24.2 Support function

The table below describes the Layer 2 switch functionality supported by the Switch.

Some types of functionality can be combined, but others cannot. The limitations regarding functionality combinations are shown below.

Table 24-1: Layer 2 switch support functionality
Supported functions		Overview of authentication VLAN functionality
MAC Address Learning		The learning of MAC addresses registered in the MAC address table
VLAN	Port VLAN	The division of switches into virtual internal groups by port
	Protocol VLAN	The division of switches into virtual internal groups by protocol
	MAC VLAN	The division of switches into virtual internal groups by source MAC address
	Default VLAN	The VLAN to which ports belong by default when the configuration is not set
	Native VLAN	Another name for the port VLAN that handles untagged frames on trunk ports, protocol ports, and MAC ports
	Tunneling	The aggregation, and tunneling, of the VLANs of multiple users on another VLAN
	Tag translation	The conversion of VLAN tags for forwarding to another VLAN
	L2 protocol frame transparency functionality	The forwarding of frames with the Layer 2 protocol. Spanning tree (BPDU) and IEEE802.1X(EAP are transparent.
Spanning Tree Protocols	PVST+	The prevention of looping between switches at the VLAN level
	Single Spanning Tree	The prevention of looping between switches at the terminal level
	Multiple Spanning Tree	The prevention of looping between switches at the MST instance level
Ring Protocol		The use of the ring topology to provide redundancy for Layer 2 networks
IGMP snooping and MLD snooping		The control of multicast traffic within a VLAN on a Layer 2 switch
Inter-port relay blocking functionality		The blocking of all communication between specified ports

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