Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
system mtu
system mtu
Use the system mtu global configuration command to set the maximum packet size or maximum
transmission unit (MTU) size for the switch. Use the no form of this command to restore the global MTU
value to its original default value.
system mtu bytes
no system mtu
Syntax Description
Defaults The default MTU size is 1500 bytes.
Command Modes Global configuration
Command History
Usage Guidelines This table lists the valid system MTU values for the switches:
The size of frames that can be received by the switch CPU is limited to 1500 bytes, no matter what value
was entered with the system mtu command. Although frames that are forwarded or routed typically are
not received by the CPU, in some cases packets are sent to the CPU, such as traffic sent to control traffic,
Simple Network Management Protocol (SNMP), Telnet, or routing protocols.
If you enter a value that is outside of the range for the switch, the value is not accepted.
Note You cannot set the MTU on a per-interface basis.
bytes Packet size in bytes. For valid values, see the “Usage Guidelines” section.
Release Modification
12.1(6)EA2 This command was introduced.
Switch MTU size
Catalyst 2950G-12-EI
Catalyst 2950G-24-EI
Catalyst 2950G-24-EI-DC
Catalyst 2950G-48-EI
Catalyst 2950 Long-Reach Ethernet (LRE)
switches
Catalyst 2955 switches
1500 to 1530 bytes
Other non-LRE Catalyst 2950 switches 1500 bytes

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz