Filter
Top Products
Chapter 26: MAC Address-based VLANs
290 Section VI: Virtual LANs
If security is a major concern for your network, you might not want to
assign a port as an egress port to more than one VLAN when planning
your MAC address-based VLANs.
When a packet whose source MAC address is part of a MAC address-
based VLAN arrives on a port, the switch performs one of the following
actions:
If the packet’s destination MAC address is not in the MAC address
table, the switch floods the packet out all egress ports of the VLAN,
excluding the port where the packet was received.
If the packet’s destination MAC address is in the MAC address table
and if the port where the address was learned is one of the VLAN’s
egress ports, the switch forwards the packet to the port.
If the packet’s destination MAC address is in the MAC address table
but the port where the address was learned is not one of the VLAN’s
egress ports, the switch discards the packet.