VLAN Ranges
|
Use |
|
|
0, 4095 |
Reserved for system use only |
|
1 |
|
|
2-1001 |
For Ethernet VLANs |
|
1002-1005 |
Cisco defaults for FDDI and Token Ring |
|
1006-4094 |
Ethernet VLANs only, unusable on specific legacy platforms |
Each VLAN on the network must have a unique VID. The valid range of user-configurable ISL VLANs is 1 to 1024. The valid range of VLANs specified in the IEEE 802.1Q standard is 1 to 4094.
VLAN Ranges
This table describes VLAN ranges and their use.
|
VLAN Ranges |
Range |
Use |
Propagated |
|
0, 4095 |
Reserved |
For system use only. VLANs cannot be seen or used. |
— |
|
1 |
Normal |
Cisco default VLAN. This VLAN can be used but not modified or deleted. |
Yes |
|
2-1001 |
Normal |
These VLANs can be created, used, and deleted. |
Yes |
|
1002-1005 |
Normal |
Cisco defaults for FDDI and Token Ring. These cannot be deleted. |
Yes |
© 2006 Cisco Systems, Inc. Defining VLANs 2-51
|
VLAN Ranges |
Range |
Use |
Propagated |
|
1006-4094 |
Layer 3 ports and some software features require internal VLANs. Internal VLANs are allocated from 1006 and up. You cannot use a VLAN that has been allocated for such use. To display the VLANs used internally, enter the show vlan internal usage command. Switches running Cisco Catalyst product series software do not support configuration of VLANs 1006-1024. If you configure VLANs 1006-1024, ensure that the VLANs do not extend to any switches running Cisco Catalyst product series software. You must enable the extended system ID to use extended-range VLANs. |
No |
As a best practice, assign extended VLANs beginning with 4094 and work downward because some switches use extended-range VIDs for internal use, starting at the low end of the extended range. Refer to "Configuring Extended-Range VLANs" in the software configuration guide associated with your switch platform and software release.
2-52 Building Cisco Multilayer Switched Networks (BCMSN) v3.0 © 2006 Cisco Systems, Inc.
Describing Trunking Configuration Commands
This topic identifies the commands used to configure trunking.
Continue reading here: Trunking Configuration Commands
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