Avaya one-X 1603SW, Administrator'S Manual, Page: 91 / 124

Link Layer Discovery Protocol (LLDP)
Issue 1 June 2010 91
port-based operation. These switches typically send multicast 802.1X packets to authenticating
devices.
These switches support the following three scenarios:
●
Standalone telephone (Telephone Only Authenticates) - When the deskphone is
configured for Supplicant Mode (DOT1XSTAT=2), the deskphone can support
authentication from the switch.
●
Telephone with attached PC (Telephone Only Authenticates) - When the deskphone is
configured for Supplicant Mode (DOT1X=2 and DOT1XSTAT=2), the deskphone can
support authentication from the switch. The attached PC in this scenario gains access to
the network without being authenticated.
●
Telephone with attached PC (PC Only Authenticates) - When the deskphone is
configured for Pass-Through Mode or Pass-Through Mode with Logoff (DOT1X=0 or 1 and
DOT1XSTAT=0), an attached PC running 802.1X supplicant software can be
authenticated by the data switch. The telephone in this scenario gains access to the
network without being authenticated.
Some switches support authentication of multiple devices connected through a single switch
port. This is known as multi-supplicant or MAC-based operation. These switches typically send
unicast 802.1X packets to authenticating devices. These switches support the following two
scenarios:
●
Standalone deskphone (Deskphone Only Authenticates) - When the deskphone is
configured for Supplicant Mode (DOT1XSTAT=2), the deskphone can support
authentication from the switch. When DOT1X is "0" or "1", the deskphone is unable to
authenticate with the switch.
●
Deskphone and PC Dual Authentication - Both the deskphone and the connected PC
can support 802.1X authentication from the switch. The deskphone may be configured for
Pass-Through Mode or Pass-Through Mode with Logoff (DOT1X=0 or 1 and
DOT1XSTAT=1 or 2). The attached PC must be running 802.1X supplicant software.
Link Layer Discovery Protocol (LLDP)
Link Layer Discovery Protocol (LLDP) is an open standards layer 2 protocol IP deskphones use
to advertise their identity and capabilities and to receive administration from an LLDP server.
LAN equipment can use LLDP to manage power, administer VLANs, and provide some
administration.
The transmission and reception of LLDP is specified in IEEE 802.1AB-2005. The 1603SW-I SIP
IP Deskphones use Type-Length-Value (TLV) elements specified in IEEE 802.1AB-2005, TIA
TR-41 Committee - Media Endpoint Discovery (LLDP-MED, ANSI/TIA-1057), and Proprietary
elements. LLDP Data Units (LLDPDUs) are sent to the LLDP Multicast MAC address
(01:80:c2:00:00:0e).
These deskphones:
●
do not support LLDP on the secondary Ethernet interface.