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Avocent CCM1640, CCM840 Connecting to devices using Telnet, To connect to a device using Telnet:

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Chapter 3: Operations	19

Connecting to devices using Telnet

Each CCM serial port is directly addressable via a unique TCP port number that provides a connection to the attached serial device.

Plain text (non-encrypted) Telnet connections are enabled by default. For information about enabling both plain text Telnet and SSH connections, see Enabling plain text Telnet and SSH connections in this chapter.

To connect to a device using Telnet:

Type telnet, followed by the CCM IP address and the appropriate TCP port number, which by default is 3000 plus the physical port number, in decimal format. (The TCP port number may be changed for any CCM port.)

For example, the following Telnet command connects to the serial device attached to physical port 14 of a CCM1640.

telnet 192.168.0.5 3014

If an authentication method other than None has been configured for the CCM, you will be prompted for credentials (username and password). Once authentication completes, your connection is confirmed. When you successfully connect to the serial device, you will see a display similar to the following.

Username: Myname

Password: ******

Authentication Complete

Connected to Port: 14 9600,8,N,1,XON/XOFF

If the authentication method is configured as None, you may Telnet and connect to a serial device without entering credentials; however, credentials are always required when connecting to the CCM CLI.

Data entered at the Telnet client is written to the attached serial device. Any data received by the CCM from the serial device is output to your Telnet client.

You may access the CCM and its ports using Equinox-provided or third-party Telnet client applications. A cross-platform Telnet client is bundled with the AVWorks application. Third-party Telnet client applications may be used in combination with AVWorks or standalone.

You may connect using either SSH (AVWorks provides built-in support for SSH2) or plain text.

AVWorks Telnet

AVWorks is a cross-platform client application provided with each CCM. AVWorks provides a convenient way to select a CCM or attached device and launch a Telnet session to manage it.

Contents

Page Page Page Page Table of Contents Page 1 Product Overview Page Chapter 1: Product Overview Features and Benefits Safety Precautions Rack mount safety considerations Using AVWorks Page Installation and Configuration Page Chapter 2: Installation and Configuration Hardware Overview Installing the CCM Configuring the CCM Configuring the IP address and subnet mask To conﬁgure the IP address and subnet mask using a Telnet CLI: To conﬁgure the CCM using the serial CLI: Initial CCM login Reinitializing the CCM 3 Operations Page Chapter 3: Operations Overview Configuring Serial Port Settings Connecting to Serial Devices Connecting to devices using Telnet Connecting to devices from the serial CLI port Configuring and using dial-inconnections Connecting to devices using PPP Connecting to devices using SSH SSH Authentication Methods Page Enabling plain text Telnet and SSH connections Telnet CLI mode Ending device sessions Session time-outs Managing User Accounts To change a user’s conﬁguration information: To end another user’s CCM session: To delete a user: To display user conﬁguration information: Access rights and levels Using Authentication Modes Authentication summary Using Security Lock-out Managing the Port History Buffer Using port history mode commands Port History Mode Commands To access port history mode: To control the port history buffer display when you connect: To control the port history buffer content when you end a session: To clear and discard all data in a port history buffer: Managing the CCM Using SNMP To add or delete SNMP management entity addresses: To enable or disable SNMP traps: To add or delete SNMP trap destination addresses: To add, copy or delete port alert strings: To display SNMP conﬁguration information: To display port alert string information: 4 Using CCM Commands Page Chapter 4: Using CCM Commands Accessing the CLI Entering Commands When commands take effect Understanding Conventions Command syntax Page Syntax conventions Command Summary CCM Command Summary (Continued) Page Page Page 5 CCM Commands Page Chapter 5: CCM Commands Connect Command Disconnect Command Help Command Port Commands Port Alert Add command Port Alert Copy command Port Alert Delete command Port Break command Port History command Port Logout command Port Set command Page Quit Command Resume Command Server Commands Server CLI command Server FLASH command Server PPP command Server RADIUS command Server Reboot command Server Security command Server Set command Server SNMP command Server SNMP Community command Server SNMP Manager command Server SNMP Trap command Server SNMP Trap Destination command Server SSH command Show Commands Show Port command Page Show Port Alert command Show Server command Show Server CLI command Show Server PPP command Show Server RADIUS command Show Server Security command Show Server SNMP command Show User command SPC Command User Commands User Add command Page User Delete command User Logout command User Set command User Unlock command Page Appendices Page Appendices Appendix A: Technical Specifications Appendix B: Device Cabling Page RJ-45modular adaptors and cables Page Appendix C: Ports Used Appendix D: Technical Support