Some switches support authentication of multiple devices connected through a single switch port.
This operation is known as multi-supplicant or MAC-based operation. These switches usually send
unicast 802.1X packets to authenticating devices. These switches support the following two
scenarios:
• Standalone phone (Deskphone 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.
• Phone and computer Dual Authentication - Both the IP phone and the connected computer
can support 802.1X authentication from the switch. You can configure the IP phone for Pass-
Through Mode or Pass-Through Mode with Logoff (DOT1X=0 or 1 and DOT1XSTAT=1 or 2).
The attached computer must be running 802.1X supplicant software.
Related links
About IEEE 802.1X on page 110
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 9600 Series 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 phones:
• do not support LLDP on the secondary Ethernet interface.
• 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 9600 Series IP deskphone 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 10: 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.
Table continues…
Administering Deskphone Options
March 2018 Administering Avaya 9608/9608G/9611G/9621G/9641G/9641GS IP Deskphones H.
323 112
Comments on this document? infodev@avaya.com
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