
FIGURE 93 Example PVLAN network with tagged ports
The following table lists the differences between PVLANs and standard VLANs.
Comparison of PVLANs and standard port-based VLANs TABLE 56
Forwarding behavior Private VLANs Standard VLANs
All ports within a VLAN constitute a common layer broadcast domain No Yes
Broadcasts and unknown unicasts are forwarded to all the VLAN ports
by default
No (isolated VLAN)
Yes (community VLAN)
Yes (Primary)
Yes
Known unicasts No (isolated VLAN)
Yes (community VLAN)
Yes (Primary)
Yes
VLANs
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