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Field
# Display brief information about all loopback interfaces.
<Sysname> display interface loopback brief
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface
Loop1
# Display brief information about all existing loopback interfaces, including the complete description
of each loopback interface.
<Sysname> display interface loopback brief description
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface
Loop1
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# Display information about all loopback interfaces in down state and the causes.
<Sysname> display interface loopback brief down
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Interface
Loop1
Table 12 Command output
Field
Brief information on interfaces in
route mode
Link: ADM - administratively down;
Stby - standby
Protocol: (s) - spoofing
Interface
Link
Description
and the number of dropped packets.
Link Protocol Primary IP
UP
UP(s)
--
Link Protocol Primary IP
UP
UP(s)
--
Link Cause
ADM
Administratively
Description
Brief information about loopback interfaces.
Explains the Link field values:
•
ADM—The interface has been shut down by the network
administrator. To recover its physical layer state, run the undo
shutdown command.
•
Stby—The interface is a standby interface.
Explains the Protocol field value.
(s)—Represents spoofing. If the data link layer protocol of an interface
is up, but the link is an on-demand link or is not present, the Protocol
field displays UP(s). This attribute is typical of interface Null 0,
Inloopback 0, and loopback interfaces.
Interface name.
Physical layer state of the interface:
•
UP—The interface is up.
•
DOWN—The interface is physically down.
•
ADM—The interface has been administratively shut down. To
recover its physical state, run the undo shutdown command.
•
Stby—The interface is a standby interface.
46
Description
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Description
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