Cisco Catalyst 2960 Series User Manual

For information about configuring the switch to boot from a USB flash drive, refer to the Catalyst 2960-X
Switch System Management Configuration Guide.
For information about reading, writing, erasing, and copying files to or from the flash device, refer to the
Catalyst 2960-X Switch Managing Cisco IOS Image Files Configuration Guide.
Interface Connections
Devices within a single VLAN can communicate directly through any switch. Ports in different VLANs cannot
exchange data without going through a routing device.
In the following configuration example, when Host A in VLAN 20 sends data to Host B in VLAN 30, the
data must go from Host A to the switch, to the router, back to the switch, and then to Host B.
Figure 1: Connecting VLANs with the Switch
With a standard Layer 2 switch, ports in different VLANs have to exchange information through a router.
Interface Configuration Mode
The switch supports these interface types:
• Physical ports—switch ports and routed ports
• VLANs—switch virtual interfaces
• Port channels—EtherChannel interfaces
You can also configure a range of interfaces.
To configure a physical interface (port), specify the interface type, module number, and switch port number,
and enter interface configuration mode.
• Type—Gigabit Ethernet (gigabitethernet or gi) for 10/100/1000 Mb/s Ethernet ports, or small form-factor
pluggable (SFP) module Gigabit Ethernet interfaces (gigabitethernet or gi).
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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Information About Configuring Interface Characteristics

Cisco Catalyst 2960 Series Specifications

General

Layer	Layer 2
Power over Ethernet (PoE)	Available on some models
RAM	128 MB
Flash Memory	32 MB
MAC Address Table Size	8000
Operating Temperature	0°C to 45°C (32 to 113°F)
Ports	24 or 48 x 10/100/1000