Static Virtual LANs (VLANs)

Introduction

Types of Static VLANs Available in the Switch

Port-Based VLANs

This type of static VLAN creates a specific layer-2 broadcast domain comprised of member ports that bridge IPv4 traffic among themselves. Port-Based VLAN traffic is routable on the switches covered in this guide.

Protocol-Based VLANs

This type of static VLAN creates a layer-3 broadcast domain for traffic of a particular protocol, and is comprised of member ports that bridge traffic of the specified protocol type among themselves. Some protocol types are routable on the switches covered in this guide. Refer to table 2-1 on page 2-7.

Designated VLANs

The switch uses these static, port-based VLAN types to separate switch management traffic from other network traffic. While these VLANs are not limited to management traffic only, they can provide improved security and availability for management traffic.

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The Default VLAN: This port-based VLAN is always present in the switch and, in the default configuration, includes all ports as members (page 2- 45).

The Primary VLAN: The switch uses this port-based VLAN to run certain features and management functions, including DHCP/Bootp responses for switch management. In the default configuration, the Default VLAN is also the Primary VLAN. However, you can designate another, port-based, non-default VLAN, as the Primary VLAN (page 2-45).

■The Secure Management VLAN: This optional, port-based VLAN estab- lishes an isolated network for managing the ProCurve switches that support this feature. Access to this VLAN and to the switch’s management functions are available only through ports configured as members (page 2-46).

■Voice VLANs: This optional, port-based VLAN type enables you to sepa- rate, prioritize, and authenticate voice traffic moving through your net- work, and to avoid the possibility of broadcast storms affecting VoIP (Voice-over-IP) operation (page 2-54).

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