Layer 2 Technologies – Ethernet Configuration

interface

To enter Interface configuration mode in order to configure an interface, use the interface Global Configuration mode command.

Syntax

interface interface-id

Parameters

interface-id—Specifies an interface ID. The interface ID can be one of the following types: Ethernet port, port-channel, VLAN, range,  OOB,   IP interface or tunnel.

Default Configuration

None

Command Mode

Global Configuration mode

Examples

Example 1—For Ethernet ports:

switchxxxxxx(config)# interface te1/0/1 
switchxxxxxx(config-if)#

Example 2—For port channels (LAGs):

switchxxxxxx(config)# interface po1
switchxxxxxx(config-if)#

interface range

To execute a command on multiple ports at the same time, use the interface range command.

Syntax

interface range interface-id-list

Parameters

interface-id-list—Specify list of interface IDs. The interface ID can be one of the following types: Ethernet port, VLAN, or port-channel

Default Configuration

None

Command Mode

Interface (Ethernet, Port Channel, VLAN) Configuration mode

User Guidelines

Commands under the interface range context are executed independently on each interface in the range. If the command returns an error on one of the interfaces, it does not stop the execution of the command on other interfaces.

Example

switchxxxxxx(config)# interface range te1/0/1-4
switchxxxxxx(config-if-range)#

shutdown

To disable an interface, use the shutdown Interface Configuration mode command.

To restart a disabled interface, use the no form of this command.

Syntax shutdown no shutdown

Parameters

This command has no arguments or keywords.

Default Configuration

The interface is enabled.

Command Mode

Interface Configuration mode

User Guidelines

The shutdown command set a value of ifAdminStatus (see RFC 2863) to DOWN.

When ifAdminStatus is changed to DOWN, ifOperStatus will be also changed to DOWN.

The DOWN state of ifOperStatus means that the interface does not transmit/receive messages from/to higher levels. For example, if you shut down a VLAN, on which an IP interface is configured, bridging into the VLAN continues, but the switch cannot transmit and receive IP traffic on the VLAN.

Notes:

  • If the switch shuts down an Ethernet port it additionally shuts down the port MAC sublayer too.
  • If the switch shuts down a port channel it additionally shuts down all ports of the port channel too.

Examples

Example 1—The following example disables te1/0/4 operations.

switchxxxxxx(config)#  interface te1/0/4
switchxxxxxx(config-if)#  shutdown
switchxxxxxx(config-if)#

Example 2—The following example restarts the disabled Ethernet port.

switchxxxxxx(config)#  interface te1/0/4
switchxxxxxx(config-if)#  no shutdown
switchxxxxxx(config-if)#

Example 3—The following example shuts down vlan 100.

switchxxxxxx(config)#  interface vlan 100
switchxxxxxx(config-if)#  shutdown
switchxxxxxx(config-if)#

Example 4—The following example shuts down tunnel 1.

switchxxxxxx(config)#  interface tunnel 1
switchxxxxxx(config-if)#  shutdown
switchxxxxxx(config-if)#

Example 5—The following example shuts down Port Channel 3.

switchxxxxxx(config)#  interface po3
switchxxxxxx(config-if)#  shutdown
switchxxxxxx(config-if)#

operation time

To control the time that the port is up, use the operation time Interface (Ethernet, Port Channel) Configuration mode command. To cancel the time range for the port operation time, use the no form of this command.

Syntax operation time time-range-name no operation time

Parameters

  • time-range-name—Specifies a time range the port operates (in up state). When the Time Range is not in effect, the port is shutdown. (Range: 1–32 characters)

Default Configuration

There is no time range configured on the port authorized state.

Command Mode

Interface (Ethernet, Port Channel) Configuration mode

User Guidelines

It is recommended to disable spanning tree or to enable spanning-tree PortFast mode on 802.1x edge ports (ports in auto state that are connected to end stations), in order to proceed to the forwarding state immediately after successful authentication.

Example

The operation time command influences the port if the port status is up. This command defines the time frame during which the port stays up and at which time the port will be shutdown. While the port is in shutdown because of other reasons, this command has no effect.

The following example activates an operation time range (named “morning”) on port te1/0/1.

switchxxxxxx(config)#  interface te1/0/1
switchxxxxxx(config-if)#  operation time morning

description

Created by Sinan KizarLast updated 27 Mar , 2019

To add a description to an interface, use the description Interface (Ethernet, Port Channel) Configuration mode command. To remove the description, use the no form of this command.

Syntax

description string no description

Parameters

string—Specifies a comment or a description of the port to assist the user. (Length: 1–64 characters).

Default Configuration

The interface does not have a description.

Command Mode

Interface (Ethernet, Port Channel) Configuration mode

Example

The following example adds the description ‘SW#3’ to te1/0/4.

switchxxxxxx(config)#  interface te1/0/4
switchxxxxxx(config-if)#  description SW#3

speed

To configure the speed of a given Ethernet interface when not using auto-negotiation, use the speed Interface (Ethernet, Port Channel) Configuration mode command. To restore the default configuration, use the no form of this command.

Syntax

speed {100 | 1000  | 10000}

no speed

Parameters

  • 100—Forces 100 Mbps operation
  • 1000—Forces 1000 Mbps operation
  • 10000—Forces 10000 Mbps operation

Default Configuration

The port operates at its maximum speed capability.

Command Mode

Interface (Ethernet, Port Channel) Configuration mode

User Guidelines

The no speed command in a port-channel context returns each port in the port-channel to its maximum capability.

Example

The following example configures the speed of te1/0/4 to 100 Mbps operation.

switchxxxxxx(config)#  interface te1/0/4
switchxxxxxx(config-if)#  speed 100

duplex

To configure the full/half duplex operation of a given Ethernet interface when not using auto-negotiation, use the duplex Interface (Ethernet, Port Channel) Configuration mode command. To restore the default configuration, use the no form of this command.

Syntax

duplex {half | full}

no duplex

Parameters

  • half—Forces half-duplex operation.
  • full—Forces full-duplex operation.

Default Configuration

The interface operates in full duplex mode.

Command Mode

Interface (Ethernet) Configuration mode

Example

The following example configures te1/0/1 to operate in full duplex mode.

switchxxxxxx(config)#  interface te1/0/1
switchxxxxxx(config-if)#  duplex full

negotiation

To enable auto-negotiation operation for the speed and duplex parameters and master-slave mode of a given interface, use the negotiation Interface (Ethernet, Port Channel) Configuration mode command. To disable auto-negotiation, use the no form of this command.

Syntax

negotiation [capability [capability2… capability5]] [preferred {master | slave}] no negotiation

Parameters

  • Capability—(Optional) Specifies the capabilities to advertise. (Possible values: 10h, 10f, 100h,100f, 1000f ,10000f ).
    • 10h—Advertise 10 half-duplex
    • 10f—Advertise 10 full-duplex
    • 100h—Advertise 100 half-duplex
    • 100f—Advertise 100 full-duplex
    • 1000f—Advertise 1000 full-duplex
    • 10000f—Advertise 10000 full-duplex
  • Preferred—(Optional) Specifies the master-slave preference:
    • Master—Advertise master preference
    • Slave—Advertise slave preference

Default Configuration

If capability is unspecified, defaults to list of all the capabilities of the port and preferred slave mode.

Command Mode

Interface (Ethernet, Port Channel) Configuration mode

Example

The following example enables auto-negotiation on te1/0/1.

switchxxxxxx(config)#  interface te1/0/1
switchxxxxxx(config-if)#  negotiation

flowcontrol

To configure the Flow Control on a given interface, use the flowcontrol Interface (Ethernet, Port Channel) Configuration mode command. To disable Flow Control, use the no form of this command.

Syntax

flowcontrol {auto | on | off}

no flowcontrol

Parameters

  • auto—Specifies auto-negotiation of Flow Control.
  • on—Enables Flow Control.
  • off—Disables Flow Control.

Default Configuration

Flow control is Disabled.

Command Mode

Interface (Ethernet, Port Channel) Configuration mode

User Guidelines

Use the negotiation command to enable flow control auto.

Example

The following example enables Flow Control on port te1/0/1

switchxxxxxx(config)#  interface te1/0/1
switchxxxxxx(config-if)#  flowcontrol on

mdix

Created by Sinan KizarLast updated 27 Mar , 2019

To enable cable crossover on a given interface, use the mdix Interface (Ethernet) Configuration mode command. To disable cable crossover, use the no form of this command.

Syntax

mdix {on | auto}

no mdix

Parameters

  • on—Enables manual MDIX.
  • auto—Enables automatic MDI/MDIX.

Default Configuration

The default setting is Auto.

Command Mode

Interface (Ethernet) Configuration mode

Example

The following example enables automatic crossover on port te1/0/1.

switchxxxxxx(config)#  interface te1/0/1
switchxxxxxx(config-if)#  mdix auto

back-pressure

To enable back pressure on a specific interface, use the back-pressure Interface (Ethernet) Configuration mode command. To disable back pressure, use the no form of this command.

Syntax back-pressure no back-pressure

Parameters

This command has no arguments or keywords.

Default Configuration

Back pressure is disabled.

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

Back-pressure cannot be enabled when EEE is enabled.

Example

The following example enables back pressure on port te1/0/1.

switchxxxxxx(config)#  interface te1/0/1
switchxxxxxx(config-if)#  back-pressure

port jumbo-frame

To enable jumbo frames on the device, use the port jumbo-frame Global Configuration mode command. To disable jumbo frames, use the no form of this command.

Syntax port jumbo-frame no port jumbo-frame

Parameters

This command has no arguments or keywords.

Default Configuration

Jumbo frames are disabled on the device.

Command Mode

Global Configuration mode

User Guidelines

This command takes effect only after resetting the device.

Example

The following example enables jumbo frames on the device.

switchxxxxxx(config)#  port jumbo-frame

clear counters

To clear counters on all or on a specific interface, use the clear counters Privileged

EXEC mode command.

Syntax

clear counters [interface-id]

Parameters

interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.

Default Configuration

All counters are cleared.

Command Mode

Privileged EXEC mode

Example

The following example clears the statistics counters for te1/0/1.

switchxxxxxx#  clear counters te1/0/1

set interface active

To reactivate an interface that was shut down, use the set interface active Privileged EXEC mode command.

Syntax

set interface active {interface-id}

Parameters

interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.

Command Mode

Privileged EXEC mode

User Guidelines

This command is used to activate interfaces that were configured to be active, but were shut down by the system.

Example

The following example reactivates te1/0/1.

switchxxxxxx#  set interface active te1/0/1

errdisable recovery cause

To enable automatic re-activation of an interface after an Err-Disable shutdown, use the errdisable recovery cause Global Configuration mode command. To disable automatic re-activation, use the no form of this command.

Syntax

errdisable recovery cause {all | port-security | dot1x-src-address | acl-deny | stp-bpdu-guard  |  loopback-detection   | storm-control   }

no errdisable recovery cause {all | port-security | dot1x-src-address | acl-deny | stp-bpdu-guard | loopback-detection   | storm-control   }

Parameters

  • all—Enables the error recovery mechanism for all reasons described below.
  • port-security—Enables the error recovery mechanism for the port security Err-Disable state.
  • dot1x-src-address—Enables the error recovery mechanism for the 802.1x Err-Disable state.
  • acl-deny—Enables the error recovery mechanism for the ACL Deny Err-Disable state.
  • stp-bpdu-guard—Enables the error recovery mechanism for the STP BPDU Guard Err-Disable state.
  • loopback-detection—Enables the error recovery mechanism for the Loopback Detection Err-Disable state.
  • storm-control—Enables the error recovery mechanism for the Storm Control Shutdown state.

Default Configuration

Automatic re-activation is disabled.

Command Mode

Global Configuration mode

Example

The following example enables automatic re-activation of an interface after all states.

switchxxxxxx(config)#  errdisable recovery cause all

errdisable recovery interval

To set the error recovery timeout intervalse the errdisable recovery interval Global Configuration mode command. To return to the default configuration, use the no form of this command.

Syntax

errdisable recovery interval seconds no errdisable recovery interval

Parameters

seconds—Specifies the error recovery timeout interval in seconds. (Range: 30– 86400)

Default Configuration

The default error recovery timeout interval is 300 seconds.

Command Mode

Global Configuration mode

Example

The following example sets the error recovery timeout interval to 10 minutes.

switchxxxxxx(config)#  errdisable recovery interval 600

errdisable recovery reset

To reactivate one or more interfaces that were shut down by a given application, use the errdisable recovery reset Privileged EXEC mode command. A single interface, multiple interfaces or all interfaces can be specified.

Syntax

errdisable recovery reset {all | port-security | dot1x-src-address | acl-deny |stp-bpdu-guard |  loopback-detection   | storm-control    | interface interface-id}

Parameters

  • all—Reactivate all interfaces regardless of their state.
  • port-security—Reactivate all interfaces in the Port Security Err-Disable state.
  • dot1x-src-address—Reactivate all interfaces in the 802.1x Err-Disable state.
  • acl-deny—Reactivate all interfaces in the ACL Deny Err-Disable state.
  • stp-bpdu-guard—Reactivate all interfaces in the STP BPDU Guard Err-Disable state.
  • loopback-detection—Reactivate all interfaces in the Loopback Detection Err-Disable state.
  • storm-control—Reactivate all interfaces in the Storm Control Shutdown state.
  • interface interface-id—Reactivate interfaces that were configured to be active, but were shut down by the system.

Default Configuration None.

Command Mode

Privileged EXEC mode

Examples

Example 1—The following example reactivates interface te1/0/1:

switchxxxxxx#  errdisable recovery reset interface te1/0/1

Example 2—The following example reactivates all interfaces regardless their state:

switchxxxxxx#  errdisable recovery reset all

Example 3—The following example enables all interfaces in the port security Err-Disable state

switchxxxxxx#  errdisable recovery reset port-security

show interfaces configuration

To display the configuration for all configured interfaces or for a specific interface, use the show interfaces configuration Privileged EXEC mode command.

Syntax

show interfaces configuration [interface-id | detailed]

Parameters

  • interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.
  • detailed—(Optional) Displays information for non-present ports in addition to present ports.

Default Configuration

Display all interfaces. If detailed is not used, only present ports are displayed.

Command Mode

Privileged EXEC mode

Example

The following example displays the configuration of all configured interfaces:

switchxxxxxx#  show interfaces configuration
 
Flow     Admin  Back      Mdix
 
Port   Type     Duplex  Speed  Neg      control  State  Pressure  Mode ------ -------- ------  -----  -------- -------  -----  --------  ---te1/0/1 1G-Copper   Full    1000   Disabled Off      Up     Disabled  Off te1/0/2 10G-Copper  Full    10000  Disabled Off      Up     Disabled  Off
 
Flow      Admin
 
PO      Type   Speed  Neg        Control   State
 
------  ------ -----  --------   -------   -----
 
Po1                 Disabled   Off       Up
 
switchxxxxxx#  show interfaces configuration
 
Port
 
---te1 te1 te2
 
 
Type
 
-----------
 
10G-Fiber 10G-Fiber 10G-Fiber
 
 
------
 
 
Speed
 
-----
 
10000 10000 10000
 
 
Neg
 
-------
 
Off Off Off
 
 
Flow
 
Cont
 
----
 
On
 
Off Off
 
Legend
 
Neg: Negotiation
 
Flow Cont: Flow Control

show interfaces status

To display the status of all interfaces or of a specific interface, use the show interfaces status Privileged EXEC mode command.

Syntax

show interfaces status [interface-id | detailed]

Parameters

  • interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.
  • detailed—(Optional) Displays information for non-present ports in addition to present ports.

Command Mode

Privileged EXEC mode

Default Configuration

Display for all interfaces. If detailed is not used, only present ports are displayed.

Example

The following example displays the status of all configured interfaces.

switchxxxxxx#  show interfaces status
 
Flow  Link   Back     Mdix
 
Port   Type      Duplex  Speed Neg      ctrl  State  Pressure Mode ------ --------- ------  ----- -------- ----  ------ -------- -te1/0/1  1G-Copper  Full   1000  Disabled Off   Up     Disabled Off te1/0/2  1G-Copper  --     --     --      --    Down   --       --
 
Flow     Link
 
PO     Type      Duplex Speed  Neg     control  State
 
-----  -------   ------ -----  ------- ----     -----Po1    1G        Full  10000  Disabled Off     Up *: The interface was suspended by the system.

show interfaces advertise

To display auto-negotiation advertisement information for all configured interfaces or for a specific interface, use the show interfaces advertise Privileged EXEC mode command.

Syntax

show interfaces advertise [interface-id | detailed]

Parameters

  • interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.
  • detailed—(Optional) Displays information for non-present ports in addition to present ports.

Default Configuration

Display for all interfaces. If detailed is not used, only present ports are displayed.

Command Mode

Privileged EXEC mode

Examples

The following examples display auto-negotiation information.

switchxxxxxx#  show interfaces advertise
Port —te1/0/1 te1/0/2Type———10G-Copper10G-CopperNeg—–EnableEnablePrefered——-MasterSlaveOperational Link Advertisement—————————-10000f, 1000f10000f
switchxxxxxx#  show interfaces advertise te1/0/1 Port:te1/0/1
 
Type: 1G-Copper
 
Link state: Up
 
Auto Negotiation: enabled
 
Preference: Master
Admin Local link AdvertisementOper Local link AdvertisementRemote Local link AdvertisementPriority Resolution10h –yes yes no –10f –yes yes no –100h —yes yes yes –100f —yes yes yes –1000f —-yes yes yes yes
switchxxxxxx#  show interfaces advertise te1/0/1
 
Port: te1/0/1
 
Type: 10G-Copper
 
Link state: Up
 
Auto negotiation: disabled.

show interfaces description

To display the description for all configured interfaces or for a specific interface, use the show interfaces description Privileged EXEC mode command.

Syntax

show interfaces description [interface-id | detailed]

Parameters

  • interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.
  • detailed—(Optional) Displays information for non-present ports in addition to present ports.

Default Configuration

Display description for all interfaces. If detailed is not used, only present ports are displayed.

Command Mode

Privileged EXEC mode

Example

The following example displays the description of all configured interfaces.

switchxxxxxx#  show interfaces description
Port —–te1/0/1 te1/0/2 te1/0/3 te1/0/4Descriptions——————————————–Port that should be used for management only
PO—-Po1Description———–Output

show interfaces counters

To display traffic seen by all the physical interfaces or by a specific interface, use the show interfaces counters Privileged EXEC mode command.

Syntax

show interfaces counters [interface-id | detailed]

Parameters

  • interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.
  • detailed—(Optional) Displays information for non-present ports in addition to present ports.

Default Configuration

Display counters for all interfaces. If detailed is not used, only present ports are displayed.

Command Mode

Privileged EXEC mode

Example

The following example displays traffic seen by all the physical interfaces.

switchxxxxxx#  show interfaces counters te1/0/1
 
Port       InUcastPkts  InMcastPkts  InBcastPkts    InOctets ---------- ------------ ------------ ------------ -----------te1/0/1           0            0            0            0
 
Port       OutUcastPkts OutMcastPkts OutBcastPkts  OutOctets ---------- ------------ ------------ ------------ -----------te1/0/1           0            1            35          7051
 
FCS Errors: 0
 
Single Collision Frames: 0
 
Multiple Collision Frames: 0
 
SQE Test Errors: 0
 
Deferred Transmissions: 0
 
Late Collisions: 0
 
Excessive Collisions: 0
 
Carrier Sense Errors: 0
 
Oversize Packets: 0
 
Internal MAC Rx Errors: 0
 
Symbol Errors: 0
 
Received Pause Frames: 0
 
Transmitted Pause Frames: 0

The following table describes the fields shown in the display.

FieldDescription
InOctetsNumber of received octets.
InUcastPktsNumber of received Unicast packets.
InMcastPktsNumber of received Unicast packets.
InBcastPktsNumber of received broadcast packets.
OutOctetsNumber of transmitted octets.
OutUcastPktsNumber of transmitted Unicast packets.
OutMcastPktsNmber of transmitted Unicast packets.
OutBcastPktsNumber of transmitted Broadcast packets.
FCS ErrorsNumber of frames received that are an integral number of octets in length but do not pass the FCS check.
Single Collision FramesNumber of frames that are involved in a single collision, and are subsequently transmitted successfully.
Multiple CollisionFramesNumber of frames that are involved in more than one collision and are subsequently transmitted successfully.
SQE Test ErrorsNumber of times that the SQE TESTERROR is received. The SQE TEST ERROR is set in accordance with the rules for verification of the SQE detection mechanism in the PLS Carrier Sense Function as described in IEEE Std. 802.3, 2000 Edition, section 7.2.4.6.
Deferred TransmissionsNumber of frames for which the first transmission attempt is delayed because the medium is busy.
Late CollisionsNumber of times that a collision is detected later than one slotTime into the transmission of a packet.
Excessive CollisionsNumber of frames for which transmission fails due to excessive collisions.
Oversize PacketsNumber of frames received that exceed the maximum permitted frame size.
Internal MAC Rx ErrorsNumber of frames for which reception fails due to an internal MAC sublayer receive error.
FieldDescription
Received Pause FramesNumber of MAC Control frames received with an opcode indicating the PAUSE operation.
Transmitted Pause FramesNumber of MAC Control frames transmitted on this interface with an opcode indicating the PAUSE operation.

show ports jumbo-frame

To display the whether jumbo frames are enabled on the device, use the show ports jumbo-frame Privileged EXEC mode command.

Syntax show ports jumbo-frame

Parameters

This command has no arguments or keywords.

Default Configuration

None

Command Mode

Privileged EXEC mode

Example

The following example displays whether jumbo frames are enabled on the device.

switchxxxxxx#  show ports jumbo-frame
 
Jumbo frames are disabled
 
Jumbo frames will be enabled after reset

show errdisable recovery

To display the Err-Disable configuration of the device, use the show errdisable recovery Privileged EXEC mode command.

Syntax

show errdisable recovery

Parameters

This command has no arguments or keywords.

Default Configuration

None

Command Mode

Privileged EXEC mode

Example

The following example displays the Err-Disable configuration.

switchxxxxxx#  show errdisable recovery Timer interval: 300 Seconds
 
Reason                 Automatic Recovery ---------------------- -----------------port-security          Disable dot1x-src-address      Disable acl-deny               Enable stp-bpdu-guard         Disable stp-loopback-guard     Disable loop-detection         Disable storm control          Disable

show errdisable interfaces

To display the Err-Disable state of all interfaces or of a specific interface, use the show errdisable interfaces Privileged EXEC mode command.

Syntax

show errdisable interfaces [interface-id]

Parameters

  • interface—(Optional) Port or port-channel number.

Default Configuration

Display for all interfaces.

Command Mode

Privileged EXEC mode

Example

The following example displays the Err-Disable state of te1/0/1.

switchxxxxxx#  show errdisable interfaces Interface           Reason
 
------------        -----------------te1/0/1           stp-bpdu-guard

clear switchport monitor

To clear monitored statistics on all or on a specific interface or interface list, use the clear switchport monitor Privileged EXEC mode command.

Syntax

clear switchport monitor [interface-id-list]

Parameters

interface-id-list—(Optional) Specifies a list of interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.

Default Configuration

All monitored statistics are cleared.

Command Mode

Privileged EXEC mode

Example

The following example clears the monitored statistics for te1/0/1.

switchxxxxxx#  clear switchport monitor te1/0/1

show switchport monitor

To display the monitored statistics gathered by a specific interface, use the show switchport monitor Privileged EXEC mode command.

Syntax

show switchport monitor interface-id {seconds | minutes | hours } [utilization | tx | rx | frames]

show switchport monitor interface-id {days |weeks} show switchport monitor utilization [interface-id]

Parameters

  • interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or port-channel.
  • seconds— last 20 samples, sampled every 15 seconds.
  • minutes —last 60 samples, sampled every 60 seconds (every round minute according to system time).
  • hours —last 24 samples, sampled every 60 minutes (every round hour according to system time).
  • days —last 7 samples, sampled every 24 hours (midnight to midnight according to system time).
  • weeks —last 12 samples, sampled every 7 days (midnight saturday to midnight saturday according to system time).
  • utilization —shows per time frame the utilization calculated.
  • rx —shows received counters statistics.
  • tx —shows sent counters statistics.
  • frames —show received counters statistics collected per packet size.

Default Configuration

Display monitored statistics for an interface or all interface in case of sshow switchport monitor utilization command.

Command Mode

Privileged EXEC mode

User Guidelines

The show switchport monitor utilization is used to show a utilization summary per interface of the last time frame in each time frame(i.e. last minute, last hour, last day and last week).

The show switchport monitor interface-id is used to show monitored statistics samples collected per time frame and per counter types.

Examples

Example 1—The following example displays monitored statistics utilization seen by interface te1/0/1.

switchxxxxxx#  show switchport monitor utilization te1/0/1
 
Interface     Minutes Rx/TX Hours Rx/TX Days Rx/TX Weeks Rx/TX
 
utilization utilization utilization utilization --------- ------------ ----------- ----------- -----------
 
te1/0/1      95%           80%          60%         20%

Example 2—The following example displays monitored Tx statistics gathered in minutes time frame seen by interface te1/0/1.

switchxxxxxx#  show switchport monitor te1/0/1 minutes tx
Time———-04:22:00(~)04:23:00Unicast frames Sent————–95%80%Broadcast framesSent———–80%70%Multicast framesSent———–60%60%GoodOctetSent——-20%50%

(~) Not all samples are available.

The following table describes the fields shown in the display.

FieldDescription
TimeTime stamp of the current sample in system real time clock.For seconds, minutes and hours format is: hh:mm:ss.For days and weeks format is:<day of week> dd/mm/yy.
Good Octets ReceivedNumber of received octets.
Good Unicast frames ReceivedNumber of received Unicast packets.
Good Multicast frames ReceivedNumber of received Unicast packets.
Good Broadcast frames ReceivedNumber of received broadcast packets.
Good Octets SentNumber of transmitted octets.
Good Unicast frames SentNumber of transmitted Unicast packets.
Good Multicast frames SentNmber of transmitted Unicast packets.
Good Broadcast frames SentNumber of transmitted Broadcast packets.
Frames of 64 bytesNumber of received packets size of 64 bytes.
Frames of 65-127 bytesNumber of received packets size of 65-127 bytes.
Frames of 128-255 bytesNumber of received packets size of 128-255 bytes.
Frames of 256-511 bytesNumber of received packets size of 256-511 bytes.
Frames of 512-1023 bytesNumber of received packets size of 512-1023 bytes.
Frames of 1024-1518 bytesNumber of received packets size of 1024-1518 bytes.
Rx Error Frames ReceivedNumber of frames received that are an integral number of octets in length but do not pass the FCS check.
Rx UtilizationUtilization in percentage for Received frames on the interface.
FieldDescription
Tx UtilizationUtilization in percentage for Sent frames on the interface.
Rx/Tx UtilizationAn average of the Rx Utilization and the Tx Utilization in percentage on the interface.

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