Configuring VLANs 563
received traffic to the promiscuous ports and other community ports using
the same secondary VLAN. Isolated ports transmit received traffic to the
promiscuous ports only.
The ports to which the broadcast traffic is forwarded depend on the type of
port on which the traffic was received. If the received port is a host port,
traffic is broadcast to all promiscuous and trunk ports. If the received port is a
community port, the broadcast traffic is forwarded to all promiscuous, trunk,
and community ports in the same secondary VLAN. A promiscuous port
broadcasts traffic to other promiscuous ports, isolated ports, and community
ports.
Table 22-3. Forwarding Rules for Traffic in Primary VLAN
Table 22-4. Forwarding Rules for Traffic in Community 1 VLAN
To
From promiscuous community 1 community 2 isolated stack (trunk)
promiscuous allow allow allow allow allow
community 1 N/A N/A N/A N/A N/A
community 2 N/A N/A N/A N/A N/A
isolatedN/AN/AN/AN/AN/A
stack (trunk) allow allow allow allow allow
To
From promiscuous community 1 community 2 isolated stack (trunk)
promiscuous N/A N/A N/A N/A N/A
community 1allowallowdenydenyallow
community 2 N/A N/A N/A N/A N/A
isolatedN/AN/AN/AN/AN/A
stack (trunk) allow allow deny deny allow