CLI Reference Guide

Chapter 11 | Interface Commands
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show interfaces brief This command displays a summary of key information, including operational
status, native VLAN ID, default priority, speed/duplex mode, and port type for all
ports.
Command Mode
Privileged Exec
Command Usage
◆ If an SFP transceiver is inserted in a port, the Type field will show the SFP type
as interpreted from Ethernet Compliance Codes (Data Byte 6 in Address A0h).
The Ethernet Compliance Code is a bitmap value, of which one bit is
supposedly turned on. However, if the read-out is not recognizable (e.g., 2 or
more bits on, or all 0s), the Type field just displays the raw data (hexadecimal
value).
◆ If link status is down due to an administrative setting or the result of a protocol
state, the reason will be listed in the Status field (i.e., Disabled, STP LBD,
BpduGuard, LinkDet, DynQoS, PortSec, LBD, ATC Bcast, ATC Mcast, UDLD,
License).
Example
Console#show interfaces brief
Interface Name Status PVID Pri Speed/Duplex Type Trunk
--------- ----------------- --------- ---- --- ------------- ------------ -----
Eth 1/ 1 Down 1 0 1000full 1000BASE SFP+ None
Eth 1/ 2 Down 1 0 1000full 1000BASE SFP+ None
Eth 1/ 3 Down 1 0 1000full 1000BASE SFP+ None
Eth 1/ 4 Down 1 0 1000full 1000BASE SFP+ None
Eth 1/ 5 Down 1 0 1000full 1000BASE SFP+ None
Eth 1/ 6 Down 1 0 1000full 1000BASE SFP+ None
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show interfaces
counters
This command displays interface statistics.
Syntax
show interfaces counters [interface]
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-54)