3Com 9000 manual Vlan Features, Layer Modules Switch Feature Fabric Description

Managing Virtual LANs 43

ports. For example, to create a VLAN for a GEN interface module that resides in chassis slot 6 (when the switch fabric module is installed in slot 8), you could configure the switch fabric module to create a VLAN on backplane ports 11 and 12.

Features Your CoreBuilder 9000 supports the VLAN features shown in Table 5.

Table 5 VLAN Features

	Layer 2
	Modules
	and
	Switch	Layer 3
Feature	Fabric		Description
	Module	Modules
VLAN	Yes	Yes	On a per-module basis, establishes a
mode:			less-restrictive VLAN environment (allOpen
allOpen or			mode) or a more secure VLAN environment
allClosed			(allClosed mode). The VLAN mode dictates the
			requirements for the port-, protocol-, and net-
			work-based VLANs.
Per-port	Yes	Yes	On a per-port basis, dictates that transmitted
IEEE			frames are encapsulated and tagged as speci-
802.1Q			fied in the IEEE 802.1Q standard and that
tagging			received frames must be encapsulated and
			tagged.
Port-based	Yes	Yes	Determine VLAN membership based solely on
VLANS			the port on which the frame was received. The
			system provides a special port-based VLAN by
			default, with all ports of all modules, called the
			default VLAN and supports static (user-config-
			ured) VLAN configuration.
Protocol-	No	Yes	Determine VLAN membership based on the
based			port on which the frame was received, as well
VLANs			as the protocol of the frame. You can use the
			protocol-based VLANs (and applied routing
			interfaces) to establish routing between VLANs.
Network-	No	Yes	Determine IP VLAN membership based on the
based			port on which the frame was received, as well
VLANs (IP			as the IP protocol and destination network
only)			address of the frame.