Avaya TCP User Manual

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Configuring TCP Services

Router Software Version 10.0

Site Manager Software Version 4.0

Software Version BNX 6.0

Site Manager Software Version BNX 6.0

Part No. 112925 Rev. A

January 1996

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(continued)

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8 Federal Street, Billerica, MA 01821

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Contents

About This Guide

Software Suites ................................................................................................................ xi

Audience ...........................................................................................................................xii

Before You Begin ..............................................................................................................xii

Bay Networks Customer Support .....................................................................................xii

CompuServe .............................................................................................................xiii

InfoFACTS .................................................................................................................xiv

World Wide Web ........................................................................................................xiv

How to Get Help ..............................................................................................................xiv

Conventions .....................................................................................................................xiv

Ordering Bay Networks Publications ............................................................................... xv

Acronyms .........................................................................................................................xvi

Chapter 1 Transmission Control Protocol Overview

Reliability ........................................................................................................................1-1

Connection Types ...........................................................................................................1-2

Connections and Connection States ..............................................................................1-3

TCP and IP Service Users .............................................................................................1-4

Telnet .............................................................................................................................. 1-5

File Transfer Protocol ......................................................................................................1-5

For More Information about TCP ....................................................................................1-8

Chapter 2 TCP Implementation Notes

Memory Considerations ..................................................................................................2-1

Chapter 3 Editing TCP, Telnet, and FTP Parameters

Conﬁguring and Customizing TCP .................................................................................3-2

Creating TCP ...........................................................................................................3-2

Editing TCP Global Parameters ...............................................................................3-3

TCP Global Parameter Descriptions ........................................................................3-4

Deleting TCP from the Router ..................................................................................3-6

Conﬁguring and Customizing the Telnet Server .............................................................3-6

Creating a Telnet Server ...........................................................................................3-6

Telnet Conﬁguration Parameter Descriptions ...........................................................3-7

Editing Telnet Server Global Parameters .................................................................3-8

Telnet Server Global Parameter Descriptions ..........................................................3-9

Deleting a Telnet Server from the Router ...............................................................3-16

Conﬁguring and Customizing the Telnet Client .............................................................3-16

Creating a Telnet Client ..........................................................................................3-16

Editing Telnet Client Global Parameters .................................................................3-16

Telnet Client Global Parameter Descriptions .........................................................3-17

Deleting a Telnet Client from the Router ................................................................3-18

Conﬁguring and Customizing the FTP Server ..............................................................3-19

Creating an FTP Server .........................................................................................3-19

Editing FTP Global Parameters .............................................................................3-19

FTP Global Parameter Descriptions ......................................................................3-20

Deleting the FTP Server from the Router ..............................................................3-23

Appendix A Site Manager Default Settings

TCP Parameters ............................................................................................................ A-1

Telnet Parameters .......................................................................................................... A-2

FTP Parameters ............................................................................................................ A-3

Index

Figures

Figure 1-1. TCP between IP and Clients ....................................................................1-4

Figure 1-2. FTP Client and Server .............................................................................1-6

Figure 3-1. Conﬁguration Manager Window ...............................................................3-3

Figure 3-2. Edit TCP Global Parameters Window ......................................................3-4

Figure 3-3. Telnet Conﬁguration Window ...................................................................3-7

Figure 3-4. Edit Telnet Server Global Parameters Window ........................................3-9

Figure 3-5. Edit Telnet Client Global Parameters Window ........................................3-17

Figure 3-6. Edit FTP Global Parameters Window ....................................................3-19

vii

Tables

Table 1-1. TCP Connection States ...........................................................................1-3

Table 1-2. FTP Commands Supported by the FTP Server .......................................1-7

Table A-1. TCP Conﬁguration Parameters ............................................................... A-1

Table A-2. Telnet Server Conﬁguration Parameters ................................................. A-2

Table A-3. Telnet Client Conﬁguration Parameters .................................................. A-2

Table A-4. FTP Conﬁguration Parameters ............................................................... A-3

About This Guide

If you are responsible for conﬁguring and managing Bay Networks routers or BNX platforms, read this guide to discover how to customize Bay Networks router software for Transmission Control Protocol (TCP) services.

Conﬁguring TCP Services

• An overview of TCP (see Chapter 1)

• Implementation notes that may affect how you conﬁgure TCP services (see Chapter 2)

• Instructions on editing TCP, Telnet, and FTP parameters (see Chapter 3)

Software Suites

Routing and Switching software is available in the following suites:

• The Bridge, Translation Bridge, SNMP Agent, Bay Networks HDLC, PPP, OSPF, EGP, BGP, and basic DLSw.

• The IPX, and ATM DXI, in addition to the System Suite.

• The addition to the System Suite.

• The entirety.

• The signaling, in addition to the LAN Suite.

System Suite

LAN Suite

WAN Suite

Corporate Suite

ARE ATM Suite

includes IP routing, 802.1 Transparent Bridge, Source Route

includes DECnet Phase 4, AppleTalk Phase 2, OSI, VINES,

includes ATM DXI, Frame Relay, LAPB, and X.25, in

offers

includes the System, LAN, and WAN suites in their

provides RFC 1483 and 1577 compliance, ATM UNI 3.0

• The

ARE VNR Corporate Suite

addition to the ARE ATM Suite and Corporate Suite.

provides ATM Forum LAN Emulation, in

Configuring TCP Services

• The PPP, OSPF, EGP, BGP, File-Based Performance Statistics, Frame Relay switching, and Frame Relay billing, and selected components from the Corporate, ARE A TM, and ARE VNR Corporate suites.

Availability of features and functionality described in this guide depends on the suites you are using.

Audience

Written for system and network managers, this guide describes how to conﬁgure the Bay Networks implementation of TCP services to suit your environment.

Before Y ou Begin

Before using this guide, you must complete the following procedures:

• Create and save a conﬁguration ﬁle that has at least one IP interface.

• Retrieve the conﬁguration ﬁle in local, remote, or dynamic mode.

Refer to

Software)

BNX Suite

Conﬁguring Routers

, depending on the type of installed software, for instructions.

includes IP Routing, SNMP Agent, Bay Networks HDLC,

Conﬁguring Customer Access and Trunks (BNX

Bay Networks Customer Support

Bay Networks provides live telephone technical support to our distributors, resellers, and service-contracted customers from two U.S. and three international support centers. If you have purchased your Bay Networks product from a distributor or authorized reseller, contact the technical support staff of that distributor or reseller for assistance with installation, conﬁguration, troubleshooting, or integration issues.

Customers also have the option of purchasing direct support from Bay Networks through a variety of service programs. The programs include priority access telephone support, on-site engineering assistance, software subscription, hardware replacement, and other programs designed to protect your investment.

xii

CompuServe

About This Guide

To purchase any of these support programs, including PhonePlus™ for 24-hour telephone technical support, call 1-800-2LANWAN. Outside the U.S. and Canada, call (408) 764-1000. You can also receive information on support programs from your local Bay Networks ﬁeld sales ofﬁce, or purchase Bay Networks support directly from your reseller. Bay Networks provides several methods of receiving support and information on a nonpriority basis through the following automated systems.

Bay Networks maintains an active forum on CompuServ e. All you need to join us online is a computer, a modem, and a CompuServe account. We also recommend using the CompuServe Information Manager software, available from CompuServe.

The Bay Networks forum contains libraries of technical and product documents designed to help you manage and troubleshoot your Bay Networks products. Software agents and patches are available, and the message boards are monitored by technical staff and can be a source for problem solving and shared experiences.

Customers and resellers holding Bay Networks service contracts can visit the special libraries to acquire advanced levels of support documentation and software.

To open an account and receive a local dial-up number, call CompuServe at 1-800-524-3388 and ask for Representative No. 591.

• In the United Kingdom, call Freephone 0800-289378.

• In Germany, call 0130-37-32.

• In Europe (except for the United Kingdom and Germany), call (44) 272-760681.

• Outside the U.S., Canada, and Europe, call (614) 529-1349 and ask for Representative No. 591, or consult your listings for an ofﬁce near you.

Once you are online, you can reach our forum by typing the command GO BAYNETWORKS at any ! prompt.

xiii

Configuring TCP Services

InfoFACTS

InfoFACTS is the Bay Networks free 24-hour fax-on-demand service. This automated system contains libraries of technical and product documents designed to help you manage and troubleshoot your Bay Networks products. The system can return a fax copy to the caller or to a third party within minutes of being accessed.

W orld Wide Web

The World Wide Web (WWW) is a global information system for ﬁle distribution and online document viewing via the Internet. You need a direct connection to the Internet and a Web Browser (such as Mosaic or Netscape).

Bay Networks maintains a WWW Home Page that you can access at http:// www.baynetworks.com. One of the menu items on the Home Page is the Customer Support Web Server, which offers technical documents, software agents, and an E-mail capability for communicating with our technical support engineers.

How to Get Help

For additional information or advice, contact the Bay Networks Technical Response Center in your area:

United States 1-800-2LAN-WAN Valbonne, France (33) 92-966-968 Sydney, Australia (61) 2-903-5800 Tokyo, Japan (81) 3-328-005

Conventions

This section describes the conventions used in this guide. angle brackets (< >) Indicate that you choose the text to enter based on the

xiv

description inside the brackets. Do not type the brackets when entering the command. Example: if

ping

command syntax is

192.32.10.12

<ip_address>

, you enter

ping

About This Guide

arrow character (➔) Separates menu and option names in instructions.

➔

Example: Protocols

AppleTalk identiﬁes the

AppleTalk option in the Protocols menu.

bold text

Indicates text that you need to enter and command

dinfo

names in text. Example: Use the

command.

brackets ([ ]) Indicate optional elements. You can choose none, one,

or all of the options.

italic text

Indicates variable values in command syntax descriptions, new terms, ﬁle and directory names, and book titles.

quotation marks (“ ”) Indicate the title of a chapter or section within a book.

screen text

ellipsis points Horizontal (. . .) and vertical ellipsis points indicate

Indicates data that appears on the screen. Example:

Bay Networks Trap Monitor Filters

()

Set

omitted information.

vertical line (|) Indicates that you enter only one of the parts of the

command. The vertical line separates choices. Do not type the vertical line when entering the command.

Example: If the command syntax is

show at routes show at routes

nets

, you enter either

show at nets

, but not both.

Ordering Bay Networks Publications

To purchase additional copies of this document or other Bay Networks publications, order by part number from Bay Networks Press™ at the following numbers. You may also request a free catalog of Bay Networks Press product publications.

Phone: 1-800-845-9523 FAX - U.S./Canada: 1-800-582-8000 FAX - International: 1-916-939-1010

Configuring TCP Services

Acronyms

ANSI American National Standards Institute ARP Address Resolution Protocol ATM Asynchronous Transfer Mode BGP Border Gateway Protocol CMIP Common Management Information Protocol DLSw data link switching EGP Exterior Gateway Protocol FDDI Fiber Distributed Data Interface FTP File Transfer Protocol IEEE Institute of Electrical and Electronic Engineers ILI intelligent link interface IP Internet Protocol MAC Media Access Control MOP Maintenance Operations Protocol OSI Open Systems Interconnection OSPF Open Shortest Path First PVCs permanent virtual circuits QENET Quad Ethernet Link Module RIP Routing Information Protocol SMDS Switched Multimegabit Data Services SNAP Subnetwork Access Protocol SNMP Simple Network Management Protocol SRM system resource modules SVCs switched virtual circuits TCP Transmission Control Protocol TCP/IP Transmission Control Protocol/Internet Protocol TFTP Trivial File Transfer Protocol

xvi

Chapter 1

Transmission Control Protocol Overview

In the 1970s, the Defense Advanced Research Projects Agency (DARPA) of the U.S. Department of Defense developed the Transmission Control Protocol (TCP) to provide communication among hosts manufactured by different vendors.

DARPA designed TCP to work within a layered hierarchy of networking protocols, using the Internet Protocol (IP) to transfer data.

This chapter introduces TCP concepts, features, and terminology and consists of the following sections:

• “Reliability”

• “Connection Types”

Reliability

• “Connections and Connection States”

• “TCP and IP Service Users”

• “Telnet”

• “File Transfer Protocol”

Since IP does not always guarantee reliable transfer of data, TCP implements several features to ensure that data arri ves at its destination uncorrupted and in the order sent. These features include

Sequence numbers.

• transmits. The receiving host uses the sequence numbers to make sure that all the data arrives in order.

TCP assigns a sequence number to each data segment it

1-1

Configuring TCP Services

•

Out-of-order caching.

sequential order and forwards them to the receiving TCP client. If TCP does not receive one or more segments and cannot complete the sequential ordering, it stores the remaining segments in cache memory for as long as the TCP connection exists. When TCP recei ves the missing segments, it takes the stored segments from cache memory, puts them into sequential order with the newly receiv ed segments, and then forw ards them to the recei ving TCP client. Out-of-order caching ensures that data arrives in the correct order while saving bandwidth and retransmission time.

As TCP receives data segments, it puts them in

Checksums.

• checksum to each segment it transmits. The receiving host recalculates the checksum, and if there is damage, discards the segment.

Flow control.

• data is sent to it. To activate ﬂow control, the receiving host advertises a

window

window is full, the sending host must stop sending data until the receiving host can open the window again. To control the rate of data transfer on your TCP connections, you can specify the maximum window size allowed for each connection.

Acknowledgment with retransmission.

• acknowledge that it has receiv ed the data. If the sending host does not receive an acknowledgment within a set timeout interval, the sending station retransmits the data. TCP determines the timeout interval by estimating the average time it takes to send a segment and receive an acknowledgment for it.

Connection T ypes

TCP allows both

TCP client

connection requests. Clients using passive opens can listen for speciﬁc connection requests or for a range of inbound requests. In an active open, the client initiates the connection.

To ensure the integrity of the data, the sending host adds a

Flow control allows the receiving host to regulate how much

that indicates how much data it can accept. When the transmit

TCP requires the receiving host to

active

and

passive

(the process or program that uses TCP) waits to accept incoming

connections (or

opens

). For passive opens, a

1-2

Connections and Connection States

Transmission Control Protocol Overview

TCP establishes a set of access points, referred to as associates each port with a network and host address to form a

ports

, for each host. It

socket

. A pair of sockets, together with sequence numbers, window sizes, and status information, form a

TCP connection

Table 1-1 lists the states through which a TCP connection proceeds during its lifetime.

Table 1-1. TCP Connection States

State Deﬁnition

LISTEN (2) TCP listens for a connection request from any remote TCP. SYN SENT (3) TCP sent a connection request (SYN segment) and waits for a

matching connection request and acknowledgment from the remote TCP.

SYNRECEIVED (4) TCP sent a connection request, received a matching request,

and waits for a conﬁrming connection request acknowledgment from the remote TCP.

ESTABLISHED (5) Connection open. Data can be received and sent. This is the

normal state for the data transfer phase of the connection.

FINWAIT-1 (6) TCP waits for a connection termination request (FIN segment)

from the remote TCP, or for an acknowledgment of a previously sent connection termination request.

FINWAIT-2 (7) TCP waits for a connection termination request from the remote

TCP. CLOSEWAIT (8) TCP waits for a connection termination request from the client. CLOSING (10) TCP waits f or a connection termination request ackno wledgment

from the remote TCP. LASTACK (9) TCP waits for acknowledgment of the connection termination

request previously sent to the remote TCP. TIMEWAIT (11) TCP waits for enough time to pass to ensure that the remote TCP

received the acknowledgment of its connection termination

request. CLOSED (1) No connection.

1-3

Configuring TCP Services

TCP and IP Service Users

TCP is the layer or service between IP, at the lower layer in the hierarchy of network protocols, and programs running at higher layers in the hierarchy. Figure 1-1 shows a simple network architecture with four users of TCP/IP services: the Data Link Switching Service (DLSw), Telnet, FTP, and the Border Gateway Protocol (BGP).

Telnet BGPDLSw FTP

Figure 1-1. TCP between IP and Clients

TCP

1-4

The interface between TCP and programs that use TCP consists of a set of messages exchanged between the clients and TCP, and a set of functions and macros that user programs call to exchange TCP messages. These programs use the functions and macros to

• Open, close, abort, and get the status of connections

• Control the ﬂow of data

• Encapsulate data for TCP to transmit

• Process received TCP data When a program passes data to TCP, the TCP layer formats the data and calls on

the IP layer to transmit the data to its destination. For information on creating TCP on the router and editing TCP parameters, refer

to “Conﬁguring and Customizing TCP” in Chapter 3.

Telnet

Transmission Control Protocol Overview

Telnet allows you to access the Technician Interface. You can execute Technician Interface commands from a remote host (inbound Telnet) or originate an outgoing Telnet session (outbound Telnet) to another Bay Networks router or network device that accepts Telnet. You use outbound T elnet to access remote routers when Site Manager or Simple Network Management Protocol (SNMP) is unavailable.

To use Telnet to access the Technician Interface, you must assign at least one IP address to the router. The number of Telnet connections you can make to the T echnician Interface is limited only by the av ailability of system resources (that is, system memory).

Note:

We recommend that you establish no more than one Telnet session per

router.

For information on creating Telnet on the router and editing Telnet parameters, refer to “Conﬁguring and Customizing the Telnet Server” and “Conﬁguring and Customizing the Telnet Client” in Chapter 3.

For complete information about accessing and using the Technician Interface with Telnet, see

Using Technician Interface Software.

File T ransfer Protocol

The File Transfer Protocol (FTP) allows you to

• Download ﬁles from your host system to a remote router and retrieve ﬁles from the router

• Examine the directory listing of ﬁles on the remote router

• Delete ﬁles on the router

The FTP client residing on your host and the FTP server residing on the router rely on the underlying support of TCP and IP for the reliable, sequenced transfer of data and control messages.

1-5

Configuring TCP Services

The FTP client on your host initiates an FTP session with an FTP server on the router. The session establishes two separate connections between host and router: a control connection and a data connection (Figure 1-2).

Host

FTP

Client

TCP TCP

IP IP

LAN/WAN

Key

Control connection

Data connection

Router

FTP

Server

1-6

Figure 1-2. FTP Client and Server

Table 1-2 describes the FTP commands that the FTP server supports on Bay Networks routers.

Transmission Control Protocol Overview

Table 1-2. FTP Commands Supported by the FTP Server

Command Code Description

Access Control Commands

User Name USER Initiates an FTP session for the user. Password PASS Speciﬁes a user’s encrypted identiﬁcation for access control. Logout QUIT Terminates the session and closes the control connection.

Transfer Parameter Commands

Data Port PORT Speciﬁes the data port to be used in the data connection. Representation

Type Transfer Mode MODE Speciﬁes the transfer mode. The server supports stream

File Structure STRU Speciﬁes the ﬁle structure type. The server supports ﬁle (no

FTP Service Commands

Retrieve RETR Causes the server to transfer the speciﬁed ﬁle to the client. Abort ABOR Causes the server to abort the previous FTP service

Store STOR Causes the server to accept the data transferred over the

Store Unique STOU Speciﬁes the same operation as the Store command and, in

Delete DELE Causes the server to delete the speciﬁed ﬁle on the server. List LIST Causes the server to send to the client a detailed list of ﬁles. Name List NLIST Causes the server to send to the client a list of ﬁlenames. Status STAT Causes the server to send to the client the control connection

Help HELP Provides helpful information. No Operation NOOP Speciﬁes no action. Causes the server to send an OK reply. Change Working

For More Information about TCP

If you would like more information about the Transmission Control Protocol, refer to

Comer, Douglas E. Internetworking with TCP/IP, Volume I: Principles, Protocols, and Architecture. Englewood Cliffs, New Jersey: Prentice Hall, Inc., Second Edition, 1991.

1-8

This chapter contains speciﬁc implementation notes to keep in mind when you conﬁgure Bay Networks TCP services.

Memory Considerations

The Transmission Control Protocol requires a signiﬁcant amount of memory to

• Retain copies of outbound data in case they must be retransmitted

• Retain copies of inbound data in case they are received out of order and must be rearranged

• Manage the TCP connections

Chapter 2

TCP Implementation Notes

The amount of memory used per TCP connection is dynamic. Each connection uses a small amount of overhead memory (less than 1 KB), ev en if the connection is idle. As the size of the transmit-and-receive window increases, so does the memory for connections. It expands as much as TCP allows.

You can control the window size by setting a value for the Max. Window Size parameter in the Edit TCP Global Parameters window (see Chapter 3). The maximum amount of memory TCP can use for a connection is equal to the overhead memory plus twice the window size (because the windo w can ﬁll in both directions).

The value you set for Max. W indo w Size depends on ho w much memory you need for services other than TCP. If you have a complicated conﬁguration, specify a low Max. Window Size value for TCP connections since space is limited. Systems with less involved conﬁgurations can support more TCP connections and a higher Max. Window Size value.

2-1

Configuring TCP Services

If TCP consumes too much memory on the router, connections slo w do wn or e v en abort. TCP uses feedback mechanisms to indicate to clients when resources are becoming scarce. However, if clients disregard this feedback, TCP has to break connections. TCP attempts to monitor the connections consuming the most memory and break those ﬁrst to maintain connections consuming less memory.

2-2

Chapter 3

Editing TCP, Telnet, and FTP Parameters

Once you enable IP on your router, you can use Site Manager to create TCP, Telnet, and FTP on the router and customize TCP, Telnet, and FTP parameters.

For each TCP, Telnet, and FTP parameter, this manual provides default settings, valid parameter options, the parameter function, instructions for setting the parameter, and the Management Information Base (MIB) object ID.

The Technician Interface lets you modify parameters by issuing set and commit commands that specify the MIB object ID. This process is equivalent to modifying parameters using Site Manager. For more information about using the Technician Interface to access the MIB, refer to Using Technician Interface Software.

Caution: The Technician Interface does not verify that the value you enter for

a parameter is valid. Entering an invalid value can corrupt your conﬁguration.

To enable IP on the router, see Conﬁguring IP Services. To conﬁgure and customize TCP on the router, see the following sections:

• “Creating TCP”

• “Editing TCP Global Parameters”

• “Deleting TCP from the Router”

To conﬁgure and customize Telnet on the router, see the following sections:

• “Creating a Telnet Server”

• “Editing Telnet Server Global Parameters”

• “Deleting a Telnet Server from the Router”

3-1

Configuring TCP Services

• “Creating a Telnet Client”

• “Editing Telnet Client Global Parameters”

• “Deleting a Telnet Client from the Router”

To conﬁgure and customize FTP on the router, see the following sections:

• “Creating an FTP Server”

• “Editing FTP Global Parameters”

• “Deleting the FTP Server from the Router”

Note: These instructions assume that you have already conﬁgured IP on the

router. If you did not conﬁgure IP, see Conﬁguring Routers or Conﬁguring Customer Access and Trunks (BNX Software), depending on the type of

installed software.

Conﬁguring and Customizing TCP

Use Site Manager to create TCP, edit TCP parameters, and delete TCP from the router.

Creating TCP

3-2

To create TCP on the router, select Protocols➔Global Protocols➔TCP➔Create TCP from the Conﬁguration Manager window (refer to Figure 3-1).

Figure 3-1. Conﬁguration Manager Window

Editing TCP, Telnet, and FTP Parameters

Editing TCP Global Parameters

To edit TCP global parameters, follow these steps:

1. Select Protocols➔Global Protocols➔TCP➔Global from the

Conﬁguration Manager window.

The Edit TCP Global Parameters window appears (refer to Figure 3-2).

3-3

Configuring TCP Services

Figure 3-2. Edit TCP Global Parameters Window

Edit the parameters in this window, using the guidelines in the next

section.

3. Click on OK to save your changes and exit the window.

If you want to delete TCP, go to “Deleting TCP from the Router.”

TCP Global Parameter Descriptions

Use the following descriptions as a guide when you conﬁgure the parameters in the Edit TCP Global Parameters window (refer to Figure 3-2).

Parameter: Enable/Disable

Default: Enable

Options: Enable

Function: Enables or disables TCP on the router.

Instructions: Select Disable to disconnect from TCP. Also, you can select Disable if

you do not need TCP, but want to access previous TCP statistics.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.3.1.2

3-4

| Disable

Editing TCP, Telnet, and FTP Parameters

Parameter: Min. Retransmission Timeout (msec.)

Default: 250 milliseconds (msec.)

Range: 100 to 15000 msec.

Function: Sets the minimum v alue for the retransmission timeout. When one side of

a TCP connection sends a frame and does not receive an ackno wledgment from the other side of the connection within the timeout period, the sending station retransmits the frame.

Instructions: Specify the v alue you want to use for the minimum timeout period. If you

are transmitting on a high-speed network and you set the Min. Retransmission Timeout value too high, network performance may degrade because TCP must wait for the timeout period to elapse before retransmitting unacknowledged data.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.3.1.5

Parameter: Max. Retransmission Timeout (msec.)

Default: 240000 msec.

Range: 15000 to 240000 msec.

Function: Sets the maximum value for the retransmission timeout. When one side of

a TCP connection sends a frame and does not receive an ackno wledgment from the other side of the connection within the timeout period, the sending station retransmits the frame.

Instructions: Specify the value you w ant to use for the maximum timeout period. If you

are transmitting on a low-speed network and you set the Max. Retransmission Timeout value too low, the network may become congested as TCP retransmits unacknowledged frames that have not yet reached their destination.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.3.1.6

3-5

Configuring TCP Services

Parameter: Max. Window Size (bytes)

Default: 4096 bytes

Range: 512 to 65535 bytes

Function: Sets the maximum transmit-and-receive window size that TCP allows for

each connection.

Instructions: Specify the window size. The larger the window size, the more memory

each TCP connection consumes.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.3.1.18

Deleting TCP from the Router

Caution: The system automatically deletes Telnet and BGP from the router

when you delete TCP.

To delete TCP from the router, follow these steps:

1. Select Protocols➔Global Protocols➔TCP➔Delete TCP from the

Conﬁguration Manager window (refer to Figure 3-1).

Site Manager asks:

2. Click on OK to delete TCP.

Do you REALLY want to delete TCP?

Conﬁguring and Customizing the Telnet Server

You use the Telnet Server to establish inbound Telnet sessions. The following sections describe how to create the Telnet Server using Site Manager, edit Telnet Server parameters, and delete the Telnet Server from the router.

Creating a Telnet Server

To create a Telnet Server on the router for inbound Telnet sessions, follow these steps:

1. Select Protocols➔Global Protocols➔Telnet Server➔Create T elnet Server

from the Conﬁguration Manager window (refer to Figure 3-1).

The Telnet Conﬁguration window appears (refer to Figure 3-3). The three parameters displayed locate and deﬁne the scripts that run automatically at login.

3-6

Editing TCP, Telnet, and FTP Parameters

Figure 3-3. Telnet Conﬁguration Window

Set these parameters, using the guidelines in the next section.

3. Click on OK to save your changes and exit the window.

Telnet Conﬁguration Parameter Descriptions

Use the following descriptions as a guide when setting Telnet Conﬁguration parameters:

Parameter: Manager’s Login Script

Default: automgr.bat

Options: The name of the manager’s login script ﬁle.

Function: At login, executes the manager’s login script ﬁle automatically.

Instructions: If you did not change the name of the manager’s login script ﬁle, accept

the default. Otherwise, enter the new name (must be eight characters or less).

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.21

3-7

Configuring TCP Services

Parameter: User’s Login Script

Default: autouser.bat

Options: The name of the user’s login script ﬁle.

Function: At login, executes the user’s login script ﬁle automatically.

Instructions: If you did not change the name of the user’s login script ﬁle, accept the

default. Otherwise, enter the new name (must be eight characters or less).

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.22

Parameter: Force User Logout

Default: Disable

Options: Enable

Function: Speciﬁes whether the user can press control-c to cancel a user autoscript

at login (when a user autoscript is in effect).

Instructions: Select Enable to prevent using control-c to cancel the user autoscript at

Select Disable to allow the user to press control-c to cancel the user autoscript at login.

Use the default (Disable) if you want users to access the Technician Interface. Set to Enable if you want users to enter the Telnet logout command.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.23

| Disable

Editing Telnet Server Global Parameter s

To edit Telnet Server global parameters, follow these steps:

1. Select Protocols➔Global Protocols➔Telnet Server➔Global from the

Conﬁguration Manager window (refer to Figure 3-1).

The Edit Telnet Server Global Parameters window appears (refer to Figure 3-4).

3-8

Editing TCP, Telnet, and FTP Parameters

Figure 3-4. Edit Telnet Server Global Parameters Window

Edit the parameters in this window, using the guidelines in the next

section.

3. Click on OK to save your changes and exit the window.

Telnet Server Global Parameter Descriptions

Use the following descriptions as a guide when you conﬁgure the parameters in the Edit Telnet Server Global Parameters window.

3-9

Configuring TCP Services

Parameter: Enable/Disable

Default: Enable

Options: Enable

Function: Speciﬁes whether Telnet is enabled for the IP router, allowing you to

establish Telnet sessions to the Technician Interface.

Instructions: Select Enable to enable Telnet for the IP router. Select Disable to disable

Telnet for the IP router.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.2

Parameter: TI Lines per Screen

Default: 24 lines

Range: 1 to 24 lines

Function: Speciﬁes the maximum number of lines displayed on the Telnet

T echnician Interface console screen. The screen may o v erride the number of lines you specify if Telnet can negotiate the window size with the remote client.

Instructions: Set according to your console requirements.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.3

| Disable

Parameter: TI More

Default: Enable

Options: Enable

Function: Speciﬁes whether the Technician Interface pauses after each screen ﬁlls

with data.

Instructions: Select Enable to conﬁgure the Technician Interface to pause after each

screen ﬁlls with data. Select Disable to conﬁgure the Technician Interface not to pause after each screen ﬁlls with data.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.4

3-10

| Disable

Editing TCP, Telnet, and FTP Parameters

Caution: Site Manager disconnects the current session if you modify the TI

Prompt parameter.

Parameter: TI Prompt

Default: None

Range: 1 to 18 alphanumeric characters

Function: Speciﬁes the character string used as the login prompt on the Telnet

Technician Interface console screen.

Instructions: Specify a character string.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.5

Parameter: Login Timeout (min.)

Default: 1 minute

Range: 1 to 99 minutes (99 = inﬁnity)

Function: Speciﬁes the number of minutes that can elapse before the Technician

Interface disconnects the Telnet session if you do not enter a login ID at the login prompt.

Instructions: Accept the default value (1 minute) or specify a different value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.6

Parameter: Password Timeout (min.)

Default: 1 minute

Range: 1 to 99 minutes (99 = inﬁnity)

Function: Speciﬁes the number of minutes that can elapse before the Technician

Interface disconnects the Telnet session if you do not enter a password at the password prompt.

Instructions: Accept the default value (1 minute) or specify a different value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.7

3-11

Configuring TCP Services

Parameter: Command Timeout (min.)

Default: 15 minutes

Range: 1 to 99 minutes (99 = inﬁnity)

Function: Speciﬁes the number of minutes that can elapse before the Technician

Interface disconnects the Telnet session if you do not enter a command at the command prompt.

Instructions: Accept the default value (15 minutes) or specify a different value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.8

Parameter: Login Retries

Default: 3 login attempts

Range: 1 to 99 login attempts

Function: Speciﬁes the maximum number of login attempts you can make before

the Technician Interface disconnects the Telnet session.

Instructions: Accept the default value (3) or specify a different value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.9

Parameter: Diagnostic Report

Default: Disable

Options: Enable

Function: Speciﬁes whether the Technician Interface displays a record of all

processing operations. Used for diagnostic purposes only.

Instructions: Accept the default (Disable). This parameter is for ﬁeld service personnel

only .

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.15

3-12

| Disable

Parameter: Diagnostic Exercise

Default: Disable

Editing TCP, Telnet, and FTP Parameters

Options: Enable

Function: Used for diagnostic purposes only.

Instructions: Accept the default (Disable). This parameter is for ﬁeld service personnel

only .

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.16

Parameter: Diagnostic Network Data

Default: Disable

Options: Enable

Function: Speciﬁes whether the Technician Interface displays Telnet protocol

information. Used for diagnostic purposes only.

Instructions: Accept the default (Disable). This parameter is for ﬁeld service personnel

only .

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.17

Parameter: Diagnostic PTY Data

Default: Disable

| Disable

Options: Enable

Function: Speciﬁes whether the Technician Interface displays pseudo-terminal

driver (PTY) information. Used for diagnostic purposes only.

Instructions: Accept the default (Disable). This parameter is for ﬁeld service personnel

only .

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.18

| Disable

3-13

Configuring TCP Services

Parameter: Diagnostic Options

Default: Disable

Options: Enable

Function: Speciﬁes whether the Technician Interface displays Telnet options

information. Used for diagnostic purposes only.

Instructions: Accept the default (Disable). This parameter is for ﬁeld service personnel

only .

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.19

Parameter: Manager’s Login Script

Default: automgr.bat

Options: The name of the manager’s login script ﬁle.

Function: At login, executes the manager’s login script ﬁle automatically.

Instructions: If you did not change the name of the manager’s login script ﬁle, accept

the default. Otherwise, enter the new name (must be eight characters or less).

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.21

Parameter: User’s Login Script

| Disable

Default: autouser.bat

Options: The name of the user’s login script ﬁle.

Function: At login, executes the user’s login script ﬁle automatically.

Instructions: If you did not change the name of the user’s login script ﬁle, accept the

default. Otherwise, enter the new name (must be eight characters or less).

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.22

3-14

Parameter: Force User Logout

Default: Disable

Editing TCP, Telnet, and FTP Parameters

Options: Enable

Function: Speciﬁes whether the user can press control-c to cancel a user autoscript

at login (when a user autoscript is in effect).

Instructions: Set the parameter to Enable to prevent using control-c to cancel the user

autoscript at login.

Set the parameter to Disable to allow the user to press control-c to cancel the user autoscript at login.

Use the default (Disable) if you want users to access the Technician Interface. Set to Enable if you want users to enter the Telnet logout command.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.23

Parameter: TI History Depth

Default: 20 commands

Range: 1 to 40 commands

Function: Speciﬁes the maximum number of Technician Interface commands stored

in the local command history table. The table stores each command you enter at the Technician Interface prompt, on a First-In, First-Out (FIFO) basis.

| Disable

Instructions: Set the maximum number of commands that you w ant the router to store,

for subsequent recall with the Technician Interface history command.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.1.24

3-15

Configuring TCP Services

Deleting a Telnet Server from the Router

To delete a Telnet Server from the entire router, follow these steps:

1. Select Protocols➔Global Protocols➔Telnet Server➔Delete T elnet Server

in the Conﬁguration Manager window (refer to Figure 3-1).

Site Manager asks:

2. Click on OK to delete the Telnet Server.

Do you REALLY want to delete Telnet Server?

Conﬁguring and Customizing the Telnet Client

You use the Telnet Client to establish outbound Telnet sessions. Use Site Manager to create the Telnet Client, edit Telnet Client parameters, and delete the Telnet Client from the router.

Creating a Telnet Client

To create a Telnet Client on the router for outbound Telnet sessions, select Protocols➔Global Protocols➔Telnet Client➔Create Telnet Client from the Conﬁguration Manager window (refer to Figure 3-1).

Editing T elnet Client Global Parameters

To edit Telnet Client global parameters, follow these steps:

1. Select Protocols➔Global Protocols➔Telnet Client➔Global from the

Conﬁguration Manager window (refer to Figure 3-1).

The Edit Telnet Client Global Parameters window appears (refer to Figure 3-5).

3-16

Editing TCP, Telnet, and FTP Parameters

Figure 3-5. Edit Telnet Client Global Parameters Window

Edit the parameters in this window, using the descriptions in the next

section as a guide.

3. Click on OK to save your changes and exit the window.

Telnet Client Global Parameter Descriptions

Use the descriptions in this section as a guide when you conﬁgure the parameters in the Edit Telnet Client Global Parameters window (refer to Figure 3-5).

Parameter: Enable/Disable

Default: Enable

Options: Enable

Function: Speciﬁes whether the Telnet Client is enabled for the IP router, allowing

you to establish outbound T elnet sessions from the Technician Interface to another router or to a UNIX station that supports Telnet.

Instructions: Select Enable to enable Telnet Client for the IP router or Disable to

disable it.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.2.2

| Disable

3-17

Configuring TCP Services

Parameter: Verbose Debug Logging

Default: OFF

Options: ON

| OFF

Function: Speciﬁes whether the Technician Interface displays the negotiation

process between the T elnet Serv er and Telnet Client. This parameter is for diagnostic use only.

Instructions: Select ON to enable verbose debug logging or OFF to disable it.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.2.3

Parameter: Remote Port

Default: 23

Options: Any valid TCP port number.

Function: Speciﬁes the default remote Telnet Server’s TCP port.

Instructions: Enter the appropriate value for the default remote Telnet Server’s TCP

port.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.2.4

Parameter: Prompt

Default: None

Options: Any text string less than 40 characters long

Function: Speciﬁes the default Telnet Client command prompt.

Instructions: Enter any text string less than 40 characters long; for example, Router1%.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.7.2.5

Deleting a Telnet Client from the Router

To delete a Telnet Client from the entire router, follow these steps:

1. Select Protocols➔Global Protocols➔Telnet Client➔Delete Telnet Client

in the Conﬁguration Manager window (refer to Figure 3-1).

Site Manager asks:

2. Click on OK to delete Telnet Client from the router.

3-18

Do you REALLY want to delete Telnet Client?

Editing TCP, Telnet, and FTP Parameters

Conﬁguring and Customizing the FTP Server

Use Site Manager to create the FTP Server, edit FTP Server parameters, and delete the FTP Server from the router.

Creating an FTP Server

To create an FTP server on the router, select Protocols➔Global Protocols➔FTP➔Create FTP from the Conﬁguration Manager window (refer to Figure 3-1).

Editing FTP Global Parameters

To edit global parameters for the FTP server, follow these steps:

1. Select Protocols➔Global Protocols➔FTP➔Global from the

Conﬁguration Manager window (refer to Figure 3-1).

The Edit FTP Global Parameters window appears (refer to Figure 3-6).

Figure 3-6. Edit FTP Global Parameters Window

3-19

Configuring TCP Services

Edit the parameters in this window, using the descriptions in the next

section as a guide.

3. Click on OK to save your changes and exit the window.

FTP Global Parameter Descriptions

Use the following descriptions as a guide when you conﬁgure the parameters in the Edit FTP Global Parameters window.

Parameter: Enable/Disable

Default: Enable

Options: Enable

Function: Speciﬁes whether the FTP subsystem is enabled or disabled.

Instructions: Specify Disabled if you want to disable FTP on the router.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.2

Parameter: Default Volume

Default: Volume 2

Options: Volume 1 to 13, Volume A

Function: Speciﬁes the number of the ﬁle system volume to which FTP writes

transferred ﬁles and from which FTP retrieves ﬁles for transfer.

Instructions: On systems with a diskette, specify Volume A.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.3

| Disable

3-20

Editing TCP, Telnet, and FTP Parameters

Parameter: Login Retries

Default: 3 retries

Options: 0 to 5 retries

Function: Speciﬁes the number of FTP login retries allowed after a login failure.

Instructions: Enter a value representing the number of login attempts that FTP will

accept after a login failure before rejecting logins.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.4

Parameter: Idle Time Out (secs)

Default: 900 seconds

Options: 1 to 9999 seconds

Function: Speciﬁes the length of time (in seconds) that FTP waits before closing an

idle FTP control connection.

Instructions: Determine the maximum idle time you want to allo w and specify the time

value in seconds.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.5

Parameter: Max. Sessions

Default: 3 sessions

Options: 1 to 10000 sessions

Function: Speciﬁes the maximum number of FTP sessions allowed at one time.

Instructions: Determine the maximum number of simultaneous sessions you want to

allow and specify a value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.6

3-21

Configuring TCP Services

Parameter: Type of Service

Default: Binary

Options: Binary

Function: Speciﬁes the current data transmission type.

Instructions: To transfer ﬁles consisting of ASCII characters, specify ASCII

transmission. For non-ASCII ﬁles, specify Binary.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.7

Parameter: Control Connection

Default: Low Delay

Options: Normal

Function: Speciﬁes the Type of Service value that FTP inserts in IP datagrams on a

control connection.

Instructions: Choose the option that determines how the Internet transport layer

handles datagrams on a control connection.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.8

Parameter: Data Transfer

Default: High Throughput

| ASCII

| Low Delay

Options: Normal

Function: Speciﬁes the Type of Service value that FTP inserts in IP datagrams on a

data transfer connection.

Instructions: Choose the option that determines how the Internet transport layer

handles datagrams on a data transfer connection.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.9

3-22

| High Throughput

Parameter: TCP Window Size

Default: 60000 bytes

Range: 5000 to 64000 bytes

Function: Speciﬁes the size of the windows used for TCP connections.

Instructions: Determine the window size you require and specify the size in bytes.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.10.1.10

Deleting the FTP Server from the Router

To delete the FTP server from the entire router, follow these steps:

1. Select Protocols➔Global Protocols➔FTP➔Delete FTP in the

Conﬁguration Manager window.

Editing TCP, Telnet, and FTP Parameters

Site Manager asks:

2. Click on OK to delete the FTP server from the router.

Do you REALLY want to delete FTP?

3-23

This appendix lists the default settings for Site Manager. Use the Conﬁguration Manager to edit any of the Site Manager default settings listed here.

TCP Parameters

Table A-1 lists the Site Manager default parameter settings for the Transmission Control Protocol (TCP).

Table A-1. TCP Conﬁguration Parameters

Parameter Default

Appendix A

Site Manager Default Settings

Enable/Disable Enable Min. Retransmission Timeout 250 ms Max. Retransmission Timeout 240000 ms Max. Window Size 4096 bytes

A-1

Configuring TCP Services

Telnet Parameters

Tables A-2 and A-3 list the Site Manager default parameter settings for Telnet.

Table A-2. Telnet Server Conﬁguration Parameters

Parameters Default

Enable/Disable Enable TI Lines per Screen 24 lines TI More Enable TI Prompt None Login Timeout 1 minute Passw ord Timeout 1 minute Command Timeout 15 minutes Login Retries 3 login attempts Diagnostic Report Disable Diagnostic Exercise Disable Diagnostic Network Data Disable Diagnostic PTY Data Disable Diagnostic Options Disable Manager’s Login Script User’s Login Script Force User Logout Disable TI History Depth 20 commands

automgr.bat autouser.bat

A-2

Table A-3. Telnet Client Conﬁguration Parameters

Parameters Default

Enable/Disable Enable Verbose Debug Logging OFF Remote Port 23 Prompt None

FTP Parameters

Table A-4 lists the Site Manager default parameter settings for the File Transfer Protocol (FTP).

Table A-4. FTP Conﬁguration Parameters

Parameters Default

Enable/Disable Enable Default V olume V olume 2 Login Retries 3 retries Idle Time Out 900 seconds Max Sessions 3 sessions Type of Service Binary Control Connection Low delay Data T r ansfer High Throughput TCP Window Size 16000 bytes

Site Manager Default Settings

A-3

Index

acknowledgment with retransmission, 1-2

caching, 1-2 checksums, 1-2 clients, 1-2, 1-4 Command Timeout parameter, 3-12 Conﬁguration Manager window, 3-2 connections, 1-2 Control Connection parameter, 3-22

Data Transfer parameter, 3-22 Default Volume parameter, 3-20 Diagnostic Exercise parameter, 3-13 Diagnostic Network Data parameter, 3-13 Diagnostic Options parameter, 3-14 Diagnostic PTY Data parameter, 3-13 Diagnostic Report parameter, 3-12

File Transfer Protocol (FTP), 1-5 ﬂow control, 1-2, 1-4 Force User Logout parameter, 3-8, 3-15 FTP global parameters

Control Connection, 3-22 Data Transfer, 3-22 Default Volume, 3-20 Enable/Disable, 3-20 Idle Time Out, 3-21 Login Retries, 3-21 Max. Sessions, 3-21 TCP Window Size, 3-23 Type of Service, 3-22

Idle Time Out parameter, 3-21 Inbound Telnet, 1-5, 3-6. See also Telnet server Internet Protocol (IP), 1-1

Edit TCP Global Parameters window, 3-4 Edit Telnet Server Global Parameters window,

3-9 Enable/Disable, 3-17 Enable/Disable parameter, 3-4, 3-10, 3-20

Manager’s Login Script parameter, 3-7, 3-14 Max. Retransmission Timeout parameter, 3-5

Index-1

Max. Sessions parameter, 3-21 Max. Window Size parameter, 3-6 memory

and number of Telnet connections, 1-5 considerations for conﬁguring TCP, 2-1

Min. Retransmission Timeout parameter, 3-5

outbound Telnet, 1-5, 3-16. See also Telnet client out-of-order caching, 1-2

Parameters. See individual names Password Timeout parameter, 3-11 ports, 1-3 Prompt parameter, 3-18

reference material, 1-8 Remote Port parameter, 3-18

sequence numbers, 1-1 Simple Network Management Protocol (SNMP),

1-5 sockets, 1-3

TCP

clients, 1-2, 1-4 connection states, 1-3 to 1-4 connections for, 1-2 creating, 3-2 deleting from the router, 3-6

editing parameters for, 3-3 memory considerations, 2-1 overview of, 1-1 to 1-4 ports, 1-3

TCP global parameters, 3-4 to 3-6

descriptions of, 3-4 to 3-6 editing, 3-3 Enable/Disable, 3-4 Max. Retransmission Timeout, 3-5 Max. Window Size, 2-1, 3-6

Min. Retransmission Timeout, 3-5 TCP Window Size parameter, 3-23 Technician Interface, 1-5 Telnet, 1-4 to 1-5 Telnet client, 1-4

command prompt, 3-18

creating, 3-16

deleting from the router, 3-18

editing parameters for, 3-16 to 3-17

parameter descriptions for, 3-17 to 3-18 Telnet client global parameters, 3-17 to 3-18

editing, 3-16 to 3-17

Enable/Disable, 3-17

Prompt, 3-18

Remote Port, 3-18

Verbose Debug Logging, 3-18 Telnet conﬁguration parameters, 3-7 to 3-8

Force User Logout, 3-8

Manager’s Login Script, 3-7

User’s Login Script, 3-8 Telnet server, 3-6 to 3-16

creating, 3-6

deleting from the router, 3-16

editing parameters for, 3-8 to 3-9 Telnet server global parameters

Command Timeout, 3-12

Diagnostic Exercise, 3-13

Diagnostic Network Data, 3-13

Diagnostic Options, 3-14

Diagnostic PTY Data, 3-13

Diagnostic Report, 3-12

Force User Logout, 3-15

Index-2

Login Retries, 3-12 Login Timeout, 3-11 Manager’s Login Script, 3-14 Password Timeout, 3-11 TI History Depth, 3-15 TI Lines per Screen, 3-10 TI More, 3-10 TI Prompt, 3-11 User’s Login Script, 3-14

Telnet server parameters

editing, 3-8 to 3-9

Enable/Disable, 3-10 TI History Depth parameter, 3-15 TI Lines per Screen parameter, 3-10 TI More parameter, 3-10 TI Prompt parameter, 3-11 Transmission Control Protocol. See TCP Type of Service parameter, 3-22

User’s Login Script parameter, 3-8, 3-14

Verbose Debug Logging parameter, 3-18

window size for TCP, 2-1, 3-23

Index-3

Avaya TCP User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Software Suites

Audience

Before Y ou Begin

Bay Networks Customer Support

CompuServe

InfoFACTS

W orld Wide Web

How to Get Help

Conventions

Ordering Bay Networks Publications

Acronyms

Reliability

Connection T ypes

Connections and Connection States

TCP and IP Service Users

Telnet

File T ransfer Protocol

For More Information about TCP

Memory Considerations

Creating TCP

Editing TCP Global Parameters

TCP Global Parameter Descriptions

Deleting TCP from the Router

Creating a Telnet Server

Editing Telnet Server Global Parameter s

Telnet Server Global Parameter Descriptions

Deleting a Telnet Server from the Router

Creating a Telnet Client

Editing T elnet Client Global Parameters

Telnet Client Global Parameter Descriptions

Deleting a Telnet Client from the Router

Creating an FTP Server

Editing FTP Global Parameters

FTP Global Parameter Descriptions

Deleting the FTP Server from the Router

TCP Parameters

Telnet Parameters

FTP Parameters