Avaya one-X 1603SW, Administrator'S Manual, Page: 89 / 124

IEEE 802.1X
Issue 1 June 2010 89
supplicant operation will not be supported. The system parameter DOT1X determines how the
telephones handle 802.1X multicast packets and proxy logoff, as follows:
●
When DOT1X = 0 (the default) the deskphone forwards 802.1X multicast packets from the
Authenticator to the PC attached to the deskphone and forwards multicast packets from
the attached PC to the Authenticator (multicast pass-through). Proxy Logoff is not
supported.
●
When DOT1X = 1, the deskphone supports the same multicast pass-through as when
DOT1X=0. Proxy Logoff is supported.
●
When DOT1X = 2, the deskphone forwards multicast packets from the Authenticator only
to the deskphone, ignoring multicast packets from the attached PC (no multicast
pass-through). Proxy Logoff is not supported.
Regardless of the DOT1X setting, the deskphone always properly directs unicast packets from
the Authenticator to the deskphone or its attached PC, as dictated by the MAC address in the
packet.
1603SW-I SIP IP Deskphones will respond to unicast EAPOL frames (frames with the
deskphone’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.
The system parameter DOT1XSTAT determines how the deskphone 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.
Note:
Note:
If the Ethernet line interface link fails, the 802.1X Supplicant, if enabled, enters
the Disconnected state. The 802.1X Supplicant variable userLogoff normally has
a value of FALSE. This variable will be set to TRUE before the telephone drops
the link on the Ethernet line interface (and back to FALSE after the link has been
restored). The userLogoff variable may also be briefly set to TRUE to force the
Supplicant into the LOGOFF state when new credentials are entered.