3Com 3800 - Manual (Page 82)

5-4 C HAPTER 5: V IRTUAL LAN S (VLAN S )
Expanding Port-Based VLANs Across Switches
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 5-2 illustrates a single VLAN that spans two Switches. All ports
on both Switches belong to VLAN Sales. The two Switches are
connected using port 12 on Switch 1, and port 18 on Switch 2.
Figure 5-2 Single port-based VLAN spanning two Switches
In a port-based VLAN, to create multiple VLANs that span two
Switches, a port on Switch 1 must be cabled to a port on Switch 2 for
each VLAN that you want to create. At least one port on each Switch
must be a member of one of the VLANs, as well.
Sales
Switch 1
Switch 2
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM