R2511-HP MSR Router Series Interface Command Reference(V5)

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Field Description
Link
Physical link state of the interface:
• UP—The link is up.
• ADM—The link has been administratively shut down. To
recover its physical state, use the undo shutdown
command.
Protocol
Protocol connection state of the interface, which can be UP,
DOWN, or UP(s).
Main IP Main IP address of the interface.
Description Description of the interface.
Cause
Cause of a DOWN physical link. If the port has been shut
down with the shutdown command, this field displays
Administratively. To restore the physical state of the interface,
use the undo shutdown command.
display interface serial
Use display interface serial to display information about serial interfaces.
Syntax
display interface [ serial ] [ brief [ down | description ] ] [ | { begin | exclude | include }
regular-expression ]
display interface serial interface-number [ brief [ description ] ] [ | { begin | exclude | include }
regular-expression ]
Views
Any view
Default command level
1: Monitor level
Parameters
interface-number: Displays information about a specified serial interface.
brief: Displays brief interface information. If you do not specify this keyword, the command displays
detailed interface information.
down: Displays information about interfaces in the DOWN state and the causes. If you do not specify
this keyword, this command displays information about interfaces in all states.
description: Displays complete interface descriptions. If you do not specify this keyword, the command
displays only the first 27 characters of interface descriptions.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.