Cisco Systems WS-C2948G-GE-TX

The Cisco Catalyst 2948G-GE-TX Gigabit Ethernet Switch is a fixed-configuration switch that provides Gigabit Ethernet connectivity for small and medium-sized networks. The Cisco Catalyst 2948G-GE-TX switch enhances network performance and productivity with the highest 10/100/1000-Mbps port density in a 1 rack unit (RU) form factor in the networking industry. The Cisco Catalyst 2948G-GE-TX is also an affordable solution for delivering gigabit-speed connectivity to the desktop over Category 5 copper cabling.
The Cisco Catalyst 2948G-GE-TX has autosensing 48 10/100/1000BASE-T ports and 4 small form-factor pluggable (SFP) ports, providing a total of 52 Gigabit Ethernet ports. The 4 SFP ports are wire-speed, and the 48 10/100/1000BASE-T ports can burst to Gigabit Ethernet line rate and share 12 Gbps of capacity (or 6 Gbps full-duplex) into the switching fabric. All ports can use Cisco Gigabit EtherChannel or IEEE 802.3ad for high-speed interconnection applications. All ports use the standard IEEE 802.3x flow control (PAUSE frame) mechanism to control Gigabit Ethernet host traffic. The Cisco Catalyst 2948G-GE-TX uses the same feature-rich Cisco Catalyst OS software as the Cisco Catalyst 2948G, the Cisco Catalyst 2980G-A, and Cisco Catalyst 4000 Series switches.

• Dynamic Host Configuration Protocol (DHCP) autoconfiguration of multiple switches through a boot server eases switch deployment
• Autosensing on each non-SFP port detects the speed of the attached device and automatically configures the port
• Auto negotiating on all ports automatically selects half or full-duplex transmission mode to optimize bandwidth
• Dynamic Trunking Protocol (DTP) enables dynamic trunk configuration across all switch ports
• Port Aggregation Protocol (PAgP) automates the creation of Cisco Fast EtherChannel groups or Gigabit EtherChannel groups
• Link Aggregation Control Protocol (LACP) allows the creation of Ethernet channeling with devices that conform to IEEE 802.3ad
• DHCP Relay allows a DHCP relay agent to broadcast DHCP requests to the network DHCP server
• IEEE 802.3z-compliant 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, 1000BASE-T
• To help ensure that the switch can be quickly connected to the network and can pass traffic with minimal user intervention