Avaya Configuring IP Utilities Uživatelský manuál

BayRS Version 14.00Part No. 308631-14.00 Rev 00October 19994401 Great America ParkwaySanta Clara, CA 95054Configuring IP Utilities

x308631-14.00 Rev 00NetBIOS Global Parameters ... A-21NetBIOS/IP

Configuring IP Utilities6-10308631-14.00 Rev 00Changing the Telnet Login PromptYou can change the Telnet login prompt on the Telnet console screen by

Customizing Telnet Services308631-14.00 Rev 006-11 Changing the Login TimeoutYou can specify a value that will determine the number of minutes that ca

Configuring IP Utilities6-12308631-14.00 Rev 00Changing the Password TimeoutBy changing the password timeout value you can determine the number of min

Customizing Telnet Services308631-14.00 Rev 006-13 Changing the Command TimeoutBy changing the command timeout you determine the number of minutes tha

Configuring IP Utilities6-14308631-14.00 Rev 00Using Site ManagerComplete the tasks in the following table to specify the number of minutes that can e

Customizing Telnet Services308631-14.00 Rev 006-15 Using Site ManagerComplete the tasks in the following table to specify the number of login attempts

Configuring IP Utilities6-16308631-14.00 Rev 00To enable the Technician Interface to display a report showing a record of all processing operations, c

Customizing Telnet Services308631-14.00 Rev 006-17 Enabling Diagnostic Network DataThis parameter allows you to specify whether you want the Technicia

Configuring IP Utilities6-18308631-14.00 Rev 00Enabling Diagnostic PTY DataTo specify whether you want the Technician Interface to display pseudo-term

Customizing Telnet Services308631-14.00 Rev 006-19 Changing the History FileYou can determine the maximum number of commands you want stored in the lo

308631-14.00 Rev 00xishow ntp stats ...D-

Configuring IP Utilities6-20308631-14.00 Rev 00Customizing a Telnet Client on the Router After you start a Telnet client on the router for outbound Te

Customizing Telnet Services308631-14.00 Rev 006-21 Using Site ManagerComplete the tasks in the following table to enable or disable a Telnet client on

Configuring IP Utilities6-22308631-14.00 Rev 00To disable verbose debug logging, navigate to the client-specific prompt and enter:client# debug-log-fl

Customizing Telnet Services308631-14.00 Rev 006-23 For example, the following command line changes the Telnet server’s TCP remote port number to 20:cl

Configuring IP Utilities6-24308631-14.00 Rev 00For example, the following command line changes the default command prompt to system1:client# prompt sy

308631-14.00 Rev 007-1 Chapter 7Customizing NTP ServicesThis chapter describes how to customize NTP services on the router. It assumes you have config

Configuring IP Utilities7-2308631-14.00 Rev 00Configuring NTP Using the BCC or Site ManagerTable 7-1 lists the NTP configuration tasks described in th

Customizing NTP Services308631-14.00 Rev 007-3 For example, the following command line reenables NTP on the router:ntp# enablentp#Using Site ManagerTo

Configuring IP Utilities7-4308631-14.00 Rev 00To specify the mode in which you want NTP to run on the router, complete the following tasks:Site Manage

Customizing NTP Services308631-14.00 Rev 007-5 Configuring Remote Time Servers You configure remote time servers (peers) for time synchronization in u

Configuring IP Utilities7-6308631-14.00 Rev 00Using the BCCTo specify the IP address of each peer that you want to add to the router, navigate to the

Customizing NTP Services308631-14.00 Rev 007-7 Setting the Mode for a Remote Time ServerYou can specify the mode in which a remote time server operate

Configuring IP Utilities7-8308631-14.00 Rev 00Setting Local Host ModeLocal Host Mode indicates the mode of operation of the local NTP client. By defau

Customizing NTP Services308631-14.00 Rev 007-9 Specifying the Source IP AddressThe source IP address allows you to specify a single IP address that NT

Configuring IP Utilities7-10308631-14.00 Rev 00Using Site ManagerTo specify the source IP address of a remote time server, complete the following task

Customizing NTP Services308631-14.00 Rev 007-11 To specify whether the local NTP client will prefer or reject NTP packets from the remote time server,

Configuring IP Utilities7-12308631-14.00 Rev 00Deleting Remote Time Servers from a RouterWhen you delete a remote time server (peer), NTP deletes the

Customizing NTP Services308631-14.00 Rev 007-13 Configuring NTP Access Control The access control feature allows you to selectively restrict NTP clien

Configuring IP Utilities7-14308631-14.00 Rev 00Specifying a Filter Type and IP Subnet MaskThe NTP filter type parameter allows you to specify whether

Customizing NTP Services308631-14.00 Rev 007-15 Deleting Access for a Time ServerWhen you delete access for a remote time server (peer), Site Manager

308631-14.00 Rev 00xiiiFiguresFigure 2-1. TCP Between IP and Clients ...2-6Figure 2-2

308631-14.00 Rev 008-1 Chapter 8Customizing NetBIOS over IPThis chapter describes how to customize NetBIOS over IP services on the router. It assumes

Configuring IP Utilities8-2308631-14.00 Rev 00Disabling and Reenabling NetBIOSWhen you start NetBIOS on the router, NetBIOS is automatically enabled.T

Customizing NetBIOS over IP308631-14.00 Rev 008-3 Enabling the Insertion of Record Route OptionThe Insertion of Record Route option prevents rebroadca

Configuring IP Utilities8-4308631-14.00 Rev 00Configuring a NetBIOS CacheNetBIOS is a broadcast-intensive protocol. Much of the broadcast overhead is

Customizing NetBIOS over IP308631-14.00 Rev 008-5 By default, NetBIOS treats a name as a 16-character entity. You can use Site Manager to enable the f

Configuring IP Utilities8-6308631-14.00 Rev 00Creating a MIB Instance for a Cached NameBy default, NetBIOS creates a MIB instance for each name entry

Customizing NetBIOS over IP308631-14.00 Rev 008-7 Specifying the Size of the Name CacheBy default, NetBIOS allocates space for 100 entries in the name

Configuring IP Utilities8-8308631-14.00 Rev 00By default, inactive NetBIOS names expire from the NetBIOS name cache after 300 seconds.You can use Site

Customizing NetBIOS over IP308631-14.00 Rev 008-9 For networks that actively use up to 2500 NetBIOS server names, use the default value (253). To dete

Configuring IP Utilities8-10308631-14.00 Rev 00Customizing NetBIOS on an IP InterfaceNetBIOS software on the router communicates with NetBIOS clients

Customizing NetBIOS over IP308631-14.00 Rev 008-11 You can use Site Manager to disable or reenable this interface for caching the name of each NetBIOS

Configuring IP Utilities8-12308631-14.00 Rev 00Supplying a Rebroadcast AddressBy default, NetBIOS uses the IP broadcast address configured for this in

Customizing NetBIOS over IP308631-14.00 Rev 008-13 Configuring a Static NetBIOS Name and AddressYou can add static NetBIOS names to the router. These

Configuring IP Utilities8-14308631-14.00 Rev 00Disabling and Reenabling Static Name CachingBy default, NetBIOS caches the names you added statically.

Customizing NetBIOS over IP308631-14.00 Rev 008-15 Site Manager ProcedureYou do this System responds1. In the Configuration Manager window, choose Cir

308631-14.00 Rev 009-1 Chapter 9Customizing the DNS ClientWhen you create the DNS client, default values are in effect for all parameters. You may wan

Configuring IP Utilities9-2308631-14.00 Rev 00Disabling and Reenabling the DNS ClientYou can disable or reenable DNS client services on the router usi

Customizing the DNS Client308631-14.00 Rev 009-3 Modifying the DNS Client ConfigurationYou can modify how the router makes requests to the DNS server,

308631-14.00 Rev 00xvTablesTable 2-1. TCP Reliability Features ...2-3Table 2-2

Configuring IP Utilities9-4308631-14.00 Rev 00For example, the following commands change how the router sends DNS requests:dns# time-out 10dns# max-re

Customizing the DNS Client308631-14.00 Rev 009-5 Disabling the Recursion BitIf the first DNS server that the router contacts does not have the request

Configuring IP Utilities9-6308631-14.00 Rev 00Modifying How the DNS Client Handles Server ResponsesYou can specify whether the router accepts the DNS

Customizing the DNS Client308631-14.00 Rev 009-7 Modifying the DNS Server ListThe DNS server list contains the DNS servers (up to three) that the DNS

Configuring IP Utilities9-8308631-14.00 Rev 00Using Site ManagerTo view the list of DNS servers to which the router can connect, complete the followin

Customizing the DNS Client308631-14.00 Rev 009-9 Using Site ManagerTo add a new entry (up to a maximum of three) to the DNS server list, complete the

Configuring IP Utilities9-10308631-14.00 Rev 00Using Site ManagerTo delete an entry from the DNS server list, complete the following tasks:Deleting DN

Customizing the DNS Client308631-14.00 Rev 009-11 Using Site ManagerTo delete DNS client services from the router, complete the following tasks:Site M

308631-14.00 Rev 0010-1 Chapter 10Customizing the DNS ProxyWhen you create the DNS proxy, default values are in effect for all parameters. You can cha

Configuring IP Utilities10-2308631-14.00 Rev 005. Edit one or more of the following parameters:• Enable/Disable• Proxy Mode• Proxy Listen Port Number•

308631-14.00 Rev 00A-1 Appendix ASite Manager ParametersThis appendix contains the Site Manager parameter descriptions for TCP, FTP, TFTP, Telnet, NTP

Configuring IP UtilitiesA-2308631-14.00 Rev 00For each parameter, this appendix provides the following information:• Parameter name• Configuration Man

Site Manager Parameters308631-14.00 Rev 00A-3 TCP Global ParametersUse the following guidelines to configure TCP global parameters in the Configuratio

Configuring IP UtilitiesA-4308631-14.00 Rev 00Parameter: Max. Retransmission Timeout (msec.)Path: Configuration Manager > Protocols > Global Pro

Site Manager Parameters308631-14.00 Rev 00A-5 FTP Global ParametersUse the following guidelines to configure the parameters in the Edit FTP Global Par

Configuring IP UtilitiesA-6308631-14.00 Rev 00Parameter: Idle Time Out (secs)Path: Configuration Manager > Protocols > Global Protocols > FTP

Site Manager Parameters308631-14.00 Rev 00A-7 Parameter: Control ConnectionPath: Configuration Manager > Protocols > Global Protocols > FTP &

Configuring IP UtilitiesA-8308631-14.00 Rev 00TFTP ParametersUse the following guidelines to configure the parameters in the Edit TFTP Parameters wind

Site Manager Parameters308631-14.00 Rev 00A-9 Telnet Server Global ParametersUse the following guidelines to configure the Telnet server global parame

308631-14.00 Rev 00xvii PrefaceIP utilities are application protocols that use the Internet Protocol (IP) for message transport. This guide describes

Configuring IP UtilitiesA-10308631-14.00 Rev 00Parameter: TI Lines per ScreenPath: Configuration Manager > Protocols > Global Protocols > Tel

Site Manager Parameters308631-14.00 Rev 00A-11 Parameter: TI PromptPath: Configuration Manager > Protocols > Global Protocols > Telnet Server

Configuring IP UtilitiesA-12308631-14.00 Rev 00Parameter: Command Timeout (min.)Path: Configuration Manager > Protocols > Global Protocols >

Site Manager Parameters308631-14.00 Rev 00A-13 Parameter: Diagnostic ExercisePath: Configuration Manager > Protocols > Global Protocols > Tel

Configuring IP UtilitiesA-14308631-14.00 Rev 00Parameter: Diagnostic OptionsPath: Configuration Manager > Protocols > Global Protocols > Teln

Site Manager Parameters308631-14.00 Rev 00A-15 Parameter: Force User LogoutPath: Configuration Manager > Protocols > Global Protocols > Telne

Configuring IP UtilitiesA-16308631-14.00 Rev 00Telnet Client Global ParametersUse the following guidelines to configure the parameters in the Edit Tel

Site Manager Parameters308631-14.00 Rev 00A-17 NTP ParametersUse the following guidelines to configure NTP parameters.Parameter: Remote PortPath: Conf

Configuring IP UtilitiesA-18308631-14.00 Rev 00Parameter: ModePath: Configuration Manager > Protocols > Global Protocols > NTP > GlobalDef

Site Manager Parameters308631-14.00 Rev 00A-19 Parameter: Filter TypePath: Configuration Manager > Protocols > Global Protocols > NTP > Ac

Configuring IP Utilitiesxviii308631-14.00 Rev 00Text ConventionsThis guide uses the following text conventions:angle brackets (< >) Indicate tha

Configuring IP UtilitiesA-20308631-14.00 Rev 00Parameter: Local Host ModePath: Configuration Manager > Protocols > Global Protocols > NTP >

Site Manager Parameters308631-14.00 Rev 00A-21 NetBIOS Global ParametersUse the following guidelines to configure the parameters in the Edit NetBIOS/I

Configuring IP UtilitiesA-22308631-14.00 Rev 00Parameter: NetBIOS Name CachingPath: Configuration Manager > Protocols > IP > NetBIOS > Glo

Site Manager Parameters308631-14.00 Rev 00A-23 Parameter: Max Name Cache EntriesPath: Configuration Manager > Protocols > IP > NetBIOS > G

Configuring IP UtilitiesA-24308631-14.00 Rev 00Parameter: Hash Entry CountPath: Configuration Manager > Protocols > IP > NetBIOS > GlobalD

Site Manager Parameters308631-14.00 Rev 00A-25 NetBIOS/IP Interface Table ParametersUse the following guidelines to configure the parameters in the Ne

Configuring IP UtilitiesA-26308631-14.00 Rev 00Parameter: NetBIOS Name CachingPath: Configuration Manager > Protocols > IP > NetBIOS > Int

Site Manager Parameters308631-14.00 Rev 00A-27 NetBIOS/IP Static Entry Table ParametersUse the following guidelines to configure the parameters in the

Configuring IP UtilitiesA-28308631-14.00 Rev 00Parameter: NetBIOS Station NamePath: Configuration Manager > Protocols > IP > NetBIOS > Sta

Site Manager Parameters308631-14.00 Rev 00A-29 DNS Global ParametersThe Edit DNS Global Parameters window contains the global DNS parameters for the D

Preface308631-14.00 Rev 00xix AcronymsThis guide uses the following acronyms:italic text Indicates file and directory names, new terms, book titles, a

Configuring IP UtilitiesA-30308631-14.00 Rev 00Parameter: Max Outstanding QueryPath: Configuration Manager > Protocols > Global Protocols > D

Site Manager Parameters308631-14.00 Rev 00A-31 Parameter: Domain NamePath: Configuration Manager > Protocols > Global Protocols > DNS > Gl

Configuring IP UtilitiesA-32308631-14.00 Rev 00Parameter: Ignore Truncation ErrorPath: Configuration Manager > Protocols > Global Protocols >

Site Manager Parameters308631-14.00 Rev 00A-33 DNS Server Record ParametersThe DNS Server Record window contains the parameters that specify the appro

Configuring IP UtilitiesA-34308631-14.00 Rev 00DNS Proxy Server ParametersAs with the DNS global parameters, you first define a record for a DNS proxy

Site Manager Parameters308631-14.00 Rev 00A-35 Parameter: Proxy ModePath: Configuration Manager > Protocols > Global Protocols > DNS > DNS

Configuring IP UtilitiesA-36308631-14.00 Rev 00Parameter: DNS Server 2Path: Configuration Manager > Protocols > Global Protocols > DNS > D

Site Manager Parameters308631-14.00 Rev 00A-37 Parameter: Timeout (in seconds)Path: Configuration Manager > Protocols > Global Protocols > DN

Configuring IP UtilitiesA-38308631-14.00 Rev 00Parameter: Max. Outstanding Req.Path: Configuration Manager > Protocols > Global Protocols > D

Site Manager Parameters308631-14.00 Rev 00A-39 DNS Proxy Server ParametersThe DNS Proxy Server List window contains the DNS parameters for the DNS pro

ii308631-14.00 Rev 00 Copyright © 1999 Nortel NetworksAll rights reserved. Printed in the USA. October 1999.The information in this document is subjec

Configuring IP Utilitiesxx308631-14.00 Rev 00DoD Department of DefenseFIFO first in first outFTP File Transfer ProtocolGMT Greenwich mean timeIEEE Ins

Configuring IP UtilitiesA-40308631-14.00 Rev 00Parameter: Proxy Listen Port NumberPath: Configuration Manager > Protocols > Global Protocols >

Site Manager Parameters308631-14.00 Rev 00A-41 Parameter: DNS Server 3Path: Configuration Manager > Protocols > Global Protocols > DNS > D

Configuring IP UtilitiesA-42308631-14.00 Rev 00Parameter: Max. RetransmissionsPath: Configuration Manager > Protocols > Global Protocols > DN

Site Manager Parameters308631-14.00 Rev 00A-43 IP Accounting ParametersUse the following guidelines to configure the IP accounting parameters in the E

Configuring IP UtilitiesA-44308631-14.00 Rev 00Parameter: ThresholdPath: Configuration Manager > Protocols > IP > GlobalDefault: 512Options:

308631-14.00 Rev 00B-1 Appendix BConfiguring IP Accounting ona Frame Relay InterfaceIP accounting is a mechanism for counting transit data packets --

Configuring IP UtilitiesB-2308631-14.00 Rev 00The following sections describe how to configure IP accounting on a frame relay interface: Enabling IP A

Configuring IP Accounting on a Frame Relay Interface308631-14.00 Rev 00B-3 Specifying the Maximum Size of the IP Accounting TableBy default, the IP ac

Configuring IP UtilitiesB-4308631-14.00 Rev 00Copying the IP Accounting Table to the Checkpoint TableWhen the IP accounting table is filled to capacit

308631-14.00 Rev 00C-1 Appendix CConfiguring IP Global Access PoliciesUsing the BCC, you can create global IP access policies that permit or deny acce

Preface308631-14.00 Rev 00xxi Hard-Copy Technical ManualsYou can print selected technical manuals and release notes free, directly from the Internet.

Configuring IP UtilitiesC-2308631-14.00 Rev 00Creating and Naming the Policy To create an IP global access policy, navigate to the IP global prompt (f

Configuring IP Global Access Policies308631-14.00 Rev 00C-3 Specifying the Policy ActionBy default, the policy denies access to the IP utility that yo

Configuring IP UtilitiesC-4308631-14.00 Rev 00Specifying the Network to Which the Policy AppliesYou must specify the IP address or range of contiguous

Configuring IP Global Access Policies308631-14.00 Rev 00C-5 Disabling and Reenabling LoggingBy default, the IP global access policy turns message logg

308631-14.00 Rev 00D-1 Appendix DBCC show CommandsTo display configuration and statistical data about DNS, FTP, NTP, TCP, Telnet, and TFTP from the ma

Configuring IP UtilitiesD-2308631-14.00 Rev 00Online Help for show CommandsTo display a list of command options, enter one of these commands at any BC

BCC show Commands308631-14.00 Rev 00D-3 show dns statsThe show dns stats command displays the DNS counters. The output includes the following informat

Configuring IP UtilitiesD-4308631-14.00 Rev 00show ntp accessThe show ntp access command displays information about the Network Time Protocol (NTP) se

BCC show Commands308631-14.00 Rev 00D-5 show ntp baseThe show ntp base command displays the base record information for the NTP client running on the

Configuring IP UtilitiesD-6308631-14.00 Rev 00show ntp statsThe show ntp stats command displays information about the number of: • Polls (requests for

BCC show Commands308631-14.00 Rev 00D-7 show tcp stats The show tcp stats command displays information about the TCP configuration. The output include

Configuring IP UtilitiesD-8308631-14.00 Rev 00show telnetThe show telnet command displays information about Telnet services. The output includes the f

BCC show Commands308631-14.00 Rev 00D-9 show tftp The show tftp command displays information about the Trivial File Transfer Protocol (TFTP) status. T

308631-14.00 Rev 00Index-1Numbers15-Character NetBIOS Name Caching parameter, 8-5, A-22Aacronyms, xixAnswer Truncation parameter (DNS proxy), A-38, A-

Index-2308631-14.00 Rev 00Enable/Disable parameterDNS proxy, A-39FTP, A-5NetBIOS global, A-21NetBIOS interface, A-25NTP, A-17TCP, A-3Telnet client, A-

308631-14.00 Rev 00Index-3NetBIOS over IP (continued)size of name cache for, 8-7starting on the router, 1-11TTL value for a rebroadcast packet, 8-2Net

Index-4308631-14.00 Rev 00Telnetcustomizing, 6-1overview, 2-11show command, D-8starting, 1-8Telnet Client Global parametersdescriptions of, A-16Enable

308631-14.00 Rev 001-1Chapter 1Starting IP UtilitiesThis chapter describes how to create a basic TCP, FTP, TFTP, Telnet, NTP, DNS, or NetBIOS over IP

Configuring IP Utilities1-2308631-14.00 Rev 00Starting Configuration ToolsBefore configuring TCP, FTP, TFTP, Telnet, NTP, DNS, or NetBIOS over IP serv

Starting IP Utilities308631-14.00 Rev 001-3•slot_number is the number of the slot in which the link or net module is located.•module_number is the net

Configuring IP Utilities1-4308631-14.00 Rev 00When you have successfully configured the circuit, the Select Protocols window opens. Proceed as follows

Starting IP Utilities308631-14.00 Rev 001-53.Display TCP default settings.tcp# infomin-rto 250 max-rto 240000 max-win 4096state enabledtcp#Using S

Configuring IP Utilities1-6308631-14.00 Rev 002.Display FTP default settings.ftp# infodefault-volume 2 login-retries 3 idle-timeout 900 max-sessions

Starting IP Utilities308631-14.00 Rev 001-7Using the BCCTo start TFTP on the router with default settings, begin in configuration mode at the box or s

308631-14.00 Rev 00iiiNortel Networks NA Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using t

Configuring IP Utilities1-8308631-14.00 Rev 00Starting Telnet ServicesYou can use the BCC or Site Manager to configure Telnet services on the router,

Starting IP Utilities308631-14.00 Rev 001-92.Display Telnet client default settings.client# infodebug-log-flag off remote-port 23 prompt {}state e

Configuring IP Utilities1-10308631-14.00 Rev 00Starting NTP ServicesYou can use the BCC or Site Manager to configure NTP on the router, accepting defa

Starting IP Utilities308631-14.00 Rev 001-11Using Site ManagerTo start NTP services, complete the following tasks:Starting NetBIOS over IPYou can star

Configuring IP Utilities1-12308631-14.00 Rev 00Starting the DNS ClientYou can use the BCC or Site Manager to configure DNS client services on the rout

Starting IP Utilities308631-14.00 Rev 001-13After you create and enable the DNS client, you must specify at least one DNS server. You can specify up t

Configuring IP Utilities1-14308631-14.00 Rev 00After you create and enable the DNS client, you must specify at least one DNS server. You can specify u

Starting IP Utilities308631-14.00 Rev 001-15Starting the DNS Proxy ServerYou can use Site Manager to configure DNS proxy server services on the router

308631-14.00 Rev 002-1 Chapter 2Overview of IP UtilitiesThis chapter describes the concepts behind TCP, FTP, TFTP, Telnet, NTP, DNS, and NetBIOS over

iv308631-14.00 Rev 00for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconstruct

Configuring IP Utilities2-2308631-14.00 Rev 00The Nortel Networks implementation of TCP generally ensures good terminal server performance on slow-spe

Overview of IP Utilities308631-14.00 Rev 002-3 TCP FeaturesBecause IP does not always guarantee reliable transfer of data, TCP implements several reli

Configuring IP Utilities2-4308631-14.00 Rev 00Connection TypesTCP is a connection-oriented protocol that requires application programs at both ends of

Overview of IP Utilities308631-14.00 Rev 002-5 TCP Memory ConsiderationsThe Transmission Control Protocol requires a significant amount of memory to:•

Configuring IP Utilities2-6308631-14.00 Rev 00The value you set for the maximum window size depends on how much memory you need for services other tha

Overview of IP Utilities308631-14.00 Rev 002-7 The interface between TCP and programs that use TCP consists of a set of messages exchanged between the

Configuring IP Utilities2-8308631-14.00 Rev 00How FTP WorksThe FTP client initiates an FTP session with the FTP server on the router. The session esta

Overview of IP Utilities308631-14.00 Rev 002-9 Table 2-3 describes the FTP commands that the FTP server supports on Nortel Networks routers.Table 2-3.

Configuring IP Utilities2-10308631-14.00 Rev 00TFTP OverviewThe Trivial File Transfer Protocol (TFTP) is a TCP/IP standard protocol for transferring f

Overview of IP Utilities308631-14.00 Rev 002-11 Both devices involved in a TFTP transfer are senders and receivers. One device sends data and receives

308631-14.00 Rev 00vContentsPrefaceBefore You Begin ...

Configuring IP Utilities2-12308631-14.00 Rev 00To use Telnet to access the Technician Interface, you must assign at least one IP address to the router

Overview of IP Utilities308631-14.00 Rev 002-13 Figure 2-3. Telnet ServerTelnet ClientWhen you create a Telnet client, the router sends outbound reque

Configuring IP Utilities2-14308631-14.00 Rev 00Figure 2-4. Telnet ClientTCP0005ATCPconnection$Outbound Telnet sessionTelnet (server)Telnet (client)Con

Overview of IP Utilities308631-14.00 Rev 002-15 NTP OverviewThe Network Time Protocol (NTP) synchronizes the timing of internal clocks of various netw

Configuring IP Utilities2-16308631-14.00 Rev 00There are two types of time servers in the NTP model: primary time servers and secondary time servers.

Overview of IP Utilities308631-14.00 Rev 002-17 How NTP Distributes Time Within the SubnetNTP distributes time through a hierarchy of primary and seco

Configuring IP Utilities2-18308631-14.00 Rev 00NTP uses the following criteria to determine the time server whose time is best:• Time server with the

Overview of IP Utilities308631-14.00 Rev 002-19 Figure 2-6. NTP Time Servers Operating in Unicast Client Mode Broadcast and Multicast Client ModeIn br

Configuring IP Utilities2-20308631-14.00 Rev 00NetBIOS OverviewThe Network Basic Input/Output System (NetBIOS) is a session layer communications servi

Overview of IP Utilities308631-14.00 Rev 002-21 • Use a server’s NetBIOS name to determine the server’s network address. The application issues a name

vi308631-14.00 Rev 00Connections and Connection States ...2-4TCP Memory Considerations

Configuring IP Utilities2-22308631-14.00 Rev 00The following steps occur:1. The client issues a name query request to NetBIOS on the host, specifying

Overview of IP Utilities308631-14.00 Rev 002-23 The server responds to the name query request by issuing a positive name query response, containing th

Configuring IP Utilities2-24308631-14.00 Rev 00Forwarding Name Queries over an Unnumbered InterfaceNetBIOS cannot be configured directly on an unnumbe

Overview of IP Utilities308631-14.00 Rev 002-25 How the DNS Proxy Server WorksClients on a LAN typically use DNS servers to resolve a host name to an

Configuring IP Utilities2-26308631-14.00 Rev 00DNS responses can contain several answers to the client question, although most DNS clients use only th

308631-14.00 Rev 003-1 Chapter 3Customizing TCP ServicesThis chapter describes how to customize TCP services on the router. It assumes you have config

Configuring IP Utilities3-2308631-14.00 Rev 00Disabling and Reenabling TCPAfter you configure IP and start TCP, all TCP default parameters are automat

Customizing TCP Services308631-14.00 Rev 003-3 Setting the Minimum Retransmission TimeoutYou can specify a minimum value for the retransmission timeou

Configuring IP Utilities3-4308631-14.00 Rev 00Using Site ManagerComplete the tasks in the following table to specify a value for the minimum retransmi

Customizing TCP Services308631-14.00 Rev 003-5 For example, the following command sets the value for the maximum retransmission timeout to 235,000 ms:

308631-14.00 Rev 00viiSpecifying the FTP Default Volume ...4-3Specifying

Configuring IP Utilities3-6308631-14.00 Rev 00Setting the Maximum Window SizeYou can specify a value in bytes to determine the maximum transmit-and-re

Customizing TCP Services308631-14.00 Rev 003-7 5. Set the Max. Window Size (bytes) parameter. Click on Help or see the parameter description on page A

308631-14.00 Rev 004-1 Chapter 4Customizing FTP ServicesThis chapter describes how to customize FTP services on the router. It assumes you have config

Configuring IP Utilities4-2308631-14.00 Rev 00Configuring FTP Using the BCC or Site ManagerTable 4-1 lists the FTP configuration tasks described in th

Customizing FTP Services308631-14.00 Rev 004-3 For example, the following command line reenables FTP on the router.ftp# enableftp#Using Site ManagerCo

Configuring IP Utilities4-4308631-14.00 Rev 00For example, the following command sequence specifies volume 5 as the default volume and displays attrib

Customizing FTP Services308631-14.00 Rev 004-5 Specifying the Number of Login RetriesThe FTP login retries value is the number of FTP login retries th

Configuring IP Utilities4-6308631-14.00 Rev 00Specifying the Maximum FTP Idle TimeoutThe FTP idle time is the length of time (in seconds) that FTP wai

Customizing FTP Services308631-14.00 Rev 004-7 Specifying the Maximum Number of FTP SessionsYou can determine the maximum number of FTP sessions you w

viii308631-14.00 Rev 00Enabling Diagnostic Exercise ...6-16Enabling Diagnosti

Configuring IP Utilities4-8308631-14.00 Rev 00Specifying the Data Transmission TypeYou can determine the type of data transmission you want to use to

Customizing FTP Services308631-14.00 Rev 004-9 Specifying a Data Transfer ValueYou can determine how the Internet transport layer handles datagrams on

Configuring IP Utilities4-10308631-14.00 Rev 00Specifying the TCP Window SizeYou can determine the size of the window you require on your system for T

308631-14.00 Rev 005-1 Chapter 5Customizing TFTP ServicesThis chapter describes how to customize Trivial File Transfer Protocol (TFTP) services on the

Configuring IP Utilities5-2308631-14.00 Rev 00Disabling and Reenabling TFTP ServicesAfter you configure IP and start TFTP on the router, TFTP is enabl

Customizing TFTP Services308631-14.00 Rev 005-3 Specifying the Default Volume for the RouterWhen you configure TFTP on the router, you can specify whi

Configuring IP Utilities5-4308631-14.00 Rev 00Specifying a Retry Timeout ValueYou can specify the amount of time (in seconds) that TFTP waits for an a

Customizing TFTP Services308631-14.00 Rev 005-5 Specifying a Close Timeout ValueYou can specify the number of seconds that TFTP waits, after it has su

Configuring IP Utilities5-6308631-14.00 Rev 00Specifying the Number of RetransmissionsYou can specify the number of times that TFTP retransmits an una

Customizing TFTP Services308631-14.00 Rev 005-7 Deleting TFTP from the RouterYou can use the BCC or Site Manager to delete TFTP from the router.Using

308631-14.00 Rev 00ixSpecifying the Size of the Name Cache ...8-7Aging a Cache Entry .

308631-14.00 Rev 006-1 Chapter 6Customizing Telnet ServicesThis chapter describes how to customize Telnet services on the router. It assumes you have

Configuring IP Utilities6-2308631-14.00 Rev 00Configuring Telnet Using the BCC or Site ManagerTable 6-1 lists the Telnet configuration tasks described

Customizing Telnet Services308631-14.00 Rev 006-3 Customizing the Telnet ConfigurationAfter you start the Telnet server to establish inbound Telnet se

Configuring IP Utilities6-4308631-14.00 Rev 00Using Site ManagerComplete the tasks in the following table to specify a new manager’s login script file

Customizing Telnet Services308631-14.00 Rev 006-5 Using Site ManagerComplete the tasks in the following table to specify a new user’s login script fil

Configuring IP Utilities6-6308631-14.00 Rev 00For example, this command line allows users to cancel the user autoscript at login:server# force-logout

Customizing Telnet Services308631-14.00 Rev 006-7 For example:telnet# serverserver# disableTo reenable a Telnet server on the IP router, navigate to t

Configuring IP Utilities6-8308631-14.00 Rev 00Specifying the Maximum Number of Lines on the ConsoleYou can specify the maximum number of lines display

Customizing Telnet Services308631-14.00 Rev 006-9 Pausing Telnet Console OutputBy default, Telnet console output pauses after each screen fills with d