Cisco Catalyst 2960-X Command Reference

spanning-tree vlan
To configure Spanning Tree Protocol (STP) on a per-virtual LAN (VLAN) basis, use the spanning-tree vlan
command in global configuration mode. To return to the default settings, use the no form of this command.
spanning-tree vlan vlan-id [forward-time seconds| hello-time seconds| max-age seconds| priority priority|
[root {primary| secondary} [diameter net-diameter]]]
no spanning-tree vlan vlan-id [forward-time| hello-time| max-age| priority| root]
Syntax Description
VLAN range associated with the spanning-tree instance. The range is 1 to
4094.
vlan-id
(Optional) Sets the STP forward delay time in second. The range is 4 to 30.
The default is 15.
forward-time seconds
(Optional) Specifies the duration, in seconds, between the generation of
configuration messages by the root switch. The range is 1 to 10.
The default is 2.
hello-time seconds
(Optional) Sets the maximum number of seconds the information in a bridge
packet data unit (BPDU) is valid. The range is 6 to 40.
The default is 20.
max-age seconds
(Optional) Sets the STP bridge priority. The range is 0 to 61440 in increments
of 4096.
The default for the primary root switch is 24576.
The default for the secondary root switch is 28672.
priority priority
(Optional) Forces this switch to be the root switch.root primary
(Optional) Specifies this switch to act as the root switch should the primary
root fail.
root secondary
(Optional) Specifies the maximum number of switches between any two
points of attachment of end stations. The range is 2 through 7.
diameter net -diameter
Command Default
Spanning tree is enabled on all VLANs.
Command Modes
Global configuration
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
OL-29043 -01 113
Layer 2 Commands
spanning-tree vlan

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