Cisco Systems 8841 Manual De Usuario
Cisco IP Phone configuration
Cisco AP configuration
PEAP
WEP
Optional CCKM
PEAP
802.1x
PEAP
TKIP
WPA with optional
CCKM
CCKM
PEAP
WPA
PEAP
AES
WPA2
PEAP
WPA2
EAP-FAST
WEP
Optional CCKM
EAP-FAST
802.1x
EAP-FAST
TKIP
WPA
Optional CCKM
EAP-FAST with WPA
EAP-FAST
AES
WPA2
EAP-FAST with WPA2
For additional information about Cisco WLAN Security, see
.
For more information about configuring authentication and encryption schemes on APs, see the Cisco Aironet
Configuration Guide for your model and release under the following URL:
Configuration Guide for your model and release under the following URL:
802.1X Authentication
The Cisco IP Phones support 802.1X Authentication.
Cisco IP Phones and Cisco Catalyst switches traditionally use Cisco Discovery Protocol (CDP) to identify
each other and determine parameters such as VLAN allocation and inline power requirements. CDP does not
identify locally attached workstations. Cisco IP Phones provide an EAPOL pass-through mechanism. This
mechanism allows a workstation attached to the Cisco IP Phone to pass EAPOL messages to the 802.1X
authenticator at the LAN switch. The pass-through mechanism ensures that the IP phone does not act as the
LAN switch to authenticate a data endpoint before accessing the network.
each other and determine parameters such as VLAN allocation and inline power requirements. CDP does not
identify locally attached workstations. Cisco IP Phones provide an EAPOL pass-through mechanism. This
mechanism allows a workstation attached to the Cisco IP Phone to pass EAPOL messages to the 802.1X
authenticator at the LAN switch. The pass-through mechanism ensures that the IP phone does not act as the
LAN switch to authenticate a data endpoint before accessing the network.
Cisco IP Phones also provide a proxy EAPOL Logoff mechanism. In the event that the locally attached PC
disconnects from the IP phone, the LAN switch does not see the physical link fail, because the link between
the LAN switch and the IP phone is maintained. To avoid compromising network integrity, the IP phone sends
an EAPOL-Logoff message to the switch on behalf of the downstream PC, which triggers the LAN switch to
clear the authentication entry for the downstream PC.
disconnects from the IP phone, the LAN switch does not see the physical link fail, because the link between
the LAN switch and the IP phone is maintained. To avoid compromising network integrity, the IP phone sends
an EAPOL-Logoff message to the switch on behalf of the downstream PC, which triggers the LAN switch to
clear the authentication entry for the downstream PC.
Support for 802.1X authentication requires several components:
• Cisco IP Phone: The phone initiates the request to access the network. Cisco IP Phones contain an 802.1X
supplicant. This supplicant allows network administrators to control the connectivity of IP phones to
the LAN switch ports. The current release of the phone 802.1X supplicant uses the EAP-FAST and
EAP-TLS options for network authentication.
the LAN switch ports. The current release of the phone 802.1X supplicant uses the EAP-FAST and
EAP-TLS options for network authentication.
Cisco IP Phone 8811, 8841, 8851, and 8861 Administration Guide for Cisco Unified Communications Manager 10.5
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Supported Security Features