Transceiver-Based Gigabit Ethernet Cards
Traffic Card Descriptions 2-11
Gigabit Ethernet 3
The Gigabit Ethernet 3 (GE3) card is the third version of the 4-port Gigabit Ethernet card. It is designed for
traffic management, with the second generation of the PPAs, each of which supports 1 GB of memory and
can process data internally at a much higher rate than the PPAs on the first and second versions of the
Gigabit Ethernet card.
Any combination of the following types of SFP optical and copper transceivers are supported on any port
on the card:
• 1000Base-SX—Short reach
• 1000Base-LX—Long reach
• 1000Base-ZX—Extended reach
• 1000Base-T—Copper
• 1000Base-CWDM—Coarse wavelength-division multiplexing (CWDM)
• 1000Base-DWDM—Dense wavelength-division multiplexing (DWDM)
Table 2-7 and Table 2-8 list the GE3 card specifications for the various SFP transceivers.
Caution Risk of data loss. You can corrupt the system if you attempt to install transceivers (GBICs,
SFPs, or XFPs) that are not purchased from Redback because these items have not been tested
with the SmartEdge router. To reduce the risk, install only the transceivers purchased from
Redback.
Table 2-7 GE3 Card Base-SX, Base-LX, Base-ZX, and Base-T Specifications
Specification SX LX ZX TX
Number of ports
1
1. Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
4444
Speed 1 Gbps 1 Gbps 1 Gbps 1 Gbps
Protection None None None None
Interface 1000Base-SX 1000Base-LX 1000Base-ZX 1000Base-T
Line code 8B/10B 8B/10B 8B/10B PAM-5
Negotiate flow control
2
2. The extent of the support for flow control depends on the release of the SmartEdge OS.
Yes Yes Yes Yes
Transceiver type SFP SFP SFP SFP
Compliance IEEE 802.3,
802.3z
IEEE 802.3,
802.3z
IEEE 802.3,
802.3z
IEEE 802.3, 802.3ab,
802.3z
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