Creating An Extended-Range Vlan - Cisco WS-C3750-48PS-S Software Configuration Manual

Configuring Extended-Range VLANs
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Creating an Extended-Range VLAN

You create an extended-range VLAN in global configuration mode by entering the vlan global
configuration command with a VLAN ID from 1006 to 4094. This command accesses the config-vlan
mode. The extended-range VLAN has the default Ethernet VLAN characteristics (see
the MTU size and RSPAN configuration are the only parameters you can change. Refer to the description
of the vlan global configuration command in the command reference for defaults of all parameters. If
you enter an extended-range VLAN ID when the switch is not in VTP transparent mode, an error
message is generated when you exit from config-vlan mode, and the extended-range VLAN is not
created.
Extended-range VLANs are not saved in the VLAN database; they are saved in the switch running
configuration file. You can save the extended-range VLAN configuration in the switch startup
configuration file by using the copy running-config startup-config privileged EXEC command.
Before you create an extended-range VLAN, you can verify that the VLAN ID is not used internally by
Note
entering the show vlan internal usage privileged EXEC command. If the VLAN ID is used internally
and you want to free it up, go to
section on page 13-15
Beginning in privileged EXEC mode, follow these steps to create an extended-range VLAN:
Command
Step 1
configure terminal
Step 2 vtp mode transparent
Step 3 vlan vlan-id
Step 4 mtu mtu-size
Step 5 remote-span
Step 6
end
Catalyst 3750 Switch Software Configuration Guide
13-14
Although the switch stack supports a total of 1005 (normal-range and extended-range) VLANs, the
number of routed ports, SVIs, and other configured features affects the use of the switch hardware.
If you try to create an extended-range VLAN and there are not enough hardware resources available,
an error message is generated, and the extended-range VLAN is rejected.
In a switch stack, the whole stack uses the same running configuration and saved configuration, and
extended-range VLAN information is shared across the stack.
before creating the extended-range VLAN.
Purpose
Enter global configuration mode.
Configure the switch for VTP transparent mode, disabling VTP.
Enter an extended-range VLAN ID and enter config-vlan mode. The
range is 1006 to 4094.
(Optional) Modify the VLAN by changing the MTU size.
Note
(Optional) Configure the VLAN as the RSPAN VLAN. See the
"Configuring a VLAN as an RSPAN VLAN" section on page
Return to privileged EXEC mode.
the"Creating an Extended-Range VLAN with an Internal VLAN ID"
Although all VLAN commands appear in the CLI help in
config-vlan mode, only the mtu mtu-size and remote-span
commands are supported for extended-range VLANs.
Chapter 13 Configuring VLANs
Table 13-2) and
27-18.
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