Juniper Networks J-Series manual Monitoring Interfaces and Traffic from the CLI, Key Action

Chapter 12: Using Services Router Diagnostic Tools

Monitoring Interfaces and Traffic from the CLI

This section contains the following topics:

■Using the monitor interface Command on page 245

■Using the monitor traffic Command on page 246

Using the monitor interface Command

Use the CLI monitor interface command to display real-time traffic, error, alarm, and filter statistics about a physical or logical interface. Enter the command with the following syntax:

user@host> monitor interface (interface-nametraffic)

Replace interface-namewith the name of a physical or logical interface. If you specify the traffic option, statistics for all active interfaces are displayed.

The real-time statistics are updated every second. The Current delta and Delta columns display the amount the statistics counters have changed since the monitor interface command was entered or since you cleared the delta counters. Table 127 on page 245 and Table 128 on page 245 list the keys you use to control the display using the interface-nameand traffic options. (The keys are not case sensitive.)

Table 127: CLI monitor interface Output Control Keys

Key	Action
c	Clears (returns to 0) the delta counters in the Current delta column. The
	statistics counters are not cleared.
f	Freezes the display, halting the update of the statistics and delta counters.
i	Displays information about a different interface. You are prompted for the
	name of a specific interface.
n	Displays information about the next interface. The Services Router scrolls
	through the physical and logical interfaces in the same order in which they
	are displayed by the show interfaces terse command.
q or ESC	Quits the command and returns to the command prompt.
t	Thaws the display, resuming the update of the statistics and delta counters.

Table 128: CLI monitor interface traffic Output Control Keys

Key	Action
b	Displays the statistics in units of bytes and bytes per second (bps).
c	Clears (returns to 0) the delta counters in the Delta column. The statistics
	counters are not cleared.

Using CLI Diagnostic Commands ■ 245