R0106-HP MSR Router Series Interface Command Reference(V7)

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Parameters
interface-number: Specifies a loopback interface by its number, which can be the number of any existing
loopback interface. If you do not specify this argument, the command displays information about all
existing loopback interfaces on the device.
brief: Displays brief interface information. If you do not specify this keyword, the command displays
detailed interface information.
description: Displays complete interface descriptions. If you do not specify this keyword, the command
displays only the first 27 characters of interface descriptions.
down: Displays information about interfaces in down state and the causes. If you do not specify this
keyword, the command displays information about interfaces in all states.
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 state: UP(spoofing)
Description: LoopBack0 Interface
Bandwidth: 0kbps
Maximum Transmit Unit: 1536
Internet protocol processing: disabled
Physical: Loopback
Last clearing of counters: Never
Last 300 seconds input: 0 bytes/sec, 0 bits/sec, 0 packets/sec
Last 300 seconds output: 0 bytes/sec, 0 bits/sec, 0 packets/sec
Input: 0 packets, 0 bytes, 0 drops
Output: 0 packets, 0 bytes, 0 drops
Table 36 Command output
Field Descri
p
tion
Current state
Physical layer state of the interface:
• UP—The loopback interface can receive and transmit packets.
• Administratively DOWN—The interface was manually shut down
by using the shutdown command.
Line protocol state
Data link layer protocol state of the interface. UP (spoofing) means that
the data link layer protocol state of the interface up, but the link is an
on-demand link or is not present.
Description Description string of the interface.
Bandwidth Expected bandwidth of the interface.