Contents
xii
Catalyst 3750 Switch Software Configuration Guide
78-16180-02
CHAPTER
13 Configuring VLANs 13-1
Understanding VLANs 13-1
Supported VLANs 13-3
VLAN Port Membership Modes 13-3
Configuring Normal-Range VLANs 13-5
Token Ring VLANs 13-6
Normal-Range VLAN Configuration Guidelines 13-6
VLAN Configuration Mode Options 13-7
VLAN Configuration in config-vlan Mode 13-7
VLAN Configuration in VLAN Database Configuration Mode 13-7
Saving VLAN Configuration 13-8
Default Ethernet VLAN Configuration 13-8
Creating or Modifying an Ethernet VLAN 13-9
Deleting a VLAN 13-11
Assigning Static-Access Ports to a VLAN 13-11
Configuring Extended-Range VLANs 13-12
Default VLAN Configuration 13-13
Extended-Range VLAN Configuration Guidelines 13-13
Creating an Extended-Range VLAN 13-14
Creating an Extended-Range VLAN with an Internal VLAN ID 13-15
Displaying VLANs 13-16
Configuring VLAN Trunks 13-16
Trunking Overview 13-17
Encapsulation Types 13-18
802.1Q Configuration Considerations 13-19
Default Layer 2 Ethernet Interface VLAN Configuration 13-19
Configuring an Ethernet Interface as a Trunk Port 13-19
Interaction with Other Features 13-20
Configuring a Trunk Port 13-20
Defining the Allowed VLANs on a Trunk 13-21
Changing the Pruning-Eligible List 13-22
Configuring the Native VLAN for Untagged Traffic 13-23
Configuring Trunk Ports for Load Sharing 13-24
Load Sharing Using STP Port Priorities 13-24
Load Sharing Using STP Path Cost 13-26
Configuring VMPS 13-27
Understanding VMPS 13-28
Dynamic-Access Port VLAN Membership 13-28
Default VMPS Client Configuration 13-29
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