Squelch; Cli Commands - Bay Networks 5390 Administering

Communications server

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The Command Line Interpreter (CLI) is the command interface for executing Model 5390

commands. You enter commands at the CLI when connecting to hosts, managing jobs (or sessions),

displaying and modifying port parameters, and displaying Model 5390 and network information.

The CLI provides two groups of commands—user and superuser commands; the superuser

commands are used for Model 5390 administration.

Command Syntax

You can shorten any CLI command or host name to the minimum number of letters that make the

name unique. This is called minimum uniqueness. If you do not want the Model 5390 server to

interpret a host name using minimum uniqueness, enclose the name in double quotes (""). For

example, entering hosts "new" prevents ambiguities between hosts newark and new. You can enter

commands and host names in lowercase, uppercase, or a combination of the two. The Model 5390

server performs any necessary case conversion.

Squelch

If six consecutive CLI errors occur within six seconds (for example, an invalid command, noise on

the line, etc.), the Model 5390 server triggers a squelch, that is, stops all I/O for approximately four

seconds after receiving the sixth error. Pressing Return after this period of time returns you to the

If four consecutive squelches occur without an intervening known command or if serial errors

(framing/parity) occur while the line is squelched, the Model 5390 server shuts down the line for

20 seconds and syslogs: excessive errors on port n; shutting down (where n is the port number.)

Table C3-1 lists both the user and superuser CLI commands.

Using the CLI Commands

NOTE: If the errors occur over a time period greater than six seconds,

the Model 5390 server ignores them and restarts the timer.