Cisco 3560x-24p 参考指南
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Catalyst 3750-X and 3560-X Switch Command Reference
OL-21522-02
Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands
switchport mode
switchport mode
Use the switchport mode interface configuration command on the switch stack or on a standalone switch
to configure the VLAN membership mode of a port. Use the no form of this command to reset the mode
to the appropriate default for the device.
to configure the VLAN membership mode of a port. Use the no form of this command to reset the mode
to the appropriate default for the device.
switchport mode {access | dot1q-tunnel | dynamic {auto | desirable} | private-vlan | trunk}
no switchport mode {access | dot1q-tunnel | dynamic | trunk}
Syntax Description
Defaults
The default mode is dynamic auto.
Command Modes
Interface configuration
Command History
Usage Guidelines
A configuration that uses the access, dot1q-tunnel, or trunk keywords takes effect only when you
configure the port in the appropriate mode by using the switchport mode command. The static-access
and trunk configuration are saved, but only one configuration is active at a time.
configure the port in the appropriate mode by using the switchport mode command. The static-access
and trunk configuration are saved, but only one configuration is active at a time.
When you enter access mode, the interface changes to permanent nontrunking mode and negotiates to
convert the link into a nontrunk link even if the neighboring interface does not agree to the change.
convert the link into a nontrunk link even if the neighboring interface does not agree to the change.
When you enter trunk mode, the interface changes to permanent trunking mode and negotiates to
convert the link into a trunk link even if the interface connecting to it does not agree to the change.
convert the link into a trunk link even if the interface connecting to it does not agree to the change.
When you enter dynamic auto mode, the interface converts the link to a trunk link if the neighboring
interface is set to trunk or desirable mode.
interface is set to trunk or desirable mode.
access
Set the port to access mode (either static-access or dynamic-access depending
on the setting of the switchport access vlan interface configuration command).
The port is set to access unconditionally and operates as a nontrunking, single
VLAN interface that sends and receives nonencapsulated (non-tagged) frames.
An access port can be assigned to only one VLAN.
on the setting of the switchport access vlan interface configuration command).
The port is set to access unconditionally and operates as a nontrunking, single
VLAN interface that sends and receives nonencapsulated (non-tagged) frames.
An access port can be assigned to only one VLAN.
dot1q-tunnel
Set the port as an IEEE 802.1Q tunnel port.
dynamic auto
Set the interface trunking mode dynamic parameter to auto to specify that the
interface convert the link to a trunk link. This is the default switchport mode.
interface convert the link to a trunk link. This is the default switchport mode.
dynamic desirable
Set the interface trunking mode dynamic parameter to desirable to specify that
the interface actively attempt to convert the link to a trunk link.
the interface actively attempt to convert the link to a trunk link.
private-vlan
See the
command.
trunk
Set the port to trunk unconditionally. The port is a trunking VLAN Layer 2
interface. The port sends and receives encapsulated (tagged) frames that
identify the VLAN of origination. A trunk is a point-to-point link between two
switches or between a switch and a router.
interface. The port sends and receives encapsulated (tagged) frames that
identify the VLAN of origination. A trunk is a point-to-point link between two
switches or between a switch and a router.
Release
Modification
12.2(53)SE2
This command was introduced.