Allied Telesis AT-S39 - Manual (Page 124)

Section II: Local and Telnet Management
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example, a VLAN that spans three switches requires one port on
each switch to interconnect the various sections of that VLAN.
In network configurations with many individual VLANs that span
switches, ports are often ineffectively used to interconnect the
various VLANs.
Port-based Example 1
Figure 33 illustrates an example of one AT-8024 Fast Ethernet Switch
with three port-based VLANs. (For purposes of the following examples,
the Default_VLAN is not shown.)
Figure 33 Port-based VLAN - Example 1
Link
Mode
Link Mode
100 FULL
ACT
MODE
COL FAULT
MASTER
PWR
AT-8024
10Base-T / 100Base-TX Fast Ethernet Switch RS-232 TERMINAL PORT
Router
AT-8024 Ethernet Switch
Sales VLAN Production VLAN
(VID 2) (VID 4)
Engineering VLAN
(VID 3)
WAN
Port 4 Port 12 Port 22