GS3700/XGS3700 Series User’s Guide
336
CHAPTER 33
Private VLAN
33.1 Private VLAN Overview
Use private VLAN if you want you to block traffic between ports in the same VLAN. Com m unity and
I solated VLANs are secondary private VLANs that must be associated with a Primary private
VLAN.
• Primary: Ports in a Prim ary VLAN are promiscuous and they can communicate with all
promiscuous ports in the same primary VLAN, and all ports in associated community and isolated
VLANs. They cannot communicate with ports in different primary VLANs.
• Com m unity: Ports in a Com m unity VLAN can communicate with promiscuous ports in an
associated Prim ary VLAN and other community ports in the same Community VLAN. They
cannot communicate with ports in I solated VLANs, non-associated Prim ary VLAN promiscuous
ports nor community ports in different Comm unity VLANs.
• I solated: Ports in an I solated VLAN can communicate with promiscuous ports in an associated
Primary VLAN only. They cannot communicate with other isolated ports in the same I solated
VLAN, non-associated Primary VLAN promiscuous ports nor any community ports.
Table 163 PVLAN Graphic Key
LABEL DESCRIPTION
P-VLAN 100 Primary private VLAN
C-VLAN 101 Community private VLAN
I-VLAN 102 Isolated private VLAN
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