3com MSR 20-20 참조 매뉴얼

C

HAPTER

 44: L

OGICAL

 I

NTERFACE

 C

ONFIGURATION

 C

OMMANDS

number: Loopback interface number, which can be the number of any existing 
Loopback interface.

Use the display interface loopback command to view the relevant information 
about the existing Loopback interfaces. If you do not provide a Loopback interface 
number, this command will display the relevant information about all the existing 
Loopback interfaces.

interface loopback.

# View the status of Loopback 12.

<Sysname> display interface loopback 12

LoopBack12 current state: UP

Line protocol current state: UP (spoofing)

Description: LoopBack12 Interface

The Maximum Transmit Unit is 1536

Internet protocol processing : disabled

Physical is Loopback

Last 300 seconds input:

0 bytes/sec 0 packets/sec

Last 300 seconds output:

0 bytes/sec 0 packets/sec

0 packets input, 0 bytes, 0 drops

0 packets output, 0 bytes, 0 drops 

display interface mfr [ mfr-number ]

Any view

mfr-number: Multilink frame relay (MFR) interface number, which can be the 
number of any existing MFR interface.

Table 117   Description on the fields of the display interface loopback command

current state 

Physical state of the interface: UP/DOWN 

Line protocol current state 

State of the link layer protocol: UP/DOWN 

Description Description 

string of the interface 

The Maximum Transmit Unit 

Maximum transmit unit (MTU) of the interface 

Internet protocol processing 

Processing state of the network layer protocol: 
enabled/disabled 

Physical Physical 

type of the interface 

Last 300 seconds input: 0 bytes/sec 0 
packets/sec

Last 300 seconds output: 0 bytes/sec 
0 packets/sec

0 packets input, 0 bytes, 0 drops

0 packets output, 0 bytes, 0 drops 

Statistics on packets sent/received over the physical 
layer