Digi TS8, 16 manual Verifying Tftp on a Unix System, Troubleshooting Tftp Problems

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Verifying TFTP on a UNIX System

Use this procedure to verify that TFTP is working correctly on your UNIX host.

Note: This procedure, which uses a TFTP transfer of the Digi Device's boot image between two UNIX hosts, enables you to compare the size of the boot image before and after it is transferred, enabling you to determine if TFTP is working properly.

Procedure

1.Access a root prompt on the UNIX host.

2.Make sure that you are not in the /tftpboot directory.

3.Enter this command: tftp ipaddress

where ipaddress is the IP address of the UNIX host. A TFTP prompt appears.

4.At the prompt, enter the following command: binary

5.Enter this command at the TFTP prompt: tftp > get tftp_file_name

where tftp_file_name is the name of the Digi Device's boot image in the /tftpboot direc- tory.

6.Enter this command at the TFTP prompt to exit TFTP: tftp quit

7.Compare the size of the original file against the transferred file using this command:

ls -l tftp_file_name /tftpboot/tftp_file_name

If the file sizes match, TFTP is working properly.

Troubleshooting TFTP Problems

Here are some things to check if you encounter TFTP problems.

Verify that the /tftpboot directory exists and has read, write and execute (777) permissions with this command:

ls -l /tftpboot

If necessary, use this command to create the directory: mkdir /tftpboot

If necessary, use this command to change permissions of the directory to read, write and execute: chmod 777 /tftpboot

Verify that the file /tftpboot/ftp_file_name exists and has read and execute permissions with this command:

ls -l /tftpboot/ftp_file_name

where ftp_file_name is the name of the firmware boot image specified by the Digi Device. If necessary, use this command to change permissions of the file to read and execute:

chmod 666 /tftpboot/ftp_file_name

Verify that the inetd.conf file is properly configured for tftp by displaying the file /etc/inetd.conf. An entry similar to this should be uncommented:

tftp dgram udp something

where something will vary with each operating system.

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Verifying TFTP on a UNIX System

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Contents PortServer TS 8/16 Configuration and Administration Guide Page Contents Chapter Configuring Users Page Introduction This ChapterSetup Overview About Entering Commands on the Command Line About This GuideSupported Devices Access Resource CD Card Other Documents in the LibraryAbout Configuration Methods Configuring the PortServer TS 8/16 from a Telnet SessionConfiguring the PortServer TS 8/16 from the Web Interface Downloading a Configuration FileConfiguration Prerequisites Logging On As Root from the Command LineAccessing the Command Line from a Telnet Session Accessing the Configuration from the Web InterfaceConfiguring the IP Address Options for Configuring the IP Address and Mask OptionsConfiguring the Ethernet Interface with DPA-Remote ProcedureStarting Point Configuring the IP Address Using Ping-ARP Configuring the Ethernet Interface from the Command Line Configuring an IP Address using Dhcp and RarpManual Configuration Procedure Manual Configuration ExampleConfiguring an IP Address using Dhcp and Rarp Configuring Ports for RealPort What is RealPort? Configuring the RealPort SoftwareConfiguration Options About RealPortConfiguring Ports Web Interface Configuring Ports for RealPort Command Line ExampleConfiguring Ports for Printers Configuration Considerations Configuring Ports for Printers Web Interface Configuring Printer Connections Command LineTips for telnet and rsh Printing Related InformationConfiguring Printer Connections Command Line Configuring a Port for Direct-Access Printing Configuring a Port for Direct-Access Printing Configuring Ports for Terminals Configuring Ports for Terminals Web Interface Configuring Ports for Terminals Command LinePort Defaults Configuring Typical PC Connections About Computer ConnectionsAbout Computer Connections Configuring Ports for Modems Tips on Configuring a Modem Configuring Ports for Modems Web Interface Before You Begin Configuring PPP Configuring PPP Connections Web Interface Configuring Inbound PPP Connections Command Line Configuring Inbound PPP Connections Example Configuring Outbound PPP Connections Command Line Set user name=name n1=telephone-number Configuring IP Routing What is Routing Introduction to RoutingTypes of Routing About RIP Routing Updates PortServer TS 8/16 Participation in RIP Updates Configuring Static Routes Example Route Using the Ethernet InterfaceExample Route Using a PPP Link Configuring Dynamic Routes Using RIP Example Dynamic RoutesConfiguring Proxy ARP Configuring Proxy ARP Configuring Autoconnection Configuring a Port for Autoconnection Web Interface Configuring Autoconnection By Port Command LineAbout Autoconnection Configuring a User for Autoconnection Web Interface Configuring a User for Autoconnection Command LineConfiguring a User for Autoconnection Command Line Configuring Console Management Configuring Console Management Web Interface Configuring Console Management Command LineAbout Console Management Example SSH2 and Menu Access Example Alternate IP Addresses10-4 Configuring Security Features Controlling Access to the PortServer TS 8/16 Configuration Controlling Access to Inbound PortsControlling Access to Outbound Ports Controlling Access to the PortServer TS 8/16 Command LineUsing Radius to Authenticate Users What is RADIUS?Radius Components Radius Table KeyConfiguring Radius Web Interface Radius Accounting Attributes RFCHow Radius Works Configuring Radius Command Line Radius Command Line Configuration ExampleIssuing User Passwords Configuring SSH Version 2 for Secure Communication Password ProtectionUsing a Public Key Configuring DNS About the Domain Name System Configuration Procedures Procedure for Using a Name ServerProcedure for Using a Host File 13-4 Configuring Snmp About Snmp and the PortServer TS 8/16 Agent Configuration Procedure Web Interface Configuration Procedure Command LineConfiguration Example 14-4 Managing the OS and Configuration Upgrading the OS Firmware Web Interface Upgrading the OS Firmware Command Line Prerequisite TaskConfiguring PortServer TS 8/16 from a Remote Host When To Use Remote ConfigurationRules for Editing a Configuration file Copying the Configuration File to a HostCpconf fromhost=199.250.121.12cnfg-fle Resetting the Configuration to Defaults RadiusConfiguring Users About Configuring Users Common User FeaturesConfiguration Methods Configuring a User Web Interface Configuring a User Command Line Examples Configuration Examples Terminal Server Configuration Without RealPort ConfigurationConfiguration Notes IllustrationTerminal Server Configuration Using Autoconnection Terminal Server Configuration Using RealPort Dial-In PPP Connection Using Radius Dial-In PPP Connection Using Radius PortServer TS 8/16 Troubleshooting Symptom PortServer TS 8/16 Does Not Boot IntroductionSymptom Cannot Telnet to the PortServer TS 8/16 AssumptionsSymptom Trouble Accessing a Port Running PortServer TS 8/16 Hardware DiagnosticsProcedure Running the Post Using the LEDs Procedure Running the Post from a TerminalRunning PortServer TS 8/16 Post Troubleshooting Tftp Problems Verifying Tftp on a Unix SystemResetting PortServer TS 8/16 Configuration to Defaults Command Line ProcedureFront Panel Procedure Verifying the PortServer TS 8/16 IP Address 17-9 Checking for Duplicate IP Addresses Pinging an IP Address Verifying the Network Cabling Verifying the RealPort Process AIX Verifying the RealPort ProcessHP-UX Verifying the RealPort Process Linux Verifying the RealPort ProcessWindows NT Verifying the RealPort Service Windows 2000 Verifying the RealPort ServiceSolaris Verifying the RealPort Process Checking and Changing Port Configuration RealPortDigi Contact Information Digi International Bren Road East Minnetonka, MN

16, TS8 specifications

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