H3C S12500 Series Manual page 42

Usage guidelines
This command is supported only after a loopback interface is created.
If the loopback keyword is not specified, the command displays information about all interfaces of the
device.
If the loopback keyword is specified but the interface-number argument is not specified, the command
displays information about all existing loopback interfaces.
Examples
# Display detailed information about interface loopback 0.
<Sysname> display interface loopback 0
LoopBack0 current state: UP
Line protocol current state: UP (spoofing)
Description: LoopBack0 Interface
The Maximum Transmit Unit is 1536
Internet protocol processing : disabled
Physical is Loopback
Last clearing of counters:
Last 300 seconds input:
Last 300 seconds output:
0 packets input, 0 bytes, 0 drops
0 packets output, 0 bytes, 0 drops
Table 7 Command output
Field
current state
Line protocol current state
Description
The Maximum Transmit Unit
Internet protocol processing: disabled
Internet Address is 1.1.1.1/32
Primary
Physical is Loopback
Last clearing of counters
Never
0 bytes/sec, 0 bits/sec, 0 packets/sec
0 bytes/sec, 0 bits/sec, 0 packets/sec
Description
State of the loopback interface:
•
UP—The loopback interface can receive and transmit packets.
•
Administratively DOWN—The interface was manually shut down
by using the shutdown command.
State of the data link layer protocol. If the link layer protocol state of
an interface is shown as UP but its link is an on-demand link or not
present at all, its protocol attribute includes the spoofing flag.
Description string of the interface.
MTU of the interface.
Indicates that the interface cannot process Layer 3 packets (displayed
when the interface is not configured with an IP address).
Primary IP address of the interface (displayed when the interface is
configured with a primary IP address).
The physical type of the interface is loopback.
Time when statistics on the logical interface were last cleared by using
the reset counters interface command.
If the statistics of the interface have never been cleared by using the
reset counters interface command since the device started, this field
displays Never.
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