Cisco Catalyst 2960-X Command Reference

spanning-tree mst configuration
To enter MST-configuration mode, use the spanning-tree mst configuration command in global configuration
mode. To return to the default settings, use the no form of this command.
spanning-tree mst configuration
no spanning-tree mst configuration
Syntax Description
This command has no arguments or keywords.
Command Default
The default value for the Multiple Spanning Tree (MST) configuration is the default value for all its parameters:
•
No VLANs are mapped to any MST instance (all VLANs are mapped to the Common and Internal
Spanning Tree [CIST] instance).
•
The region name is an empty string.
•
The revision number is 0.
Command Modes
Global configuration
Command History
ModificationRelease
This command was introduced.Cisco IOS 15.0(2)EX
Usage Guidelines
In MST mode, a switch stack supports up to 65 MST instances. The number of VLANs that can be mapped
to a particular MST instance is unlimited.
For two or more switches to be in the same MST region, they must have the same VLAN mapping, the same
configuration name, and the same configuration revision number.
When you map VLANs to an MST instance, the mapping is incremental, and VLANs specified in the command
are added to or removed from the VLANs that were previously mapped. To specify a range, use a hyphen;
for example, instance 1 vlan 1-63 maps VLANs 1 to 63 to MST instance 1. To specify a series, use a comma;
for example, instance 1 vlan 10, 20, 30 maps VLANs 10, 20, and 30 to MST instance 1.
All VLANs that are not explicitly mapped to an MST instance are mapped to the common and internal spanning
tree (CIST) instance (instance 0) and cannot be unmapped from the CIST by using the no form of this command.
Changing an MST-configuration mode parameter can cause connectivity loss. To reduce service disruptions,
when you enter MST-configuration mode, make changes to a copy of the current MST configuration. When
you have finished editing the configuration, you can apply all the changes at once by using the exit keyword,
or you can exit the mode without committing any change to the configuration by using the abort keyword.
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
92 OL-29043 -01
Layer 2 Commands
spanning-tree mst configuration

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