Gigabit Ethernet Modules:
48-Port 1000-BASE-LX Gigabit Ethernet Line Card (WS-X4448-GB-LX)
The Cisco Catalyst 48-port 1000BASE-LX Gigabit Ethernet line card provides 48 ports of high-performance 1000BASE-LX Gigabit Ethernet connectivity allowing service providers to run point-to-point Gigabit Ethernet links over single-mode fiber within the access/distribution layer of their metropolitan Ethernet network. This line card leverages, and includes, 48 1000BASE-LX small form-factor pluggable (SFP) optics for a high density solution.
The 48 ports can burst up to Gigabit Ethernet line rate and share 12 Gbps of capacity (6 Gbps full-duplex) into the switching fabric. The amount of oversubscription can be controlled by controlling the number of ports enabled. All ports use the standard IEEE 802.1x flow control (PAUSE frame) mechanism to control Gigabit Ethernet host traffic.
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