Product specifications

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Investment Protection—Switches Designed to Outlive Your Deployment Horizon
In contrast to low-end unmanaged switches that often have high failure rates and do not stay current with new technologies, the Cisco
Catalyst 2940 Series switches are built to last. A durable all-metal shell, an exceptionally high mean time between failure (MTBF) of
over 70 years, and a Limited Lifetime Warranty, help ensure that this switch will outlast your anticipated deployment timeframe.
Finally, the switches provide a smooth migration to Gigabit Ethernet uplinks for those customers who have not yet upgraded their Fast
Ethernet uplinks. The 2940-8TT provides an autosensing 10/100/1000BASE-T port for use as a Fast Ethernet or Gigabit Ethernet uplink
over copper. Meanwhile, the 2940-8TF provides fiber optic uplink connectivity via an integrated 100BASE-FX Fast Ethernet port, as
well as a 1000BASE-X Gigabit SFP slot that supports Cisco's 1000BASE-SX, 1000BASE-LX, 1000BASE-ZX, 1000BASE CWDM,
and 1000BASE-T SFPs.
Rich IOS Functionality
The Cisco Catalyst 2940 Series supports a Cisco IOS Software feature set that is nearly identical to that offered in the Standard Image
Cisco Catalyst 2950 Series switches. This functionality provides:

Support for network edge security to prevent unauthorized users

Quality-of-service capabilities for basic data, video, and voice applications

High-availability features to ensure user productivity

Full network management support
PRODUCT SPECIFICATIONS
Table 1. Product Features and Benefits
Feature Benefit
Ease of Use and Ease of Deployment

Autoconfiguration

Autosensing

Autonegotiating

Dynamic Trunking Protocol
(DTP)

Port Aggregation Protocol
(PAgP) and Link Aggregation
Control Protocol (LACP)

DHCP Relay

Default configuration

Auto-MDIX (media-dependent
interface crossed-over)

Express Setup

Switch automatically downloads configuration file using Dynamic Host Configuration Protocol (DHCP).

Each non-SFP port detects the speed of the attached device and automatically configures the port for 10-,
100-, or 1000-Mbps operation, easing switch deployment in mixed 10, 100, and 1000BASE-T environments.

Each non-SFP port automatically selects half- or full-duplex transmission mode to optimize bandwidth.

Switch ports automatically configure as trunks if connected to a trunk port on another switch or router.

Switch ports automatically configure as Cisco Fast EtherChannel
®
groups or IEEE 802.3ad groups when there are
multiple links to another switch, router, or server.

Allows a DHCP relay agent to broadcast DHCP requests to the network DHCP server.

The switch can be connected to the network and can forward traffic with no configuration.

All ports automatically adjust transmit and receive pairs depending on cable type (cross-over or straight-through)
connected.

Web browser utility allows simple switch set up so that even novices can perform a basic configuration.
Availability/Scalability