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Chapter 1: Understanding ISDN and the Express XL/XLT

16

Express XL/XLT User Manual

61200070L1-1

Network Address Translation Mode

NAT is a special mode of operation in which the Express XL/XLT obtains a
dynamically assigned IP address from the peer router (typically an Internet
Service Provider). This allows a network of computers to benefit from Ether-
net to ISDN speeds while still appearing to the Internet Service Provider (or
central site router) as a single IP address which is typical of PC based serial
dial-up solutions.

A call is initiated to the ISP using the Dial menu or demand for a Connection
List profile that has the IP parameter

NAT

set to

Yes

. The network computer’s

IP stack may use DHCP to request an IP address, default gateway address, and
domain name server addresses from the Express XL/XLT.

Front Panel

Figure 1-6 on page 17 shows the front panel of the Express XL/XLT. The indi-
cators are divided into LAN functions, WAN functions, and Test functions.

LAN Indicators

RX

Flashes when receiving data from the 10BaseT connector.

TX

Flashes when transmitting data onto the 10BaseT connector.

LI

Link integrity. Illuminates when there is a good connection

between the Express XL/XLT and the Hub/NIC card.

COL

Illuminates when a collision occurs on the 10BaseT.

JAB

Indicates a jabber condition on the 10BaseT.

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Содержание Express XL

Страница 1: ...Express XL and Express XLT ISDN Router Bridge USER MANUAL Express XL Data Only 1200070L1 Express XLT with POTS Option 1200070L2 61200070L1 1B October 1998...

Страница 2: ...ession Copyright 1989 Carnegie Mellon University All rights reserved Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are dup...

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: ...ring 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 degradati...

Страница 5: ...Corporate LAN 11 Demand Routing and Bridging with the Express XL XLT 12 Factory Default 12 Bridging 13 IP Routing 14 IPX Routing 15 Connection List Simplifying and Enhancing the Dial Function 15 Concu...

Страница 6: ...figuration Menu 34 Configuration System Info 34 System Name 34 System Location 34 System Contact 35 Firmware Revision 35 System Uptime 35 Date Time 35 Configuration WAN 36 WAN ISDN 36 ISDN Dial Line 3...

Страница 7: ...44 DNS Server 1 44 DNS Server 2 44 IP UDP Relay 45 UDP Relay Mode 45 UDP Relay UDP Relay List 45 UDP Relay List Relay Address 45 UDP Relay List UDP Port Type 45 UDP Relay List UDP Port 1 UDP Port 2 UD...

Страница 8: ...guration Security 56 Security Authentication 56 Security When 57 Security Radius Server 57 Radius Server Primary Server 57 Radius Server Secondary Server 57 Radius Server UDP Port 57 Radius Server Sec...

Страница 9: ...riggered 70 IPX Retain 71 IPX Type 20 Packets 71 Connection List Bridge 72 Bridge Mode 72 Connection List Probe 72 Probe Active 72 Probe Interval 72 Probe Update Window 73 Connection List PPP 73 PPP M...

Страница 10: ...o WAN Out 80 Filters Out Exceptions 81 Filters Demand Dial 81 Filters Dem Dial Exceptions 82 Configuration Management 83 Management Telnet 83 Telnet Server Access 83 Telnet User List 84 User List Name...

Страница 11: ...atus WAN Stats 95 Status LAN Stats 96 Status IP Stats 96 Test Menu 98 Test Menu Echo Request 98 Test Menu Dial Self 98 Logs Menu 99 Logs Sys log Host 99 Logs PPP Log 99 PPP Log Active 100 PPP Log Wrap...

Страница 12: ...he Express XL XLT Does Not Read Ready 107 If You are Unable to Connect Calls 113 Chapter 5 Specifications 115 Specifications and Features 115 Network Interface 115 Ethernet Interface LAN 115 Switch Co...

Страница 13: ...Scheme 1 24 Figure 2 2 Wiring Scheme 2 25 Figure 3 1 Top Level Terminal Menu 28 Figure 3 2 Configuration System Info Screen 34 Figure 3 3 Configuration WAN Screen 36 Figure 3 4 Configuration IP Screen...

Страница 14: ...List of Figures x Express XL XLT User Manual 61200070L1 1...

Страница 15: ...er Manual xi List of Tables Table 2 A Using the Flash Hook 22 Table 4 A Troubleshooting Calls 113 Table D A IBM AT Style EIA 232 Interface 143 Table D B RJ 45 ISDN BRI U 143 Table D C RJ 11 POTS 144 T...

Страница 16: ...List of Tables xii Express XL XLT User Manual 61200070L1 1...

Страница 17: ...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 ISDN Dial Line menu Enter the SPIDs LDNs and switch type 4 Use the left arro...

Страница 18: ...highlight the IP parameters 9 Set the NAT item to Yes This is a very important step The Express XL XLT will need to translate the fake IP address es on the PC s to the re al address provided dynamical...

Страница 19: ...on IP menu 3 For the Default Gateway enter the IP address of the access server at the remote site This creates a default route in the IP routing table that will be used with the dial on demand feature...

Страница 20: ...e ac cess server A similar configuration must be selected on the access server 17 Use the arrows to get the Dial Out menu parameters for this profile 18 Enter the phone number of the access server in...

Страница 21: ...acket traffic is transmitted or received for the specified number of seconds the Express XL XLT will disconnect the link until a computer on the local LAN again attempts to access a host on the access...

Страница 22: ...Quick Startup Guide 6 Express XL XLT User Manual 61200070L1 1...

Страница 23: ...inks two Local Area Net works LANs using a high speed ISDN public network or leased two wire line Optionally the Express XLT has a plain old telephone service POTS connector that is used for voice mod...

Страница 24: ...Single device access User Datagram Protocol UDP broadcasts are relayed to corporate LAN Client device can obtain the Internet Protocol IP address dynamically us ing Dynamic Host Configuration Protoco...

Страница 25: ...P addresses to ISP assigned IP addresses The PC s IP address can be dynamically assigned by the Express XL XLT Overcomes the serial port speed limitations of current terminal adapter solutions Multili...

Страница 26: ...nternet Multiple and simultaneous access The PC s IP address can by dynamically assigned by the Express XL XLT On demand Internet access Multilink PPP plus compression yields effective throughput grea...

Страница 27: ...s devices Figure 1 5 SOHO to Corporate LAN The Express XL XLT provides the following basic functions 1 LAN Bridge Bridging provides a point to point connection between two LANs The bridge learning fun...

Страница 28: ...s are supported 5 POTS The POTS interface can be used for interfacing to dual tone multi frequency DTMF analog devices such as telephones modems fax ma chines etc The Express XLT POTS option is availa...

Страница 29: ...dditional information specific to the remote site being di aled phone numbers number of B channels to dial authentication information Caller ID etc In addition Demand Dialing may be enabled to allow i...

Страница 30: ...he Host Address as the gateway If the Configuration Connection List IP Route Private option is set to No the route is advertised at the specified metric through the unit s interfaces as if a connectio...

Страница 31: ...hentication information method username password number of B channels telephone numbers Caller ID IP or IPX address for routed con nections and other information can be stored for each destination def...

Страница 32: ...sing the Dial menu or demand for a Connection List profile that has the IP parameter NAT set to Yes The network computer s IP stack may use DHCP to request an IP address default gateway address and do...

Страница 33: ...is powered on and self test has passed Test Indicators ERR Illuminates when self test or front panel test has failed B1 B2 Indicates test selected by front panel buttons Figure 1 6 Express XL XLT LEDs...

Страница 34: ...ard telephone line into three digital channels capable of simultaneous voice and data transmission The three channels are comprised of two bearer B channels at 64 kbps and one data D channel at 16 kbp...

Страница 35: ...ultilink PPP when connecting both B channels The Bandwidth Allocation Protocol BAP may also negotiate which enhances the manage ment of adding and removing a B channel Data compression is also support...

Страница 36: ...ed into it via the main tenance port The factory default is 10 0 0 1 Security Security on network devices is a major concern for almost anyone with a net work The Express XL XLT provides many tools fo...

Страница 37: ...alls over the public net work The leased operation mode supports dedicated 2B1Q data service at rates up to 144 kbps by using a nailed up circuit or a permanent connection between end points See Appen...

Страница 38: ...all transfer and call waiting are fully supported by the Express XL XLT on a touch tone telephone Table 2 A explains how the flash hook is used for han dling multi call situations DTMF Keypad The foll...

Страница 39: ...ransfers calls Answering calls on hold and holding incoming active calls Flash hook places the incoming call on hold and reconnects to outgoing call Hanging up will terminate both calls When connectin...

Страница 40: ...1 Wiring Scheme 1 Use existing analog telephone equipment but replace single analog telephone service with ISDN service To Telephone Company Yellow Red Green Black To Telephone Company Yellow Red Gre...

Страница 41: ...log telephone service and add ISDN service To Telephone Company Yellow Red Green Black To Telephone Company Yellow Red Green Black Express XLT 10 Base T Phone U Personal Computer New Wiring Scheme Red...

Страница 42: ...Chapter 2 Installation 26 Express XL XLT User Manual 61200070L1 1...

Страница 43: ...operations Each Main menu item has several functions and sub menus to identify and access specific parameters Figure 3 1 on page 28 shows the top level terminal menu In order to edit items in the term...

Страница 44: ...menus 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 ISDN line B channel...

Страница 45: ...ed for performing diagnostic testing of the Express XL XLT See the section Test Menu on page 98 for detailed information on the tests available Logs The Logs menu can be used for viewing the operation...

Страница 46: ...on submenu so the path display shows Express XLT Configuration 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 key to...

Страница 47: ...me 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 Act...

Страница 48: ...are copied For example if the cursor is over the Num field in the Connection List screen all of the information associated with the Connection List entry is copied P Pastes the item stored in the cli...

Страница 49: ...t 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 a...

Страница 50: ...ite security 3 Read security 5 Provides a user configurable text string for the name of the Express XL XLT This name can help distinguish between different installations You can enter up to 31 alpha n...

Страница 51: ...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 XL XLT This f...

Страница 52: ...ef If connecting to a leased wire for back to back operation select Leased ISDN Dial Line Dial Line parameters are entered under this menu Dial Line ExpertISDN Write security 2 Read security 5 The Exp...

Страница 53: ...l Line SPID 1 Write security 2 Read security 5 The SPID is a sequence of digits used to identify ISDN terminal equipment to the ISDN switch The SPID is assigned by the local phone company when the ISD...

Страница 54: ...or permanent circuits Leased Line Clock Mode Write security 2 Read security 5 The clock mode determines which unit will supply the clock for synchroniza tion If the two units are connected through cha...

Страница 55: ...assign the POTS interface either LDN 1 or LDN 2 def Once assigned all incoming and outgoing calls are placed to from this num ber POTS NI 1 Conference FI Write security 2 Read security 5 National ISD...

Страница 56: ...is menu Figure 3 4 shows the IP menu Figure 3 4 Configuration IP Screen IP IP Address Write security 2 Read security 5 The IP address assigned to the Express XL XLT s Ethernet port is set here This ad...

Страница 57: ...urity 4 Read security 5 Adds this static route entry to the IP routing table when set to Yes def and removes it if it was previously added if set to No Static Routes IP Address Write security 4 Read s...

Страница 58: ...et to On def the Express XL XLT will advertise and lis ten to routes from other IP routers If Off the route table is still used but only static routes are used for routing IP packets and only the Ethe...

Страница 59: ...ernet port Tx only RIP advertisements are transmitted and not listened to Rx only RIP advertisements are listened to but not transmitted RIP V2 Secret Write security 0 Read security 0 This is a text s...

Страница 60: ...server addresses can be exchanged between PPP peers When a connection occurs and IPCP is negotiated the Express XL XLT will get the DNS server addresses from the PPP peer If the configured DNS server...

Страница 61: ...t 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 of t...

Страница 62: ...r the IP addresses behind one of its ports The device which sent the ARP request will then correctly assume that it can reach the requested IP address by sending packets to the physical address that w...

Страница 63: ...security 2 Read security 5 When this option is set to On def the Express XL XLT will route IPX Setting it to Off will disable all IPX functionality IPX Network Write security 2 Read security 5 The IP...

Страница 64: ...network number for the Ethernet segment Non Seed def The Express XL XLT will listen for an IPX network number being sent by another router including Novell software routers residing on servers on the...

Страница 65: ...curity 5 This value specifies how often the Express XL XLT sends out IPX SAP Ser vice Access Protocol packets on the network segment attached to the Ethernet port The SAP packets sent contain informat...

Страница 66: ...P 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...

Страница 67: ...RIP 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 Configura...

Страница 68: ...menu for an explanation of the 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 cha...

Страница 69: ...he 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 0 se...

Страница 70: ...is mode no bridge traf fic will be forwarded in or out Setting to Yes def allows the port to partici pate in the spanning tree topology WAN Port 0 Path Cost Write security 2 Read security 5 This is th...

Страница 71: ...h the LAN WAN0 or WAN1 port from which they were received This menu permits the user to adjust the pa rameters or rules for the table as addresses are learned Address Table Aging Write security 3 Read...

Страница 72: ...rity 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 authentica...

Страница 73: ...his is the IP address of the first RADIUS server that the Express XL XLT should attempt to communicate with when authenticating a PPP peer Radius Server Secondary Server Write security 1 Read security...

Страница 74: ...rotocol The strength of the authentication is determined in the order EAP CHAP followed by PAP where EAP is the strongest and PAP is the weakest PAP is a clear text protocol which means it is sent ove...

Страница 75: ...ividual filter defines based on packet type Filter Defines MAC Filter Defines Write security 2 Read security 3 The MAC filter is applied to bridge packets only Bridge packets which are for warded by t...

Страница 76: ...ad security 3 The IP filter defines apply to any IP packet whether it is routed or bridged Up to 32 IP defines can be specified Name Identifies the filter entry IP Src IP address compared to the sourc...

Страница 77: ...Filter Defines Write security 2 Read security 3 The IPX filter defines apply to any IPX packet whether it is routed or bridged Also any IPX encapsulation type will be accounted for Up to 32 IPX defin...

Страница 78: ...t equal to Not means socket not equal to means socket greater than means socket less than None no comparison is done on destination socket Type 8 bit value which is the IPX type Type Comp Type of comp...

Страница 79: ...a Connection List profile is defined The Express XL XLT factory defaults with one profile called DEFAULT This profile is used for any incoming calls when Configuration Security Authentication None or...

Страница 80: ...PP peer and for being authenticated by the PPP peer Authentication is applied between the Express XL XLT and the PPP peer as follows 1 The Express XL XLT as the authenticator When answering an incomin...

Страница 81: ...XL XLT for authenticating itself If the Configuration Security Authentication parameter is set to Connection List or RADIUS the Express XL XLT will wait until the PPP peer is authenticated before aut...

Страница 82: ...ame that is used to match the user to the Connection List pro file During an incoming call the Express XL XLT will scan all active connec tion profiles and match the received PPP peer s username If th...

Страница 83: ...ith the PPP peer for exchanging of IP packets IP NAT Write security 3 Read security 5 The Express XL XLT can perform Network Address Translation This feature is most widely used when connecting to the...

Страница 84: ...route the Express XL XLT will dial using this profile When set to No an idle route is not placed in the table This is necessary for dial on de mand applications and if the probe feature is not used Ro...

Страница 85: ...Only routes not learned on the WAN connection are advertised Poison Reverse def All routes are advertised including routes learned from the WAN connection These routes are poisoned None All routes are...

Страница 86: ...arameters for exchanging IPX data with the PPP peer IPX Mode Write security 3 Read security 5 Setting to On def will permit this connection profile to negotiate PPP IPXCP with the PPP peer for exchang...

Страница 87: ...not retained IPX Type 20 Packets Write security 3 Read security 5 In order for certain protocol implementations like NetBIOS to function in the NetWare environment routes must allow a broadcast packet...

Страница 88: ...many destinations using the single ISDN link The Express XL XLT can periodically obtain routing in formation from various locations and retain this in the routing tables thereby permitting the LAN con...

Страница 89: ...rable items under this menu can be changed from their default values forspecialcases PPP Multilink Multilink PPP allows the two B channels to be used together for increased bandwidth Multilink Mode Wr...

Страница 90: ...erly known as STAC for data compression The Ascend Communications version of this compression is also supported The Express XL XLT will automatically select the type of compression Compression is nego...

Страница 91: ...urity 3 Read security 5 This is the second number used for dialing a second B channel when adding bandwidth If BACP BAP is negotiated this number is not necessary If this number is not specified and B...

Страница 92: ...5 Selecting Yes def causes the Express XL XLT to re dial a call at the 56K call type if a 64K call type was unsuccessful This will not occur if set to No or if the original call type was other than 6...

Страница 93: ...mber of seconds the ISDN line must be idle before hanging up this connection A value of 0 def means the Express XL XLT will never drop the link based on the idle timer The range is 0 to 255 Bandwidth...

Страница 94: ...e is calculated Bandwidth Min Channels Write security 3 Read security 5 This represents the minimum number of B channels that must be up for this Connection List profile This value ranges from 0 to 2...

Страница 95: ...set up in two steps 1 define the types of packets that would be of interest in the Configuration Security Filter Defines menu and 2 set up the filter type and combination of defines that will cause a...

Страница 96: ...t IPX from the Configuration Security Filter Defines IPX Filter Defines list Filter List Name Selects between filters defined in the list Next Oper The next operation to use to combine with the next f...

Страница 97: ...nection not to be dialed and do not reset the idle timer of an active con nection This is especially helpful for bridged connections since bridges can not easily distinguish true demand traffic from o...

Страница 98: ...ation and Structure 82 Express XL XLT User Manual 61200070L1 1 Filters Dem Dial Exceptions Write security 2 Read security 5 This is a list of up to 32 filter entries The setup is exactly the same as t...

Страница 99: ...Each of the three methods can be protected us ing authentication Figure 3 9 shows the Configuration Management menu Figure 3 9 Configuration Management Screen Management Telnet Any telnet client appli...

Страница 100: ...thenticating 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 Read...

Страница 101: ...xpress XL XLT will allow Factory default sets the community public with Get privileges Communities Name Write security 1 Read security 3 This is a text string for the community name Communities Privil...

Страница 102: ...rity 1 When set to No the maintenance port is not password protected When On def the Express XL XLT will prompt for a password upon startup Maint Port Password Write security 0 Read security 1 This is...

Страница 103: ...en Maint Port Stop Bits Write security 5 Read security 5 This is the stop bit used for the maintenance port The possible values are 1 def 1 5 or 2 Configuration Terminal Mode This is an activator whic...

Страница 104: ...ist This list is in the same order as the Connection List entries Figure 3 10 shows the Dial menu Figure 3 10 Dial Screen Dial Description Read security 5 This read only field is the name entered for...

Страница 105: ...No call No call is active for this Connection List profile Connecting Outgoing call is being placed for this profile Ringing Incoming call is being answered with this profile PPP negotiating Call is...

Страница 106: ...contains comprehensive status and diag nostic information used in verifying configuration and identifying problems The menus are divided into protocol types and sessions Figure 3 11 shows the Status m...

Страница 107: ...gotiated successfully CCP Shows UP if PPP Compression Control Protocol has negotiated successfully BACP Shows UP if PPP Bandwidth Allocation Control Protocol has negotiated successfully User Displays...

Страница 108: ...ee mode is disabled Disabled Port is not connected for WAN or disabled in configuration Listening Port is in the listening state Learning Port is in the learning state Forwarding Port is in the forwar...

Страница 109: ...twork mask applied to the destination address IP Routes Gateway Host or router to receive this packet IP Routes Port Port gateway is located on local sent directly to the Express XL XLT router eth0 Ex...

Страница 110: ...is packet IPX Routes Port Port gateway is located on local sent directly to the Express XL XLT router eth0 Express XL XLT s ethernet port wan0 Express XL XLT s first PPP bundle wan1 Express XL XLT s s...

Страница 111: ...nges from 0 15 or 16 for infinite IPX Servers TTL Seconds until address is removed from table Value of 999 means server is static Status WAN Stats Read security 5 This menu contains generic WAN statis...

Страница 112: ...isions Carrier Sense Errors total carrier sense errors encountered no link integrity Rx Errors Total packets received in error and dropped CRCs total packets detected with CRC errors Giants total pack...

Страница 113: ...agrams reassembled IP datagrams sent IP datagrams received Total forwarded datagrams IP reassembly timeout Discarded routing entries Total IP fragments Failed fragments IP reassembly failures Disassem...

Страница 114: ...e echo request test will begin sending continuous PPP echo request packets to any open LCP ports Results are displayed on the screen At least one PPP session must be up Test Menu Dial Self Write secur...

Страница 115: ...ivided 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 Figure3...

Страница 116: ...ust 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 with...

Страница 117: ...ows 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 below it conti...

Страница 118: ...ge 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 119: ...security 5 The ping menu is used to send ICMP ping messages to hosts The following items are under the this menu Start Stop Activator to start and cancel a ping test Host Address IP address or domain...

Страница 120: ...ods for upgrading are TFTP and XMODEM TFTP requires a TFTP server running somewhere on the network The Express XL XLT starts a TFTP client function which gets the upgrade code from the TFTP server Se...

Страница 121: ...ss XL XLT 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 power up...

Страница 122: ...Chapter 3 Terminal Menu Operation and Structure 106 Express XL XLT User Manual 61200070L1 1...

Страница 123: ...r back up This will reset all internal settings to their factory de fault 3 Continue holding the SELECT and TEST buttons until the Loop LED flashes once 4 If the Express XL XLT still does not pass sel...

Страница 124: ...g on your premises The telephone service provider s wiring The telephone service provider s hardware The telephone service provider s software setup To isolate the problem perform the following proced...

Страница 125: ...ss XL XLT software setup The telephone service provider s software setup Hardware configuration if the line is extended from the switch To isolate the problem perform the following procedure A Ensure...

Страница 126: ...ess XL XLT is set up for the correct switch type B Make sure the line is multipoint C Make sure the Express XL XLT is set up with the correct SPID and LDN For example SPID1 20572270460101 SPID2 205722...

Страница 127: ...ermine if the problem is the second phone number or the quantity of phone numbers D If possible try another piece of functioning ISDN equip ment with a U interface on the line E With the Express XL XL...

Страница 128: ...mine if the problem is with the second phone num ber or the quantity of phone numbers D If possible try another piece of functioning ISDN equip ment with a U interface on the line E With the Express X...

Страница 129: ...ll explicitly specifying the prefix of the long distance service for exam ple 10288 for AT T If this does not work then most likely the problem is that the long distance service provider is not provid...

Страница 130: ...Chapter 4 Troubleshooting 114 Express XL XLT User Manual 61200070L1 1...

Страница 131: ...LAN Ethernet IEEE 802 3 10BaseT Switch Compatibility AT T 5ESS NTI DMS 100 National ISDN 1 POTS Interface Maximum REN 4 Caller ID Ringing Signal Amplitude 185 Vp p 5V Ringing Signal Frequency 20 Hz 3...

Страница 132: ...phones 12 mA loop current each at 100 ft 24 AWG Supports 4 phones 15 mA loop current each at 100 ft 24 AWG Supports 3 phones 20 mA loop current each at 100 ft 24 AWG Supports 5 phones 13 mA loop curre...

Страница 133: ...he Lucent SPID download feature AutoSpid X A SPID is being attempted by ExpertISDN X starts at 0 and counts up for each SPID format CALL number The Express XL XLT is dialing the number Call Connect B1...

Страница 134: ...DN network Getting TEI 2 The Express XL XLT s ISDN layer 1 is up and one TEI is obtained It is now getting the second TEI from the ISDN network ISDN 1 Ready The ISDN link layers 1 through 3 are up aga...

Страница 135: ...he ISDN network RINGING An incoming call is ringing B1 and B2 Bearer Channel Status Messages 56K Connected at 56K call type 64K Connected at 64K call type Audio Connected at audio call type Dialing Di...

Страница 136: ...Appendix A Loop Status Messages 120 Express XL XLT User Manual 61200070L1 1 Routing Incoming call state in transition Waiting Call is between states or waiting for switch...

Страница 137: ...g to a single PPP peer BACP X down level 5 Bandwidth Allocation Control Protocol port X has been dropped between Express XL XLT and PPP peer BACP X up level 5 Bandwidth Allocation Control Protocol por...

Страница 138: ...iated be tween Express XL XLT and PPP peer CHAP authen failed level 3 The PPP peer has rejected the Express XL XLT s username and or password used for authenticating Check to make sure the Configurati...

Страница 139: ...tiated between Ex press XL XLT and PPP peer Link is looped back level 3 The Express XL XLT has dialed a location which is looping back all data Es sentially it has negotiated PPP with itself MP option...

Страница 140: ...tion 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 does not match the Express XL XLT s parameters T...

Страница 141: ...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 across the WAN por...

Страница 142: ...ID format AutoSpid Retry level 4 ExpertISDN is attempting another SPID format AutoSwitch AT T level 4 ExpertISDN has determined that the switch protocol is AT T 5E custom AutoSwitch DMS level 4 Expert...

Страница 143: ...ap Incorrect level 2 The bearer capability received in an information element from the switch was invalid Bearer Mode Incorrect level 2 The bearer mode received in an information element from the swit...

Страница 144: ...n element describing the reason reported from the ISDN switch as cause for a call failure The value num is the diagnostic which can be helpful for diagnosing by the telephone compa ny or ADTRAN techni...

Страница 145: ...ASSIGNED_NUMBER USER_ALERT_NO_ANS USER_BUSY WRONG_MESSAGE WRONG_MSG_FOR_STATE Conference number level 5 The Express XLT has conferenced the held call with the active call If no caller ID is available...

Страница 146: ...EST NOT ISDN level 4 The number dialed is not ISDN This is a warning and is most often seen for POTS calls Dial number level 5 The Express XL XLT is dialing number Dialing level 5 A phone on the Expre...

Страница 147: ...number level 5 The Express XLT has placed a call on hold If no caller ID is available for the ISDN line then number will be blank for incoming calls Hold Reject number level 5 The Express XLT attempte...

Страница 148: ...own trying to register second SPID LDN TOO LONG level 1 The number in either LDN 1 or LDN 2 is longer than 20 characters NETWORK BUSY level 2 Called location was busy or network could not route call N...

Страница 149: ...general panic general error no rip rip tasks could not start out of memory out of available memory out of TCP ports all TCP ports are used up unknown error unknown fatal error has occurred Set timer e...

Страница 150: ...information element was received from the ISDN switch with the val ue NN in hexadecimal Transfer number level 5 The Express XLT has transferred the held call with the active call If no caller ID is av...

Страница 151: ...level 6 The Express XL XLT did not install a default route because the inter or hops was zero Rejecting packet with Source Routing option src srcip dest destip level 4 The Express XL XLT has dropped a...

Страница 152: ...failed level 6 Debugging message related to Telnet client function Telnet Client socket failed level 2 Telnet client function could not open TCP socket Telnet server connect to ip level 4 Telnet serve...

Страница 153: ...BLOCK flag failed level 6 Debugging message related to Telnet client function TELNETD SOCKET creation error level 2 Telnet server could not be started due to TCP socket error TFTP can t get to host le...

Страница 154: ...Appendix B Log Messages 138 Express XL XLT User Manual 61200070L1 1...

Страница 155: ...m 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 com...

Страница 156: ...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 157: ...s to be defined The privilege level of 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...

Страница 158: ...Appendix C SNMP 142 Express XL XLT User Manual 61200070L1 1...

Страница 159: ...Applicable N C Not Connected Table D B RJ 45 ISDN BRI U Pin Name I O Description 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...

Страница 160: ...ble D D 10BaseT Ethernet The switch position can be set for either TO NIC or TO HUB on the back panel of the Express XL XLT The rear panel is illustrated in Figure 1 7 on page 18 Pin 3 Ring Pin 4 Tip...

Страница 161: ...face 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 prin...

Страница 162: ...SDN menu pots Goes directly to Con guration WAN POTS menu ip Goes directly to Con guration IP menu ipx Goes directly to Con guration IPX menu bridge Goes directly to Con guration Bridge menu security...

Страница 163: ...L XLT 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 cyc...

Страница 164: ...Appendix E Terminal Mode Commands 148 Express XL XLT User Manual 61200070L1 1...

Страница 165: ...defined by CCITT standards a type of telecommunication service that pro vides the capability for the transmission of information between user to net work interfaces Bearer services defined for ISDN ar...

Страница 166: ...ide packet mode data service DDS Dataphone Digital Service AT T private line service for transmitting data over a digital system The digital transmission system transmits electrical sig nals directly...

Страница 167: ...ecifying a linear bus network LAN with a CSMA CD access method on a bus topology Ethernet follows the 802 3 standard transmitting at 10 megabits per second This is the most common local area network s...

Страница 168: ...802 3 a data packet whose length exceeds that pre scribed in the standard jitter The slight movement of a transmission signal in time or phase that can intro duce errors and loss of synchronization fo...

Страница 169: ...s how an Internet address is to be divided into network subnet and host parts The netmask has ones in the bit positions in the 32 bit address which are to be used for the network and subnet parts and...

Страница 170: ...best route between two networks Routers for ward packets from one network to another based on network layer informa tion routing metric The method by which a routing algorithm determines one route is...

Страница 171: ...cket is ever sent out on the WAN synchronous 1 The condition occurring when two events happen in a specific time rela tionship with each other both under control of a master clock 2 A method of data t...

Страница 172: ...N A single ISDN circuit divided into two 64 kbps digital channels for voice or data and one 16 kbps channel for low speed data up to 9 600 baud and signalling 2B D is carried on one or two pairs of wi...

Страница 173: ...S regulations this also marks the line of demarcation between customer owned equipment and the public network ZIP Zone Information Protocol The AppleTalk session layer protocol used to maintain and d...

Страница 174: ...Glossary 158 Express XL XLT User Manual 61200070L1 1...

Страница 175: ...l Telegraphy 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...

Страница 176: ...C Network Interface Card NI 1 National ISDN 1 NT Network Termination PBX Private Branch Exchange PC Personal Computer PING Packet InterNet Groper POTS Plain Old Telephone Service PPP Point to Point Pr...

Страница 177: ...67 authentication call ID 2 67 authentication caller ID 66 authentication Rx password 66 authentication Rx username 66 authentication Tx method 65 authentication Tx password 66 authentication Tx usern...

Страница 178: ...onfiguration menu 27 34 configuration bridge 50 configuration connection list 63 configuration IP 40 configuration IPX 47 configuration management 83 configuration management menu 83 configuration sec...

Страница 179: ...domain name 44 DNS server 1 44 DNS server 2 44 domain name 44 download uploading configuration 147 DTMF keypad 22 E EAP 58 66 echo request 98 echo request test 17 EIA 232 interface 143 embedded agent...

Страница 180: ...P routes 93 IP routing 14 IP stats 96 IP default gateway 41 IP DNS 44 IP IP address 40 IP IP router 42 IP mode 67 IP NAT 43 67 IP proxy ARP 46 IP RIP 42 69 IP route 67 IP static routes 41 IP subnet ma...

Страница 181: ...port stop bits 87 maintenance port 86 management 83 management maint port 86 management SNMP 85 management Telnet 83 master mode 38 maximum age 53 menu commands 145 menu structure 27 MIB 83 139 mode 1...

Страница 182: ...pression 74 PPP max config 74 PPP max failure 75 PPP max timer 74 PPP multilink 73 PPP VJ compression 74 private 14 probe 72 probe update window 73 probe active 72 probe interval 72 proxy ARP 46 pushb...

Страница 183: ...11 spanning tree 52 92 spanning tree algorithm 11 52 spanning tree forward delay 53 spanning tree hello time 53 spanning tree LAN port 53 spanning tree maximum age 53 spanning tree mode 52 spanning tr...

Страница 184: ...test fails 107 if the Express XL XLT does not read ready 107 if you are unable to connect calls 113 Tx and Rx 43 Tx methods 65 Tx only 43 type 20 packets 71 U UDP port type 45 UDP relay 45 UDP relay l...

Страница 185: ...dge triggered 51 WAN IPX bridge 51 WAN IPX bridge frame type 52 WAN IPX bridge network 52 WAN IPX bridge seed status 52 WAN IPX bridge triggered 52 WAN menu 36 WAN port 54 WAN port 0 active 54 WAN por...

Страница 186: ...Index 170 Express XL XLT User Manual 61200070L1 1...

Страница 187: ...s needed Technical Support will coordinate with the Return Material Authorization RMA de partment to issue an RMA number For information regarding equipment currently in house or possible fees associa...

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