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Cisco Catalyst Blade Switch 3030 Command Reference
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Chapter 2 Cisco
Catalyst
Blade Switch 3030 Cisco IOS Commands
switchport mode
switchport mode
Use the
switchport mode
interface configuration command 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
|
dynamic
{
auto
|
desirable
} |
trunk
}
no switchport mode
{
access
|
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
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.
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.
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.
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.
When you enter
dynamic desirable
mode, the interface becomes a trunk interface if the neighboring
interface is set to
trunk
,
desirable
, or
auto
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.
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.
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.
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.
Release
Modification
12.2(25)SEE
This command was introduced.