27 VLAN Manager

Super-aggregated VLAN

A super-aggregated VLAN allows multiple VLANs to be placed within another VLAN. This feature allows you to construct Layer 2 paths and channels. It is useful for Virtual Private Network (VPN) applications in which you need to provide a private, dedicated, Ethernet connection for an individual client that can transparently reach its subnet across multiple networks.

Private VLAN

NOTE

PVLAN read-only support is provided.

Private VLAN (PVLAN) provides device isolation through the application of Layer 2 forwarding constraints. PVLAN allows end devices to share the same IP subnet while being isolated at Layer 2. This enables network designers to employ larger subnets and thereby reduce the address management overhead.

There are three types of PVLAN:

Primary VLAN — A primary VLAN is a unique and common VLAN identifier within the PVLAN domain and its VLAN ID pairs.

Isolated VLAN — An isolated VLAN is a secondary VLAN that isolates all hosts connected to its ports at Layer 2.

Community VLAN — A community VLAN is a secondary VLAN that is associated with a group of ports that connect to a certain community of end devices based on mutual trust relationships.

A PVLAN domain is built with at least one pair of VLAN IDs: one primary VLAN ID (Vp) plus one or more secondary VLAN IDs (Vs).

FIGURE 315 Private VLAN

Remote Switched Port Analyzer

Remote Switched Port Analyzer (RSPAN) VLAN is used to monitor source ports, VLANs, and destination ports on different switches in your network. You can configure any VLAN as an RSPAN VLAN that meets the following conditions:

The same RSPAN VLAN is used for an RSPAN session in all the switches.

All participating switches support RSPAN.

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Brocade Network Advisor IP User Manual

 

53-1003056-01

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Brocade Communications Systems IP250 user manual Super-aggregated Vlan, Private Vlan, Remote Switched Port Analyzer