If the number of VLANs on the switch exceeds the number of supported spanning-tree instances, we
recommend that you configure the IEEE 802.1s Multiple STP (MSTP) on your switch to map multiple
VLANs to a single spanning-tree instance.
•
When a switch in a stack learns a new VLAN or deletes or modifies an existing VLAN (either through
VTP over network ports or through the CLI), the VLAN information is communicated to all stack
members.
•
When a switch joins a stack or when stacks merge, VTP information (the vlan.dat file) on the new
switches will be consistent with the active switch.
Related Topics
Creating or Modifying an Ethernet VLAN
Deleting a VLAN , on page 2119
Assigning Static-Access Ports to a VLAN
Monitoring VLANs
Creating or Modifying an Ethernet VLAN
Deleting a VLAN , on page 2119
Assigning Static-Access Ports to a VLAN
Monitoring VLANs
Creating or Modifying an Ethernet VLAN
Deleting a VLAN , on page 2119
Assigning Static-Access Ports to a VLAN
Monitoring VLANs
Creating or Modifying an Ethernet VLAN
Deleting a VLAN , on page 2119
Assigning Static-Access Ports to a VLAN
Monitoring VLANs
Creating or Modifying an Ethernet VLAN
Deleting a VLAN , on page 2119
Assigning Static-Access Ports to a VLAN
Monitoring VLANs
Creating or Modifying an Ethernet VLAN
Example: Creating a VLAN Name, on page 2126
Extended-Range VLAN Configuration Guidelines
Extended-range VLANs are VLANs with IDs from 1006 to 4094.
VTP 3 only supports extended-range VLANs.
Follow these guidelines when creating extended-range VLANs:
•
VLAN IDs in the extended range are not saved in the VLAN database and are not recognized by VTP
unless the switch is running VTP version 3.
•
You cannot include extended-range VLANs in the pruning eligible range.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
2114
Information About VLANs
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