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Catalyst 3750 Switch Command Reference
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Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
show vlan
This is an example of output from the show vlan internal usage command. It shows that VLANs 1025
and 1026 are being used as internal VLANs for Fast Ethernet routed ports 23 and 24 on stack member
1.
If you want to use one of these VLAN IDs, you must first shut down the routed port, which releases the
internal VLAN, and then create the extended-range VLAN. When you start up the routed port, another
internal VLAN number is assigned to it.
Switch> show vlan internal usage
VLAN Usage
---- -------------
1025 FastEthernet1/0/23
1026 FastEthernet1/0/24
Related Commands Command Description
private-vlan Configures a VLAN as a community, isolated, or primary VLAN or
associates a primary VLAN with secondary VLANs.
switchport mode Configures the VLAN membership mode of a port.
vlan (global
configuration)
Enables VLAN configuration mode where you can configure VLANs 1 to
4094.
vlan (VLAN
configuration)
Configures VLAN characteristics in the VLAN database. Only available for
normal-range VLANs (VLAN IDs 1 to 1005). Do not enter leading zeros.
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