Chapter 11
| Interface Commands
Interface Configuration
– 358 –
Command Mode
Privileged Exec
Command Usage
Statistics are only initialized for a power reset. This command sets the base value for
displayed statistics to zero for the current management session. However, if you log
out and back into the management interface, the statistics displayed will show the
absolute value accumulated since the last power reset.
Example
The following example clears statistics on port 5.
Console#clear counters ethernet 1/5
Console#
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).
◆
The Type field will always display “NA” for a trunk entry because a trunk allows
for mixed port types such as 1000BASE-T and 1000BASE SFP.
Example
Console#show interfaces brief
Interface Name Status PVID Pri Speed/Duplex Type Trunk
--------- ----------------- --------- ---- --- ------------- ------------ -----
Eth 1/ 1 Down 1 0 Auto 1000BASE-T None
Eth 1/ 2 Down 1 0 Auto 1000BASE-T None
Eth 1/ 3 Down 1 0 Auto 1000BASE-T None
Eth 1/ 4 Down 1 0 Auto 1000BASE-T None
Eth 1/ 5 Down 1 0 Auto 1000BASE-T None
Eth 1/ 6 Down 1 0 Auto 1000BASE-T None
.
.
.
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