User's Manual

usually send unicast 802.1X packets to authenticating devices. These switches support the
following two scenarios:
• Standalone phone (Telephone Only Authenticates) - When you configure the IP phone for
Supplicant Mode (DOT1XSTAT=2), the phone can support authentication from the switch.
When DOT1X is “0” or “1” the phone cannot authenticate with the switch.
About Link Layer Discovery Protocol (LLDP)
Link Layer Discovery Protocol (LLDP) is an open standards layer 2 protocol that IP phones
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.
IEEE 802.1AB-2005 specifies the transmission and reception of LLDP. The Avaya B189
Conference IP Phones 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 phones:
• do not forward frames received with the 802.1AB LLDP group multicast address as the
destination MAC address between the Ethernet line interface and the secondary Ethernet
interface.
The Avaya B189 Conference IP phone initiates LLDP after receiving an LLDPDU message
from an appropriate system. After the phone is initiated, the phone sends an LLDPDU every
30 seconds or as specified by LLDP_XMIT_SECS parameter with the following contents:
Table 9: LLDPDU transmitted by the phones
Category TLV Name (Type) TLV Info String (Value)
Basic Mandatory Chassis ID IPv4 IP Address of phone.
Basic Mandatory Port ID MAC address of the phone.
Basic Mandatory Time-To-Live 120 seconds.
Basic Optional System Name The Host Name sent to the DHCP server in
DHCP option 12.
Basic Optional System Capabilities Bit 2 (Bridge) is set in the System Capabilities
if the phone has an internal Ethernet switch. If
Bit 2 is set in Enabled Capabilities then the
secondary port is enabled.
Bit 5 (phone) in the System Capabilities. If Bit
5 is set in the Enabled Capabilities than the
phone is registered.
Administering Deskphone Options
66 Administering Avaya B189 Conference IP Phone December 2013
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