Cisco Catalyst 2960-X Configuration Guide

•
System Jumbo MTU--This value applies to switched packets on the Gigabit Ethernet and 10-Gigabit
Ethernet ports of the switch. Use the system mtu jumbo bytes global configuration command to specify
the system jumbo MTU value.
•
System Routing MTU--This value applies only to routed packets on all routed ports of the switch or
switch stack. Use the system mtu routing global configuration command to specify the system routing
MTU value.
System MTU Guidelines
When configuring the system MTU values, follow these guidelines:
•
The switch does not support the MTU on a per-interface basis.
•
If you enter the system mtu bytes global configuration command, the command does not take effect on
the switch. This command only affects the system MTU size on Fast Ethernet switch ports.
•
The system mtu, system mtu jumbo, and system mtu routing global configuration commands do not
take effect in these cases:
◦
When you enter the system mtu command on a switch without Fast Ethernet ports
◦
When you enter the system mtu routing command on a switch on which only Layer 2 ports are
configured
This command is not supported on switches running the LAN base feature set.Note
•
When you use the system mtu bytes or system mtu jumbo bytes command to change the system MTU
or system jumbo MTU size, you must reset the switch before the new configuration takes effect. The
system mtu routing command does not require a switch reset to take effect.
The system MTU setting is saved in the switch environmental variable in NVRAM and becomes effective
when the switch reloads. Unlike the system MTU routing configuration, the MTU settings you enter with the
system mtu and system mtu jumbo commands are not saved in the switch Cisco IOS configuration file, even
if you enter the copy running-config startup-config privileged EXEC command. Therefore, if you use TFTP
to configure a new switch by using a backup configuration file and want the system MTU to be other than
the default, you must explicitly configure the system mtu and system mtu jumbo settings on the new switch
and then reload the switch.
How to Configure MTU
Configuring the System MTU
Beginning in privileged EXEC mode, follow these steps to change the MTU size for switched and routed
packets:
Catalyst 2960-XR Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX1
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Configuring System MTU
System MTU Guidelines

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