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To enter interface configuration mode for an Ethernet IEEE 802.3 interface, use the interface ethernet command.
interface ethernet [ chassis_ID / ] slot / port
chassis_ID |
(Optional) Specifies the Fabric Extender chassis ID. The chassis ID is from 100 to 199.
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slot |
Slot from 1 to 3. The following list defines the slots available:
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port |
Port number within a particular slot. The port number is from 1 to 128. |
None
Global configuration mode
Release |
Modification |
---|---|
4.0(0)N1(1a) |
This command was introduced. |
4.0(1a)N2(1) |
This command was modified to provide the chassis ID argument. |
5.0(3)N1(1) |
Support for Layer 3 interfaces was added. |
This example shows how to enter configuration mode for Ethernet interface 1/4:
switch(config)# interface ethernet 1/4 switch(config-if)#
This example shows how to enter configuration mode for a host interface on a Fabric Extender:
switch(config)# interface ethernet 101/1/1 switch(config-if)#
Command |
Description |
---|---|
interface vethernet |
Configures a virtual Ethernet interface. |
show fex |
Displays all configured Fabric Extender chassis connected to the switch. |
show interface ethernet |
Displays various parameters of an Ethernet IEEE 802.3 interface. |
speed |
Sets the speed on the interface. |
vtp (interface) |
Enables VLAN Trunking Protocol (VTP) on an interface. |
To configure a Layer 3 Ethernet IEEE 802.3 routed interface, use the interface ethernet command.
interface ethernet [ chassis_ID / ] slot / port [ .subintf-port-no ]
chassis_ID |
(Optional) Specifies the Fabric Extender chassis ID. The chassis ID is from 100 to 199.
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slot |
Slot from 1 to 3. The following list defines the slots available:
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port |
Port number within a particular slot. The port number is from 1 to 128. |
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. |
(Optional) Specifies the subinterface separator. |
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subintf-port-no |
(Optional) Port number for the subinterface. The range is from 1 to 48. |
None
Global configuration modeInterface configuration mode
Release |
Modification |
---|---|
5.0(3)N1(1) |
This command was introduced. |
You must use the no switchport command in the interface configuration mode to configure the interface as a Layer 3 routed interface. When you configure the interface as a Layer 3 interface, all Layer 2 specific configurations on this interface are deleted.
Use the switchport command to convert a Layer 3 interface into a Layer 2 interface. When you configure the interface as a Layer 2 interface, all Layer 3 specific configurations on this interface are deleted.
This example shows how to enter configuration mode for a Layer 3 Ethernet interface 1/5:
switch(config)# interface ethernet 1/5 switch(config-if)# no switchport switch(config-if)# ip address 10.1.1.1/24 switch(config-if)#
This example shows how to configure a Layer 3 subinterface for Ethernet interface 1/5 in the global configuration mode:
switch(config)# interface ethernet 1/5.2 switch(config-if)# no switchport switch(config-subif)# ip address 10.1.1.1/24 switch(config-subif)#
This example shows how to configure a Layer 3 subinterface in interface configuration mode:
switch(config)# interface ethernet 1/5 switch(config-if)# no switchport switch(config-if)# interface ethernet 1/5.1 switch(config-subif)# ip address 10.1.1.1/24 switch(config-subif)#
This example shows how to convert a Layer 3 interface to a Layer 2 interface:
switch(config)# interface ethernet 1/5 switch(config-if)# no switchport switch(config-if)# ip address 10.1.1.1/24 switch(config-if)# switchport switch(config-if)#
Command |
Description |
---|---|
bandwidth |
Sets the bandwidth parameters for an interface. |
delay |
Configures the interface throughput delay value. |
encapsulation |
Sets the encapsulation type for an interface. |
ip address |
Sets a primary or secondary IP address for an interface. |
inherit |
Assigns a port profile to an interface. |
interface vethernet |
Configures a virtual Ethernet interface. |
no switchport |
Configures an interface as a Layer 3 interface. |
service-policy |
Configures a service policy for an interface. |
show fex |
Displays all configured Fabric Extender chassis connected to the switch. |
show interface ethernet |
Displays various parameters of an Ethernet IEEE 802.3 interface. |
To create a loopback interface and enter interface configuration mode, use the interface loopback command. To remove a loopback interface, use the no form of this command.
interface loopback number
no interface loopback number
number |
Interface number; valid values are from 0 to 1023. |
None
Global configuration mode
Release |
Modification |
---|---|
5.0(3)N1(1) |
This command was introduced. |
Use the interface loopback command to create or modify loopback interfaces.
From the loopback interface configuration mode, the following parameters are available:
This command does not require a license.
This example shows how to create a loopback interface:
switch(config)# interface loopback 50 switch(config-if)# ip address 10.1.1.1/24 switch(config-if)#
Command |
Description |
---|---|
show interface loopback |
Displays information about the traffic on the specified loopback interface. |
To enter the management interface configuration mode, use the interface mgmt command.
interface mgmt mgmt-intf-num
mgmt-intf-num |
Management interface number. The interface number is 0. |
None
Global configuration mode
Release |
Modification |
---|---|
4.0(0)N1(1a) |
This command was introduced. |
This example shows how to enter the management interface configuration mode:
switch# configure terminal switch(config)# interface mgmt 0 switch(config-if)#
Command |
Description |
---|---|
show interface mgmt |
Displays information about the management interface. |
cdp enable |
Enables the Cisco Discovery Protocol (CDP) on an interface. |
description (interface) |
Adds a description to an interface configuration. |
duplex |
Configures the duplex mode for an interface. |
lldp (interface) |
Enables the reception or transmission of Link Layer Discovery Protocol (LLDP) packets on an interface. |
rate-limit cpu direction |
Configures the packet per second (PPS) rate limit for an interface. |
snmp trap link-status |
Enables Simple Network Management Protocol (SNMP) link trap generation on an interface. |
speed |
Configures the transmit and receive speed for an interface. |
vrf member |
Adds an interface to a virtual routing and forwarding (VRF) instance. |
To create an EtherChannel interface and enter interface configuration mode, use the interface port-channel command. To remove an EtherChannel interface, use the no form of this command.
interface port-channel channel-number [ . subintf-channel-no ]
no interface port-channel channel-number [ . subintf-channel-no ]
channel-number |
Channel number that is assigned to this EtherChannel logical interface. The range is from 1 to 4096. |
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. |
(Optional) Specifies the subinterface separator.
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subintf-channel-no |
(Optional) Port number of the EtherChannel subinterface. The range is from 1 to 4093.
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None
Global configuration mode
Interface configuration mode
Release |
Modification |
---|---|
4.0(0)N1(1a) |
This command was introduced. |
5.0(3)N1(1) |
Support for Layer 3 interfaces and subinterfaces was added. |
A port can belong to only one channel group.
When you use the interface port-channel command for Layer 2 interfaces, follow these guidelines:
You must use the no switchport command in the interface configuration mode to configure the EtherChannel interface as a Layer 3 interface. When you configure the interface as a Layer 3 interface, all Layer 2 specific configurations on this interface are deleted.
Use the switchport command to convert a Layer 3 EtherChannel interface into a Layer 2 interface. When you configure the interface as a Layer 2 interface, all Layer 3 specific configurations on this interface are deleted.
You can configure one or more subinterfaces on a port channel made from routed interfaces.
This example shows how to create an EtherChannel group interface with channel-group number 50:
switch(config)# interface port-channel 50 switch(config-if)#
This example shows how to create a Layer 3 EtherChannel group interface with channel-group number 10:
switch(config)# interface port-channel 10 switch(config-if)# no switchport switch(config-if)# ip address 192.0.2.1/24 switch(config-if)#
This example shows how to configure a Layer 3 EtherChannel subinterface with channel-group number 1 in interface configuration mode:
switch(config)# interface port-channel 10 switch(config-if)# no switchport switch(config-if)# interface port-channel 10.1 switch(config-subif)# ip address 192.0.2.2/24 switch(config-subif)#
This example shows how to configure a Layer 3 EtherChannel subinterface with channel-group number 20.1 in global configuration mode:
switch(config)# interface port-channel 20.1 switch(config-subif)# ip address 192.0.2.3/24 switch(config-subif)#
Command |
Description |
---|---|
encapsulation |
(Layer 3 interfaces) Sets the encapsulation type for an interface. |
ip address |
(Layer 3 interfaces) Sets a primary or secondary IP address for an interface. |
no switchport |
(Layer 3 interfaces) Configures an interface as a Layer 3 interface. |
show interface |
Displays configuration information about interfaces. |
show lacp |
Displays LACP information. |
show port-channel summary |
Displays information on the EtherChannels. |
vtp (interface) |
Enables VLAN Trunking Protocol (VTP) on an interface. |