Card Descriptions
Table 138 20-Port Gigabit Ethernet Card SFP Specifications (1000Base-SX, LX, ZX, and TX)
Specification SX LX ZX TX
(1) (2)
Interface 1000Base-SX 1000Base-LX 1000Base-ZX 1000Base-TX
Line code 8B/10B 8B/10B 8B/10B PAM-5
Flow control negotiation
(4)
Yes Yes Yes Yes
Transceiver type SFP SFP SFP SFP
Compliance IEEE 802.3, 802.3z IEEE 802.3, 802.3z
–
IEEE 802.3, 802.3ab,
802.3z
(1) When this 1000Base-TX SFP transceiver is used in the 20x1GE card, a maximum of 10 transceivers can be
inserted into the card. These transceivers are inserted into the card such that only one port from each of the following
slot pairs is populated: 1-11, 2-12, 3-13, 4-14, 5-15, 6-16, 7-17, 8-18, 9-19, and 10-20. If both ports in a slot pair are
populated, the SFP cages of the line card can be damaged.
(2) Because the TX SFP is larger than a standard SFP, you cannot insert two TX SFPs side by side on the 20-port
GE line card.
(3) Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
(4) The extent of the support for flow control depends on the release of the SmartEdge OS.
Table 139 20-Port Gigabit Ethernet Card Specifications (1000Base-CWDM and DWDM)
Specification
(1)
CWDM DWDM
Number of ports
(2)
20 20
Speed 1 Gbps 1 Gbps
Protection None None
Interface 1000Base-CWDMnnnn
(3)
1000Base-DWDMITUnn
(4)
Line code 8B/10B 8B/10B
Flow control negotiation
(5)
Yes Yes
Transceiver type SFP SFP
Compliance ITU G.694.2 ITU G.694.1
(1) Data for coarse wavelength-division multiplexing (CWDM) and dense wavelength-division multiplexing (DWDM)
transceivers can vary slightly, depending on the manufacturer.
(2) Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
(3) CWDM nominal wavelengths are 1471, 1491, 1511, 1531, 1551, 1571, 1591, and 1611; specified in ITU G.694.2.
(4) The range of DWDM ITU channels is 17 to 60; see the ITU DWDM Transmit Frequencies and Wavelengths” table
for the frequency and wavelength of each ITU channel; specified in ITU G.694.1.
(5) The extent of the support for flow control depends on the release of the SmartEdge OS.
15127/153 30-CRA 119 1170/1 Uen A | 2010-04-09
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