Cisco Catalyst 2960-X User Manual

Inaccessible Authentication Bypass Authentication Results
The behavior of the inaccessible authentication bypass feature depends on the authorization state of the port:
•
If the port is unauthorized when a host connected to a critical port tries to authenticate and all servers
are unavailable, the switch puts the port in the critical-authentication state in the RADIUS-configured
or user-specified access VLAN.
•
If the port is already authorized and reauthentication occurs, the switch puts the critical port in the
critical-authentication state in the current VLAN, which might be the one previously assigned by the
RADIUS server.
•
If the RADIUS server becomes unavailable during an authentication exchange, the current exchange
times out, and the switch puts the critical port in the critical-authentication state during the next
authentication attempt.
You can configure the critical port to reinitialize hosts and move them out of the critical VLAN when the
RADIUS server is again available. When this is configured, all critical ports in the critical-authentication state
are automatically re-authenticated.
Inaccessible Authentication Bypass Feature Interactions
Inaccessible authentication bypass interacts with these features:
• Guest VLAN—Inaccessible authentication bypass is compatible with guest VLAN. When a guest VLAN
is enabled on 8021.x port, the features interact as follows:
◦
If at least one RADIUS server is available, the switch assigns a client to a guest VLAN when the
switch does not receive a response to its EAP request/identity frame or when EAPOL packets are
not sent by the client.
◦
If all the RADIUS servers are not available and the client is connected to a critical port, the switch
authenticates the client and puts the critical port in the critical-authentication state in the
RADIUS-configured or user-specified access VLAN.
◦
If all the RADIUS servers are not available and the client is not connected to a critical port, the
switch might not assign clients to the guest VLAN if one is configured.
◦
If all the RADIUS servers are not available and if a client is connected to a critical port and was
previously assigned to a guest VLAN, the switch keeps the port in the guest VLAN.
• Restricted VLAN—If the port is already authorized in a restricted VLAN and the RADIUS servers are
unavailable, the switch puts the critical port in the critical-authentication state in the restricted VLAN.
• 802.1x accounting—Accounting is not affected if the RADIUS servers are unavailable.
• Private VLAN—You can configure inaccessible authentication bypass on a private VLAN host port.
The access VLAN must be a secondary private VLAN.
• Voice VLAN—Inaccessible authentication bypass is compatible with voice VLAN, but the
RADIUS-configured or user-specified access VLAN and the voice VLAN must be different.
• Remote Switched Port Analyzer (RSPAN)—Do not configure an RSPAN VLAN as the
RADIUS-configured or user-specified access VLAN for inaccessible authentication bypass.
Catalyst 2960-X Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX
286 OL-29048-01
Configuring IEEE 802.1x Port-Based Authentication
802.1x Authentication with Inaccessible Authentication Bypass

Cisco Catalyst 2960-X Specifications

General

Console port	RJ-45
USB 2.0 ports quantity	2
SFP module slots quantity	4
Installed SFP modules quantity	-
Gigabit Ethernet (copper) ports quantity	48
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Power source	AC
Input current	5 A
AC input voltage	100 - 240 V
Power consumption (typical)	60.9 W
Number of power supply units	1
Redundant power supply (RPS) support	Yes
Operating altitude	0 - 3000 m
Non-operating altitude	0 - 4000 m
Storage temperature (T-T)	-25 - 70 °C
Operating temperature (T-T)	-5 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Switching protocols	UDP, TCP, RADIUS/TACACS+
Number of VLANs	1023
Networking standards	IEEE 802.1ab, IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3ae, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3at, IEEE 802.3az, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
Throughput	107.1 Mpps
Jumbo frames	9216
Number of queues	8
MAC address table	16000 entries
Number of static routes	1000
DHCP features	DHCP server
Authentication	MAC-based authentication, Port-based authentication
Security algorithms	802.1x RADIUS, SNMP, SSH
Access Control List (ACL) rules	3
Switch type	Managed
Switch layer	L2/L3
Safety	UL 60950-1, CAN/CSA-C22.2 No. 60950-1, EN 60950-1, IEC 60950-1, AS/NZS 60950-1
Form factor	1U
Product color	Black
Total Power over Ethernet (PoE) budget	370 W
Power over Ethernet (PoE) ports quantity	24
Power over Ethernet plus (PoE+) ports quantity	12
Memory type	DRAM
Noise level	39 dB
Flash memory	128 MB
Internal memory	512 MB
Processor frequency	600 MHz
Mean time between failures (MTBF)	276870 h

Weight and Dimensions

Depth	368 mm
Width	445 mm
Height	45 mm
Weight	5800 g