Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 1512)

1440 Brocade Network Advisor SAN + IP User Manual
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VLAN Manager
36
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 642 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.