Extreme Networks ExtremeWare 7.2e Installation And User Manual page 93

Spanning Switches with Port-Based VLANs
To create a port-based VLAN that spans two switches, you must do two things:
1 Assign the port on each switch to the VLAN.
2 Cable the two switches together using one port on each switch per VLAN.
Figure 14 illustrates a single VLAN that spans a BlackDiamond switch and a Summit 400 switch. All
ports on the BlackDiamond switch belong to VLAN Sales. Port 1X and ports 1 through 28 on the
Summit 400 switch also belong to VLAN Sales. The two switches are connected using slot 8, port 4 on
system 1 (the BlackDiamond switch), and port 1X on system 2 (the Summit 400 switch).
Figure 14: Single port-based VLAN spanning two switches
System 1
1
To create multiple VLANs that span two switches in a port-based VLAN, a port on system 1 must be
cabled to a port on system 2 for each VLAN you want to have span across the switches. At least one
port on each switch must be a member of the corresponding VLANs, as well.
Figure 15 illustrates two VLANs spanning two switches. On system 2, port 1X and ports 25 through 28
are part of VLAN Accounting; ports 21 through 24 and ports 2X through 4X are part of VLAN
Engineering. On system 1, all ports on slot 1 are part of VLAN Accounting; all ports on slot 8 are part of
VLAN Engineering.
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Types of VLANs
System 2
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