Transceiver-Based Gigabit Ethernet Cards
2-12 SmartEdge 1200 Router Hardware Guide
Gigabit Ethernet 1020
The Gigabit Ethernet 1020 (GE1020) cards are designed for traffic management, with the second
generation of the PPAs, each of which supports 1 GB of memory and can process data internally to match
the speed of the ports. Two versions of the GE1020 card provide 10 or 20 optical ports, each of which runs
at 1 Gbps. Any of the following types of SFP optical transceivers are supported on any of the ports:
• 1000Base-SX—Short reach
• 1000Base-LX—Long reach
• 1000Base-ZX—Extended reach
• 1000Base-T—Copper
• 1000Base-CWDM—CWDM
• 1000Base-DWDM—DWDM
Table 2-8 GE3 Card Base-CWDM and Base-DWDM Specifications
Specification CWDM DWDM
Number of ports
1
1. Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
44
Speed 1 Gbps 1 Gbps
Protection None None
Interface 1000Base-CWDMnnnn
2
2. Nominal wavelength.
1000Base-DWDMITUnn
3
3. The range of International Telecommunications Union (ITU) channels is 17 to 60.
Line code 8B/10B 8B/10B
Negotiate flow control
4
4. The extent of the support for flow control depends on the release of the SmartEdge OS.
Yes Yes
Transceiver type SFP SFP
Compliance IEEE 802.3, 802.3z IEEE 802.3, 802.3z
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.
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