Cisco Catalyst 2960-X Command Reference

•
The shutdown and no shutdown interface configuration commands.
•
The no udld enable global configuration command, followed by the udld {aggressive | enable} global
configuration command reenables UDLD globally.
•
The no udld port interface configuration command, followed by the udld port or udld port aggressive
interface configuration command reenables UDLD on the specified interface.
•
The errdisable recovery cause udld and errdisable recovery interval interval global configuration
commands automatically recover from the UDLD error-disabled state.
Examples
This example shows how to enable UDLD on an port:
Switch(config)# interface gigabitethernet6/0/1
Switch(config-if)# udld port
This example shows how to disable UDLD on a fiber-optic interface despite the setting of the udld global
configuration command:
Switch(config)# interface gigabitethernet6/0/1
Switch(config-if)# no udld port
You can verify your settings by entering the show running-config or the show udld interface privileged
EXEC command.
Related Commands
DescriptionCommand
Displays UDLD administrative and operational status for all ports or the specified
port.
show udld
Enables aggressive or normal mode in UDLD or sets the configurable message
timer time.
udld
Resets all interfaces shut down by UDLD and permits traffic to pass through
again.
udld reset
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
124 OL-29043 -01
Layer 2 Commands
udld port

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