H3C S7500E Series Command Reference Manual page 162

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: 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
0 packets input, 0 bytes, 0 drops
0 packets output, 0 bytes, 0 drops
# Display brief information about interface loopback0.
<Sysname> display interface loopback 0 brief
The brief information of interface(s) under route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface
Loop0 UP
# Display information about loopback interface in DOWN state and the relevant causes.
<Sysname> display interface loopback brief down
The brief information of interface(s) under route mode:
Link: ADM - administratively down; Stby - standby
Interface
Loop1 ADM Administratively
Table 6-1 display interface loopback command output description
Field
current state
Line protocol current state
Description
The Maximum Transmit Unit
Internet protocol processing
Physical is loopback
Link Protocol Main IP
UP(s) --
Link Cause
Physical state of the interface (up or administratively down)
State of the data link layer protocol: up (spoofing). Spoofing
refers to the spoofing attribute of the interface. That is, when the
network layer protocol state of the interface is displayed as up,
the corresponding link may not exist, or the corresponding link is
non-permanent and established on demand.
Description string of the interface
Maximum transmit unit (MTU) of the interface
State of the network layer protocol, which can be disabled or
enabled (displayed as Internet Address is X.X.X.X/XX
Primary)
The physical type of the interface is loopback
Description
Description
6-3