Reference Guide

Usage
Information
When you configure keepalive, the system sends a self-addressed packet out of the
configured interface to verify that the far end of a WAN link is up. When you configure no
keepalive
, the system does not send keepalive packets and so the local end of a WAN link
remains up even if the remote end is down.
monitor interface
Monitor counters on a single interface or all interfaces on a line card. The screen is refreshed every five seconds and
the CLI prompt disappears.
S4820T
Syntax
monitor interface [interface]
To disable monitoring and return to the CLI prompt, press the q key.
Parameters
interface (OPTIONAL) Enter the following keywords and slot/port or number
information:
• For the management port, enter the keyword
managementethernet then the slot (0 or 1) and the port
(0).
• For a Tunnel interface, enter the keyword tunnel then the
slot/port. The range is from 1 to 16383.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword
fortyGigE then the slot/port information.
• For a VLAN interface, enter the keyword vlan then the slot/
port. The range is from 1 to 4094.
Command Modes
• EXEC
• EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.5.1.0 Added support for 4-port 40G line cards on ExaScale.
Version 8.3.7.0 Introduced on the S4810.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
584