49 
Field Description 
second. 
•  bits/sec indicates the average number of bits received per 
second. 
Last 300 seconds output:  0 bytes/sec, 0 
bits/sec, 0 packets/sec 
Average output rate over the last 300 seconds, where: 
•  packets/sec indicates the average number of packets sent per 
second. 
•  bytes/sec indicates the average number of bytes sent per 
second. 
•  bits/sec indicates the average number of bits sent per second.
0 packets input, 0 bytes, 0 drops 
Total number and size (in bytes) of the input packets of the 
interface and the number of the dropped packets 
0 packets output, 0 bytes, 0 drops 
Total number and size (in bytes) of the output packets of the 
interface and the number of the dropped packets 
The brief information of interface(s) under 
route mode 
Brief information about Layer 3 interfaces 
Link: ADM - administratively down; Stby - 
standby 
Link status: 
•  ADM – The interface has been administratively shut down. To 
recover its physical state, perform the undo shutdown 
command.  
•  Stby – The interface is operating as a backup interface.  
Protocol: (s) - spoofing 
If the network 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 (an s in parentheses).  
Interface  Abbreviated interface name 
Link 
Physical link state of the interface, which can be: 
•  UP – The link is up. 
•  ADM – The link has been administratively shut down. To 
recover its physical state, perform the undo shutdown 
command.  
Protocol 
Protocol connection state of the interface, which can be UP, 
DOWN, or UP(s).  
Main IP  The main IP address of the interface 
Description  Description of the interface 
Cause 
The cause of a DOWN physical link. If the port has been shut 
down with the shutdown command, this field displays 
Administratively. To restore the physical state of the interface, 
use the undo shutdown command. 
 
  NOTE: 
Because the S5120-EIseries Ethernet switches do not count the avera
e input/output rate or input/outpu
packets of a loopback interface, these fields are displayed as “0” in the display interface loopback 
command output.