About Link Layer Discovery Protocol (Lldp) - Avaya 9608 Administrator's Manual

prompting the user for ID and password entry and the ID and password are not overwritten by
deskphone software downloads.
An IP deskphone can support several different 802.1X authentication scenarios, depending on
the capabilities of the Ethernet data switch to which it is connected. Some switches may
authenticate only a single device per switch port. This is known as single-supplicant or
port-based operation. These switches typically send multicast 802.1X packets to authenticating
devices.
These switches support the following three scenarios:
Standalone deskphone (Telephone Only Authenticates) - When the deskphone is
●
configured for Supplicant Mode (DOT1X=2), the deskphone can support authentication
from the switch.
Deskphone with attached PC (Telephone Only Authenticates) - When the deskphone is
●
configured for Supplicant Mode (DOT1X=2), the deskphone can support authentication
from the switch. The attached PC in this scenario gains access to the network without
being authenticated.
Deskphone 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),
an attached PC running 802.1X supplicant software can be authenticated by the data
switch. The deskphone 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 (Telephone Only Authenticates) - When the deskphone is
●
configured for Supplicant Mode (DOT1X=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). The attached
PC must be running 802.1X supplicant software.

About Link Layer Discovery Protocol (LLDP)

Link Layer Discovery Protocol (LLDP) is an open standards layer 2 protocol IP Telephones 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.
About Link Layer Discovery Protocol (LLDP)
Issue 1 May 2011 119