Allied Telesis AT-S26 - Manual (Page 100)

Configuring Virtual LANs and Quality of Service
100
The VLANs and port assignments for the top AT-9006SX/SC Gigabit
Switch in Figure 43 are listed in Table 2.
The Accounting VLAN, assigned a VID value of 2, contains two untagged
ports, ports 1 and 4, which connect to the AT-8224XL Fast Ethernet
Switches. The VLAN also has two tagged ports, Port 2 and Port 5. Port 5
functions as the uplink port to the bottom AT-9006SX/SC switch, while
Port 2 provides a connection to an IEEE 802.1Q compliant server capable
of handing tagged frames, thereby enabling the server to be a
simultaneous member of multiple VLANs.
The Manufacturing VLAN has two untagged ports, ports 3 and 6, which
connect the Gigabit Switch to two AT-8224XL switches, as well as two
tagged ports, ports 2 and 5, which provide the same functions as in the
Accounting VLAN.
Alos included in the top Gigabit Switch is a Engineering VLAN with the
VID of 4. It consists of just two ports, tagged ports 2 and 5. Port 2 is
connected to the IEEE 802.1Q compliant server and Port 5 is the uplink
port. This VLAN will enable the Engineering VLAN on the bottom Gigabit
Switch to access the shared server along with the other VLANs.
The VLANs and port assignments for the bottom AT-9006SX/SC switch
are listed in Table 3.
Table 2 VLAN Tagging Example Port Assignments, Top Switch
VLAN Example
Accounting VLAN
(VID 2) Manufacturing
VLAN (VID 3) Engineering VLAN
(VID 4)
Untagged
Ports Tagged
Ports Untagged
Ports Tagged
Ports Untagged
Port Tagged
Port
Top AT-9006SX/SC
Switch 1, 4 2, 5 3, 6 2, 5 2, 5
Table 3 VLAN Tagging Example Port Assignments, Bottom Switch
VLAN Example
Engineering VLAN
(VID 4) Manufacturing
VLAN (VID 6)
Untagged
Ports Tagged
Ports Untagged
Ports Tagged
Ports
Bottom AT-9006SX/SC
Switch 1, 4 2 3, 6 2