Allied Telesis AT-S63 - Manual (Page 691)

AT-S63 Management Software Menus Interface User’s Guide
Section VI: Virtual LANs 691
Guidelines Follow these guidelines when implementing a MAC address-based VLAN:
ˆ MAC address-based VLANs are supported on the AT-9424Ti/SP,
AT-9448T/SP, and AT-9448Ts/SP switches. This feature is not
supported on the AT-9424T/GB and AT-9424T/SP switches.
ˆ The switch can support up to a total of 4094 port-based, tagged,
protected ports, and MAC address-based VLANs.
ˆ The source nodes of this type of VLAN must send only untagged
packets. A MAC address-based VLAN does not support tagged
packets.
ˆ The switch supports MAC address-based VLANs when operating in
the user configured VLAN mode, which is the default setting for the
switch. The switch cannot be running a multiple VLAN mode. To set
the VLAN mode, refer to “Selecting a VLAN Mode” on page 666.
ˆ The egress ports of a VLAN are considered as a community. Assigning
a port to one MAC address in a VLAN implicitly defines the port as an
egress port of all the addresses in the same VLAN.
ˆ A source MAC address must be assigned at least one egress port to
be considered part of a MAC address-based VLAN. Otherwise, VLAN
membership is determined by the PVID of the port where the packets
are received.
ˆ A port can be an egress port of more than one MAC address-based
VLANs.
ˆ A MAC address can belong to only one MAC address-based VLAN at
a time.
ˆ A broadcast packet crosses VLAN boundaries when a port is an
egress port of a MAC address-based VLAN and an untagged member
of a port-based VLAN. Given that there is no way for the switch to
determine the VLAN to which the broadcast packet belongs, it floods
the packet on all ports of all affected VLANs.
ˆ Entering a MAC address as part of a MAC address-based VLAN does
not add the address to the MAC address table. The address appears in
the MAC address table during the normal learning process of the
switch.
ˆ A MAC address-based VLAN is supported in an edge switch, where
end nodes are connected directly to the switch, as well as in an
intermediary switch, where the switch is connected to other Ethernet
switches or hubs.
ˆ The switch can support a total of 1024 MAC addresses in all its MAC
address-based VLANs.
ˆ A MAC address-based VLAN does not support multicast MAC
addresses.
ˆ Egress ports cannot be part of a static or LACP trunk.