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Cisco CATALYST 2960 User Manual

Cisco CATALYST 2960
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10-10
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
Understanding IEEE 802.1x Port-Based Authentication
Beginning with Cisco IOS Release 12.2(55)SE, you can filter out verbose system messages generated
by the authentication manager. The filtered content typically relates to authentication success. You can
also filter verbose messages for 802.1x authentication and MAB authentication. There is a separate
command for each authentication method:
The no authentication logging verbose global configuration command filters verbose messages
from the authentication manager.
The no dot1x logging verbose global configuration command filters 802.1x authentication verbose
messages.
The no mab logging verbose global configuration command filters MAC authentication bypass
(MAB) verbose messages
For more information, see the command reference for this release.
Ports in Authorized and Unauthorized States
During 802.1x authentication, depending on the switch port state, the switch can grant a client access to
the network. The port starts in the unauthorized state. While in this state, the port that is not configured
as a voice VLAN port disallows all ingress and egress traffic except for 802.1x authentication, CDP, and
STP packets. When a client is successfully authenticated, the port changes to the authorized state,
allowing all traffic for the client to flow normally. If the port is configured as a voice VLAN port, the
port allows VoIP traffic and 802.1x protocol packets before the client is successfully authenticated.
If a client that does not support 802.1x authentication connects to an unauthorized 802.1x port, the
switch requests the client’s identity. In this situation, the client does not respond to the request, the port
remains in the unauthorized state, and the client is not granted access to the network.
authentication fallback
fallback-profile
dot1x fallback fallback-profile Configure a port to use web authentication as a
fallback method for clients that do not support
authentication.
authentication host-mode
[multi-auth | multi-domain |
multi-host | single-host]
dot1x host-mode {single-host |
multi-host | multi-domain}
Allow a single host (client) or multiple hosts on an
authorized port.
authentication order dot1x mac-auth-bypass Provides the flexibility to define the order of
authentication methods to be used.
authentication periodic dot1x reauthentication Enable periodic re-authentication of the client.
authentication port-control {auto
| force-authorized | force-un
authorized}
dot1x port-control {auto |
force-authorized |
force-unauthorized}
Enable manual control of the authorization state of
the port.
authentication timer dot1x timeout Set the timers.
authentication violation {protect |
restrict | shutdown}
dot1x violation-mode {shutdown
| restrict | protect}
Configure the violation modes that occur when a
new device connects to a port or when a new
device connects to a port after the maximum
number of devices are connected to that port.
Table 10-2 Authentication Manager Commands and Earlier 802.1x Commands (continued)
The authentication manager
commands in Cisco IOS
Release 12.2(50)SE or later
The equivalent 802.1x commands in
Cisco IOS Release 12.2(46)SE and
earlier Description

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Cisco CATALYST 2960 Specifications

General IconGeneral
ManageableYes
StackingNo
ModelCatalyst 2960 Series Switches
Power over Ethernet (PoE)Available on some models (IEEE 802.3af)
VLANs255 active VLANs
FeaturesQoS
Operating Temperature32 to 113°F (0 to 45°C)
Relative Humidity10% to 85% non-condensing
Power ConsumptionVaries by model (30W to 400W)

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