beautypg.com

Vlans that span switches – Allied Telesis AT-FS970M Series User Manual

Page 967

background image

AT-FS970M Switch Command Line User’s Guide

967

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.

VLANs that Span

Switches

To create a MAC address-based VLAN that spans switches, you must
replicate the MAC addresses of the VLAN nodes on all the switches where
the VLAN exists. The same MAC address-based VLAN on different
switches must have the same list of MAC addresses.

Figure 174 illustrates an example of a MAC address-based VLAN that
spans two AT-FS970M Switches. The VLAN consists of three nodes on
each switch. Table 102 on page 968 lists the details of the VLAN on the
switches. Note that each VLAN contains the complete set of MAC
addresses of all VLAN nodes along with the appropriate egress ports on
the switches.

Figure 174. Example of a MAC Address-based VLAN that Spans Switches