Publication date: June, 2015
Revision A1
2-15.2 Protocol -based VLAN
This section describe Protocol -based VLAN, The Switch support Protocol include Ethernet LLC
SNAP Protocol,
LLC
The Logical Link Control (LLC) data communication protocol layer is the upper sub-layer of the
Data Link Layer (which is itself layer 2, just above the Physical Layer) in the seven-layer OSI
reference model. It provides multiplexing mechanisms that make it possible for several
network protocols (IP, IPX, Decnet and Appletalk) to coexist within a multipoint network and to
be transported over the same network media, and can also provide flow control and automatic
repeat request (ARQ) error management mechanisms.
SNAP
The Subnetwork Access Protocol (SNAP) is a mechanism for multiplexing, on networks using
IEEE 802.2 LLC, more protocols than can be distinguished by the 8-bit 802.2 Service Access
Point (SAP) fields. SNAP supports identifying protocols by Ethernet type field values; it also
supports vendor-private protocol identifier spaces. It is used with IEEE 802.3, IEEE 802.4, IEEE
802.5, IEEE 802.11 and other IEEE 802 physical network layers, as well as with non-IEEE 802
physical network layers such as FDDI that use 802.2 LLC.
2-15.2.1 Protocol to Group
This page allows you to add new protocols to Group Name (unique for each Group) mapping
entries as well as allow you to see and delete already mapped entries for the selected stack
switch unit switch.
Web Interface
To configure Protocol -based VLAN configuration in the web interface:
1. Click Protocol -based VLAN configuration and add new entry.
2. Specify the Ethernet LLC SNAP Protocol and Group Name.
3. Click Apply.
Figure 2-15.2.1: The Protocol to Group Mapping Table
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