s network to the routing table The Express L768 L1 5 normally will treat the WAN network as an unnum bered link This is usually referred to as being a half router However a PPP peer which wants to...

Страница 77: ...ters needed for exchanging bridged packets with the PPP peer Bridge Mode Write security 3 Read security 5 When set to On def the Express L768 L1 5 will attempt to negotiate PPP BCP with the PPP peer B...

Страница 78: ...is the number of configuration naks that should occur before an option is configuration rejected This allows a connec tion to succeed that might otherwise fail The possible values are 5 def 10 15 and...

Страница 79: ...to On Type Selects the filter define list to reference MAC from the Configuration Security Filter Defines MAC Filter Defines list Pattern from the Configuration Security Filter Defines Pattern Filter...

Страница 80: ...led def Turns off packet output filtering No outgoing packets are blocked Block All All outgoing packets to the WAN are blocked except as defined in the Filters Out Exceptions list Forward All All out...

Страница 81: ...hods can be protected using authentication Figure 3 10 shows the Configuration Management menu Figure 3 10 Configuration Management Screen Management Telnet Any Telnet client application can bring up...

Страница 82: ...authenticating the user User List Password Write security 0 Read security 3 When the authenticating method is password this text string is used for the password User List Idle Time Write security 1 R...

Страница 83: ...g lists SNMP Communities This list is used to set up to eight SNMP communities names that the Express L768 L1 5 will allow Factory default sets the community public with Get privileges Communities Nam...

Страница 84: ...rt The Express L768 L1 5 has an EIA 232 connector on the back of the unit The setup for that port is under this menu Maint Port Password Protect Write security 0 Read security 1 When set to No the mai...

Страница 85: ...ity that the maintenance port will run The possi ble values are None def Odd or Even Maint Port Stop Bits Write security 5 Read security 5 This is the stop bit used for the maintenance port The possib...

Страница 86: ...192L1 1 STATUS MENU The Express L768 L1 5 s Status menu contains comprehensive status and di agnostic information used in verifying configuration and identifying prob lems The menus are divided into p...

Страница 87: ...nks Reflects LCP layer active BCP Shows UP if PPP Bridge Control Protocol has negotiated successfully IPCP Shows UP if PPP IP Control Protocol has negotiated successfully IPXCP Shows UP if PPP IPX Con...

Страница 88: ...g active selection Tx Frames Number of Frame Relay packets that have been transmitted via this DLCI Rx Frames Number of Frame Relay packets that have been received via this DLCI Tx Bytes Number of Fra...

Страница 89: ...n the listening state Learning Port is in the learning state Forwarding Port is in the forwarding state with the following possible properties root is the root port designated is designated port Block...

Страница 90: ...IP Routes Port Port gateway is located on local sent directly to the Express L768 L1 5 router eth0 Express L768 L1 5 s ethernet port wan0 Express L768 L1 5 s first PPP bundle fr 0 fr 9 Express L768 L...

Страница 91: ...e Number of times the Express L768 L1 5 has referenced the route IPX Routes Hops Number of routers that must go through to get to destination Ranges from 0 15 or 16 for infinite can t get there from h...

Страница 92: ...stics for the Ethernet port Tx Packets Packets transmitted out the Ethernet port Rx Packets Packets received from the Ethernet port Tx Errors Total transmit errors encountered on Ethernet port Single...

Страница 93: ...t No application at dest port UDP datagrams received UDP bad packets ICMP redirected messages ICMP packet errors ICMP timeouts received ICMP messages sent ICMP messages received ICMP specif if errors...

Страница 94: ...Echo Request Write security 4 Read security 5 When activated the echo request test will begin sending continuous PPP echo request packets to any open LCP ports Results are displayed on the screen This...

Страница 95: ...e divided up as follows level 0 Fatal event causes reset level 1 Critical event level 2 Error event level 3 Warning event level 4 Notify event level 5 Informational event level 6 Debugging event Figur...

Страница 96: ...must be at or below this level Range is 0 to 6 The default is 3 PPP Log View This menu displays the log list The fields are as follows Date Time Date and time event occurred Level Level associated wit...

Страница 97: ...s are as follows Date Time Date and time event occurred Level Level associated with this event 0 6 Message Text message for this event If message is too long to fit on the line another event appears b...

Страница 98: ...nge is 0 to 6 The default is 3 Network Log View This menu displays the log list The fields are as follows Date Time Date and time event occurred Level Level associated with this event 0 6 Message Text...

Страница 99: ...Read security 5 The ping menu is used to send ICMP ping messages to hosts The following items are under this menu Start Stop Activator to start and cancel a ping test Host Address IP address or domai...

Страница 100: ...s firmware can be upgraded using this menu Upgrade Transfer Method The two methods for upgrading are TFTP and XMODEM TFTP requires a TFTP server running somewhere on the network The Express L768 L1 5...

Страница 101: ...ess L768 L1 5 s maintenance port Press Return to display a simple terminal menu for upgrad ing This menu appears when the flash code has been erased or is corrupt The menu will also appear if you powe...

Страница 102: ...Chapter 3 Terminal Menu Operation and Structure 86 Express L768 L1 5 User Manual 61202192L1 1...

Страница 103: ...two wire Express L768 or four wire Express L1 5 ser vice Signal Format 2B1Q Max distance per loop 8000 feet at 26 AWG Ethernet Interface LAN Ethernet IEEE 802 3 10BaseT Display Available through termi...

Страница 104: ...Chapter 4 Specifications 88 Express L768 L1 5 User Manual 61202192L1 1...

Страница 105: ...what it is configured for under Configuration WAN HDSL Rate Echo Tx X Rx Y The current transmit and receive count for the PPP echo request test Layer 1 up The Express L768 L1 5 s HDSL layer 1 is up Li...

Страница 106: ...Appendix A Loop Status Messages 90 Express L768 L1 5 User Manual 61202192L1 1...

Страница 107: ...t X has been successfully negotiated between Express L768 L1 5 and PPP peer CCP X down level 5 Compression Control Protocol port X has been dropped between Express L768 L1 5 and PPP peer CCP X up leve...

Страница 108: ...X has been successfully negotiated between Ex press L768 L1 5 and PPP peer IPXCP X down level 5 IPX Control Protocol port X has been dropped between Express L768 L1 5 and PPP peer IPXCP X up level 5 I...

Страница 109: ...the Configuration Con nection List Authentication parameters Tx Method Tx Username and Tx Password are correct Peer failed CHAP authen level 3 The PPP peer s reported CHAP username and or password doe...

Страница 110: ...ng the method set in Configuration Security PPP Peer refused SpanTree level 4 The PPP peer would not participate in the Spanning Tree protocol This is a warning message only Bridging will still occur...

Страница 111: ...ed for the interface number inter DHCP couldn t alloc mem level 1 A DHCP response could not be generated due to memory allocation problems DHCP response sent level 4 A DHCP response was successfully s...

Страница 112: ...been closed telclient bad host level 2 Telnet client could not use host name or IP address set in Configuration Util ities Telnet Client Host telclient bad init level 2 Telnet client could not initia...

Страница 113: ...ge related to Telnet server function TELNETD Clr TCBF_BUFFER flag failed level 6 Debugging message related to Telnet client function TELNETD could not obtain peer ip level 2 Telnet server function cou...

Страница 114: ...l 2 TFTP client function could not open a UDP port TFTP error rcvd message level 2 Received error with message from TFTP server TFTP lost communication level 2 Lost communication to TFTP client or ser...

Страница 115: ...am that collects controls and presents data pertinent to the operation of the network devices It resides on a network management station Agent This is a control program that responds to queries and co...

Страница 116: ...age is the response to a network manager GetRe quest or GetNextRequest command Trap This is an unsolicited message issued by a network device to report an operational anomaly or an alarm condition to...

Страница 117: ...each community can be set The default community is public with read only privileges When the IP address is all zeros any manager of the community can access the Express L768 L1 5 Traps Up to four host...

Страница 118: ...Appendix C SNMP 102 Express L768 L1 5 User Manual 61202192L1 1...

Страница 119: ...cription 1 CD N C Carrier Detect 2 RD O Receive Data 3 TD I Transmit Data 4 DTR N C Data Terminal Ready 5 GND N A Signal Ground 6 DSR N C Data Set Ready 7 RTS I Request to Send 8 CTS O Clear to Send 9...

Страница 120: ...Table D C 10BaseT Ethernet The switch position can be set for either TO NIC or TO HUB on the back panel of the Express L768 L1 5 The rear panel is illustrated in Figure 1 6 on page 11 Switch Position...

Страница 121: ...terface Terminal commands are as follows top_menu sub_menu1 sub_menu2 config_item Each config_item is entered as shown below TYPE ENTERED AS string printable characters within double quotes password p...

Страница 122: ...s directly to Con guration IP menu ipx Goes directly to Con guration IPX menu bridge Goes directly to Con guration Bridge menu security Goes directly to Con guration Security menu ppp Goes directly to...

Страница 123: ...768 L1 5 in terminal mode A baud rate of 9600 is strongly recommended when uploading As soon as the upload has been completed type save to save the new configuration to flash A reset command or power...

Страница 124: ...Appendix E Terminal Mode Commands 108 Express L768 L1 5 User Manual 61202192L1 1...

Страница 125: ...tion Protocol Used for resolving physical address when IP ad dress is unknown B Channel 64 kbps bearer channel used for voice circuit or packet switched data bearer service As defined by CCITT standar...

Страница 126: ...gth of time CSMA CD is used by Ethernet and IEEE 802 3 D channel The ISDN channel that carriers signalling information to control the call setup teardown or invocation of supplementary services The D...

Страница 127: ...two copper pairs hop count A routing metric used to measure the distance between a source and a desti nation Particularly used by RIP hub 1 Communications center 2 Major routing station for connecting...

Страница 128: ...T Communications Satellite Business Systems GTE Telenet GTE Sprint and MCI information element The name for the data fields within an ISDN Layer 3 message interworking Communication between two types...

Страница 129: ...ly back to its input looped around and the returning data is checked against that which was sent Media Access Control MAC As defined by the IEEE the lower of the two sublayers of the OSI reference mod...

Страница 130: ...e jitter In telephony the measurement in degrees out of phase that an analog signal deviates from the reference phase of the main data carrying signal Often caused by alternating current components in...

Страница 131: ...formation that is required by internet routers in order to route datagrams from any source socket to any destination socket in the internet Using RTMP internet routers dynamically maintain routing tab...

Страница 132: ...kbps With more advanced digital voice encoding techniques it can handle more voice channels T1 is a standard for digital transmission in North America TA Terminal Adaptor A DCE that connects to the IS...

Страница 133: ...eive information In contrast a 4 wire circuit consists of two pairs One pair is used to send and one pair is used to receive All trunk cir cuits long distance are 4 wire A 4 wire circuit delivers bett...

Страница 134: ...Glossary 118 Express L768 L1 5 User Manual 61202192L1 1...

Страница 135: ...graphy and Telephony CD Carrier Detect CPE Customer Premises Equipment CRC Cyclic Redundancy Check CSMA CD Carrier Sense Multiple Access Collision Detect DHCP Dynamic Host Configuration Protocol DLCI...

Страница 136: ...table Unit NBP Name Binding Protocol NEBE Near End Block Errors NIC Network Interface Card NI 1 National ISDN 1 NT Network Termination PBX Private Branch Exchange PC Personal Computer PING Packet Inte...

Страница 137: ...name 57 B baud rate 68 bridge 61 bridge group 1 40 bridge group 1 active 40 bridge group 1 path cost 40 bridge group 1 priority 40 bridge group 2 active 40 bridge group 2 path cost 41 bridge group 2 p...

Страница 138: ...ng 8 DHCP mode 29 display 87 DLCI mapping 49 DLCI mapping active 50 DLCI mapping bridge map 53 DLCI mapping DLCI 50 DLCI Mapping filters 54 DLCI mapping IP map 50 DLCI mapping IPX map 52 DLCI table 72...

Страница 139: ...map active 50 IP map far end IP address 51 IP map IARP 51 IP map IP netmask 51 IP map link IP address 51 IP Map NAT 52 IP map RIP direction 52 IP map RIP method 52 IP map RIP protocol 51 IP menu 26 IP...

Страница 140: ...rd protect 68 maint port stop bits 69 maintenance port 68 maintenance protocol 49 management 65 management maint port 68 management SNMP 67 management Telnet 65 maximum age 39 menu commands 105 menu s...

Страница 141: ...radius server primary server 43 radius server retry count 43 radius server secondary server 43 radius server secret 43 radius server UDP port 43 rate status messages 89 rear panel 11 RIP 8 9 28 59 RI...

Страница 142: ...P cache 73 status bridge table 74 status IP routes 74 status IP stats 77 status IPX routes 75 status IPX servers 75 status LAN stats 76 status sessions 71 status WAN stats 76 stop bits 69 subnet mask...

Страница 143: ...idle time 66 user list level 66 user list name 66 user list password 66 using keyboard to navigate menu 19 utilities menu 17 83 utilities exit 85 utilities ping 83 utilities Telnet client 84 utilitie...

Страница 144: ...Index 128 Express L768 L1 5 User Manual 61202192L1 1...

Страница 145: ...rmines that a repair is needed Technical Support will coordinate with the Customer and Product Service CAPS de partment to issue an RMA number For information regarding equipment currently in house or...

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