Virtual Teletype

What Does Virtual Teletype Mean?

Virtual teletype (VTY) is a command line interface (CLI) created in a router and used to facilitate a connection to the daemon via Telnet, a network protocol used in local area networks. To connect to a VTY, users must present a valid password.

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Techopedia Explains Virtual Teletype

The VTY interface has three restricted mode commands:

  • VTY View: Enables read-only interface access
  • VTY Enable: Enables read-write access to the CLI
  • VTY Other: Includes modes like Trivial File Transfer Protocol (TFTP)

VTY uses a set of CLI command actions, which depend on the three types of actions CLI can perform:

  • Movement
  • Editing
  • Advanced
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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…