Private Vlan - Dell PowerConnect 5500 Series System User's Manual

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Private VLAN

Private VLANs (PVLANs) provide Layer 2 isolation between ports that share
the same Broadcast domain, or in other words, they create a
point-to-multipoint Broadcast domain. The ports can be located anywhere in
the Layer 2 network, as opposed to protected ports which must be in the same
stack.
The switch ports can be members of a Private VLAN (PVLAN) in the
following membership types:
• Promiscuous ports that can communicate with all ports of the same
PVLAN, including the isolated ports of the same PVLAN.
• Isolated ports that have complete Layer 2-isolation from the other ports
within the same PVLAN, but not from the promiscuous ports. Isolated
ports can communicate with promiscuous ports.
The PVLAN entity is implemented by allocating the following VLANs per PVLAN:
• Primary VLAN: Carries traffic from promiscuous ports.
• Isolated VLAN: Carries traffic from isolated ports.
D E L L C O N F I D E N T I A L – P R E L I M I N A R Y 1 0 / 3 0 / 1 3 - F O R P R O O F O N LY
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Dell PowerConnect 55xx Systems User Guide
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