Avaya 16-601443 Manuel D’Utilisation

Page de 142
IEEE 802.1X
Issue 5 April 2010
77
 
IEEE 802.1X
Certain 1600 Series IP Telephones support the IEEE 802.1X standard for pass-through and 
Supplicant operation. The system parameter 
 determines how the telephones handle 
802.1X multicast packets and proxy logoff, as follows:
When DOT1X = 0, the telephone forwards 802.1X multicast packets from the 
Authenticator to the PC attached to the telephone and forwards multicast packets from the 
attached PC to the Authenticator (multicast pass-through). Proxy Logoff is not supported.
When DOT1X = 1, the telephone supports the same multicast pass-through as when 
DOT1X=0. Proxy Logoff is supported.
When DOT1X = 2, the telephone forwards multicast packets from the Authenticator only to 
the telephone, ignoring multicast packets from the attached PC (no multicast 
pass-through). Proxy Logoff is not supported.
Regardless of the DOT1X setting, the telephone always properly directs unicast packets 
from the Authenticator to the telephone or its attached PC, as dictated by the MAC 
address in the packet.
All 1600 Series telephones support Supplicant operation and parameter values as specified in 
IEEE 802.1X, but, as of software Release 1.3, only if the value of the parameter DOT1XSTAT is 
"1" or "2". If DOT1XSTAT has any other value, Supplicant operation is not supported.
IP telephones will respond to unicast EAPOL frames (frames with the telephone’s MAC address 
as the destination MAC address, and a protocol type of 88-8E hex) received on the Ethernet 
line interface if the value of DOT1XSTAT is "1" or "2", but will only respond to EAPOL frames 
that have the PAE group multicast address as the destination MAC address if the value of 
DOT1XSTAT is "2". If the value of DOT1XSTAT is changed to "0" from any other value after the 
Supplicant has been authenticated, an EAPOL-Logoff will be transmitted before the Supplicant 
is disabled.
As of software Release 1.3, the system parameter DOT1XSTAT determines how the telephone 
handles Supplicants as follows:
When DOT1XSTAT=0, Supplicant operation is completely disabled. This is the default 
value.
When DOT1XSTAT=1, Supplicant operation is enabled, but responds only to received 
unicast EAPOL messages.
When DOT1XSTAT=2, Supplicant operation is enabled and responds to received unicast 
and multicast EAPOL messages.