User`s guide

Types of VLANs

4-4

Even though they are physically connected to the same switch, for

the members of the different VLANs to communicate, the traffic

must go through the IP routing functionality provided in the switch.

This means that each VLAN must be configured as a router interface

with a unique IP address.

Spanning Switches with Port-Based VLANs.

To create a port-based

VLAN that spans two switches, you must do two things:

❑

Assign the port on each switch to the VLAN.

❑

Cable the two switches together using one port on each

switch per VLAN.

Figure 4-2 illustrates a single VLAN that spans two AT-9108 switches.

All ports on both switches belong to VLAN

Sales

. The two switches

are connected using slot 8, port 4 on System 1, and slot 1, port 1 on

System 2.

Figure 4-2

Single Port-Based VLAN Spanning Two Switches

LINK DISABLED

12345678

POWER

DIAG

234 567

1 8

GIGABIT ETHERNET SWITCH

ACTIVITY

LINK

1000BASE-X NETWORK PORTS