Specifications

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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Command Reference
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Chapter Cisco Catalyst Blade Switch 3130 for Dell Cisco IOS Commands
switchport trunk
• remove removes the defined list of VLANs from those currently set instead of replacing the list.
Valid IDs are from 1 to 1005; extended-range VLAN IDs are valid in some cases.
Note You can remove extended-range VLANs from the allowed VLAN list, but you cannot
remove them from the pruning-eligible list.
Separate nonconsecutive VLAN IDs with a comma; use a hyphen to designate a range of IDs.
• except lists the VLANs that should be calculated by inverting the defined list of VLANs. (VLANs
are added except the ones specified.) Valid IDs are from 1 to 1005. Separate nonconsecutive VLAN
IDs with a comma; use a hyphen to designate a range of IDs.
• vlan-atom is either a single VLAN number from 1 to 4094 or a continuous range of VLANs
described by two VLAN numbers, the lesser one first, separated by a hyphen.
Defaults The default encapsulation is negotiate.
VLAN 1 is the default native VLAN ID on the port.
The default for all VLAN lists is to include all VLANs.
Command Modes Interface configuration
Command History
Usage Guidelines Encapsulation:
• The switchport trunk encapsulation command is supported only for platforms and interface
hardware that support IEEE 802.1Q formats.
• You cannot configure one end of the trunk as an IEEE 802.1Q trunk and the other end as a nontrunk
port. However, you can configure one port as nontrunk and a different port on the same switch as an
IEEE 802.1Q trunk.
• If you enter the negotiate keywords DTP negotiation is used to resolve the encapsulation format,.
The no form of the command resets the trunk encapsulation format to the default.
• The no form of the encapsulation command resets the encapsulation format to the default.
Native VLANs:
• All untagged traffic received on an IEEE 802.1Q trunk port is forwarded with the native VLAN
configured for the port.
• If a packet has a VLAN ID that is the same as the sending-port native VLAN ID, the packet is sent
without a tag; otherwise, the switch sends the packet with a tag.
• The no form of the native vlan command resets the native mode VLAN to the appropriate default
VLAN for the device.
Release Modification
12.2(40)EX1 This command was introduced.