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Digital Optical Monitoring 
(DOM) supportSupported on some GBIC transceivers. 
NoteRefer to your software release notes for specific information on 
which GBIC transceivers support DOM and the software 
release required for support.
Module front panel LEDsSTATUS
Green—All diagnostics pass; the module is operational.
Orange—The module is booting or running diagnostics; an 
overtemperature condition has occurred.
LINK
Green—The port is active (the link is connected and operational).
Flashing orange—The port failed diagnostics and is disabled.
Orange—The port is disabled.
Red—The module is resetting; an overtemperature condition has 
occurred. 
NoteIf the module fails to download code and configuration 
information successfully during the initial reset, the LED stays 
red; the module does not come online.
Off—The port is not active or the link is not connected.
Table 2-52 WS-X6816-GBIC Ethernet Module Features (continued)
Feature Description 
						

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Table 2-53 WS-X6816-GBIC Physical and Environmental Specifications 
Item Specification
Dimensions (H x W x D) 1.2 x 14.4 x 16 in. (3.0 x 35.6 x 40.6 cm). Occupies one slot in the chassis.
Weight Base module—9.2 lb (4.2 kg)
Power and heat numbers
Base module + DFC daughter card (WS-F6K-DFC3A)
 –Module current—5.94 A
 –Module power—249.48 W
 –AC-input power—311.85 W
 –AC heat dissipation—1064.97 BTU/hour
 –DC-input power—335.32 W
 –DC heat dissipation—1145.13 BTU/hour
Base module + DFC daughter card (WS-F6K-DFC3B)
 –Module current—5.51 A
 –Module power—231.42 W
 –AC-input power—289.28 W
 –AC heat dissipation—987.87 BTU/hour
 –DC-input power—311.05 W
 –DC heat dissipation—1062.23 BTU/hour
Base module + DFC daughter card (WS-F6K-DFC3BXL)
 –Module current—6.22 A
 –Module power—261.24 W
 –AC-input power—326.55 W
 –AC heat dissipation—1115.17 BTU/hour
 –DC-input power—351.13 W
 –DC heat dissipation—1199.11 BTU/hour
Environment11.2 lb (5.08 kg)
Operating temperature
Certified for operation: 32° to 104°F (0° to 40°C)
Designed and tested for operation: 32° to 130°F (0° to 55°C)
Humidity (RH) ambient 
(noncondensing)10 to 90%
Operating altitude
Certified for operation: 0 to 6500 ft (0 to 2000 m)
Designed and tested for operation: –200 to 10,000 ft (–60 to 3000 m) 
						

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  10-Gigabit Ethernet Modules
10-Gigabit Ethernet Modules
This section describes the following 10-Gigabit Ethernet modules:
WS-X6704-10GE Ethernet Module, page 2-93
WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet Modules, page 2-98
WS-X6716-10GE and WS-X6816-10G-2T/-2TXL Ethernet Modules, page 2-102
WS-X6716-10T and WS-X6816-10T-2T/-2TXL Ethernet Modules, page 2-108
NoteAll of the 10-Gigabit Ethernet modules are hot swappable.
WS-X6704-10GE Ethernet Module
The WS-X6704-10GE Ethernet module (Figure 2-25) provides 4 10-Gbps full- or half-duplex ports. 
Table 2-54 lists the module features, and Table 2-55 lists the module physical and environmental 
specifications. 
Figure 2-25 WS-X6704-10GE Ethernet Module Front Panel
Table 2-54 WS-X6704-10GE Ethernet Module Features 
Feature Description
Ports per module
4 ports. Ports are numbered from 1 (left) to 4 (right).
4 port groups
Port ranges per port group: 1 port in each group
Port connector type SC or InfiniBand 4X depending on the type of XENPAK transceiver 
installed in the module.
Cabling distance Depends on the XENPAK transceiver installed in the module port. 
Refer to Appendix B for supported XENPAK transceiver types and 
cabling distances.
Buffer size 16 MB
QoS
Number of egress queues: 8
Number of ingress queues: 1 (8 if DFC3x is present)
Number of thresholds per egress queue: 8
Number of thresholds per ingress queue: 8
Maximum frame size Up to 9216 bytes
Module oversubscription rate Approximately 1:1
WS-X6704-10GE
STATUS
LINK 1
LINK 2
LINK 3
LINK 4PORT 1
TX RXPORT 2
TX RXPORT 3
TX RXPORT 4
TX RX
4 PORT 10 GIGABIT ETHERNET99885 
						

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Supervisor engine support Supported on the following supervisor engines:
Supervisor Engine 720
Supervisor Engine 720-10GE
Supervisor Engine 2T (module must be equipped with a CFC 
daughter card or either a DFC4-A or DFC4-AXL daughter card)
Software support
With Supervisor Engine 720—12.2(17a)SX
With Supervisor Engine 720 and DFC3C or 
DFC3CXL—12.2(33)SXH
With Supervisor Engine 720-10GE—12.2(33)SXH
With Supervisor Engine 2T (module equipped with either CFC, 
DFC4-A, or DFC4-AXL daughter card)—12.2(50)SY
Queues per port
With CFC daughter card:
 –Tx—1p7q8t
 –Rx—1q8t
With DFC daughter card:
 –Tx—1p7q8t
 –Rx—8q8t
Chassis/slot restrictions
Not supported in the Catalyst 6503 chassis. 
Supported only in slots 9–13 in the Catalyst 6513 chassis. The 
module does not power up if it is installed in slots 1–8.
Switch fabric connection
Dual switch-fabric connections:
 –Fabric channel 1—Ports 3 and 4
 –Fabric channel 2—Ports 1 and 2
Fabric channel speed 20 Gb/sec
Module upgrades available
PoE support Not supported.
Distributed forwarding 
supportShips with the WS-F6700-CFC daughter card factory-installed. Can be 
upgraded in the field with a DFC daughter card (WS-F6700-DFC3A, 
WS-F6700-DFC3B, WS-F6700-DFC3B, WS-F6700-DFC3C, 
WS-F6700-DFC3CXL, WS-)F6K-DFC4-A, or WS-F6K-DFC4-AXL.
Pluggable transceivers 
supportXENPAK transceivers are supported. Refer to your software release 
notes to determine which XENPAK transceivers are supported. See the 
“10-GB Transceivers” section on page B-8 in Appendix B for 
additional information on the XENPAK transceivers.
Table 2-54 WS-X6704-10GE Ethernet Module Features (continued)
Feature Description 
						

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Digital Optical Monitoring 
(DOM) supportSupported on some XENPAK transceivers. 
NoteRefer to your software release notes for specific information on 
which XENPAK transceivers support DOM and the software 
release required for support.
Module front panel LEDsSTATUS
Green—All diagnostics pass; the module is operational.
Orange—The module is booting or running diagnostics; an 
overtemperature condition has occurred.
LINK
Green—The port is active (the link is connected and operational).
Flashing orange—The port failed diagnostics and is disabled.
Orange—The port is disabled.
Red—The module is resetting; an overtemperature condition has 
occurred. 
NoteIf the module fails to download code and configuration 
information successfully during the initial reset, the LED stays 
red; the module does not come online.
Off—The port is not active or the link is not connected.
Table 2-54 WS-X6704-10GE Ethernet Module Features (continued)
Feature Description 
						

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Table 2-55 WS-X6704-10GE Ethernet Module Physical and Environmental Specifications 
Item Specification
Dimensions 1.2 x 14.4 x 16 in. (3.0 x 35.6 x 40.6 cm). Occupies one slot in the 
chassis.
Weight Base module + CFC daughter card (WS-F6700-CFC)—9.0 lb (4.08 kg)
Power and heat numbers
WS-X6704-10GE (base module + CFC daughter card)
 –Module current—7.03 A
 –Module power—295.26 W
 –AC-input power—369.08 W
 –AC heat dissipation—1260.39 BTU/hour
 –DC-input power—396.85 W
 –DC heat dissipation—1355.26 BTU/hour
WS-X6704-10GE (base module + DFC3A daughter card)
 –Module current—9.28 A
 –Module power—389.76 W
 –AC-input power—487.20 W
 –AC heat dissipation—1663.79 BTU/hour
 –DC-input power—523.87 W
 –DC heat dissipation—1789.02 BTU/hour
WS-X6704-10GE (base module + DFC3B daughter card)
 –Module current—8.98 A
 –Module power—377.16 W
 –AC-input power—471.45 W
 –AC heat dissipation—1610.00 BTU/hour
 –DC-input power—506.94 W
 –DC heat dissipation—1731.18 BTU/hour
WS-X6704-10GE (base module + DFC3BXL daughter card)
 –Module current—9.58 A
 –Module power—402.36 W
 –AC-input power—502.95 W
 –AC heat dissipation—1717.57 BTU/hour
 –DC-input power—540.81 W
 –DC heat dissipation—1846.85 BTU/hour 
						

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Power and heat numbers
(continued)WS-X6704-10GE (base module + DFC3C daughter card)
 –Module current—7.93 A
 –Module power—333.06 W
 –AC-input power—416.33 W
 –AC heat dissipation—1421.75 BTU/hour
 –DC-input power—447.66 W
 –DC heat dissipation—1528.76 BTU/hour
WS-X6704-10GE (base module + DFC3CXL daughter card)
 –Module current—8.63 A
 –Module power—362.46 W
 –AC-input power—453.08 W
 –AC heat dissipation—1547.25 BTU/hour
 –DC-input power—487.18 W
 –DC heat dissipation—1663.71 BTU/hour
Environment
Operating temperature
Certified for operation: 32° to 104°F (0° to 40°C)
Designed and tested for operation: 32° to 130°F (0° to 55°C)
Humidity (RH) ambient 
(noncondensing)10 to 90%
Operating altitude
Certified for operation: 0 to 6500 ft (0 to 2000 m)
Designed and tested for operation: –200 to 10,000 ft (–60 to 
3000 m)
Table 2-55 WS-X6704-10GE Ethernet Module Physical and Environmental Specifications (continued)
Item Specification 
						

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WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet Modules
The WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet module (Figure 2-26) provides 8 10-Gbps 
full- or half-duplex ports. Table 2-54 lists the module features, and Table 2-55 lists the module physical 
and environmental specifications. 
Figure 2-26 WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet Module Front Panel
NoteBoth of the modules (WS-X6708-10G-3C and WS-X6708-10G-3CXL) are identified on the faceplate as 
WS-X6708-10GE.
Table 2-56 WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet Module Features 
Feature Description
Ports per module
8 ports. Ports are numbered from 1 (left) to 8 (right).
1 port group
Port ranges per port group: 1–8
Port connector type SC or CX4 depending on the type of X2 transceiver installed in the 
module port.
Cabling distance Depends on the X2 transceiver installed in the module port. Refer to 
Appendix B for supported X2 transceiver types and cabling distances.
Buffer size 200 MB per port
QoS
Number of egress queues: 8
Number of ingress queues: 8
Number of thresholds per egress queue: 4
Number of thresholds per ingress queue: 4
Maximum frame size Up to 9216 bytes
Module oversubscription rate 2:1
Supervisor engine support Supported on the following supervisor engines:
Supervisor Engine 720
Supervisor Engine 720-10GE
NoteCheck your release notes for specific information on the 
software release versions required to support the supervisor 
engines.
Software support
With Supervisor Engine 720—12.2(18)SXF5
With Supervisor Engine 720-10GE—12.2(33)SXH
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Queues per portTx—1p7q4t
Rx—8q4t
Chassis/slot restrictions
Not supported in the Catalyst 6503 chassis. 
Supported only in slots 9–13 in the Catalyst 6513 chassis. The 
module does not power up if it is installed in slots 1–8.
When the WS-X6708-10G module is installed in a Catalyst  6500-E 
series chassis or a Catalyst 6509-NEB-A chassis, the configuration 
is NEBS 3 compliant (chassis supports operating temperatures up 
to 55°C). 
When the WS-X6708-10G module is installed in a Catalyst 6500 
non-E series chassis that is equipped with a fan tray 2 and a 
2500 W or larger power supply, the configuration is not NEBS 3 
compliant (chassis supports operating temperatures up to 40°C 
only).
Support for the Catalyst 6509-NEB-A chassis requires two 
FAN-MOD-09 fan trays.
Fabric connection
Dual switch-fabric connections:
 –Fabric channel 1: Ports 2, 3, 6, 8
 –Fabric channel 2: Ports 1, 4, 5, 7
Fabric channel speed 20 Gb/sec
Module upgrades available
PoE support Not supported.
Distributed forwarding 
support
WS-X6708-10G-3C comes factory-equipped with a DFC3C 
daughter card.
WS-X6708-10G-3CXL comes factory-equipped with a DFC3CXL 
daughter card.
Pluggable transceivers 
supportX2 transceivers are supported. Not all types of X2 transceivers may be 
supported. Refer to your software release notes to determine which X2 
transceivers are currently supported. See the “10-GB Transceivers” 
section on page B-8 in Appendix B for additional information on the 
X2 transceivers.
NoteThe WS-6708-10GE does not support X2 transceivers shipped 
prior to the release of the WS-X6708-10GE with Cisco IOS 
Release 12.2(18)SXF5. The unsupported X2 transceivers are 
labeled with a number that ends with -01. This restriction does 
not apply to the X2-10GB-LRM transceiver.
Table 2-56 WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet Module Features (continued)
Feature Description 
						

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Digital Optical Monitoring 
(DOM) supportSupported on some X2 transceivers.
NoteRefer to your software release notes for specific information on 
which X2 transceivers support DOM and the software release 
required for support.
Module front panel LEDsSTATUS
Green—All diagnostics pass; the module is operational.
Orange—The module is booting or running diagnostics; an 
overtemperature condition has occurred.
LINK
Green—The port is active (the link is connected and operational).
Flashing orange—The port failed diagnostics and is disabled.
Orange—The port is disabled.
Red—The module is resetting; an overtemperature condition has 
occurred. 
NoteIf the module fails to download code and configuration 
information successfully during the initial reset, the LED stays 
red; the module does not come online.
Off—The port is not active or the link is not connected.
Table 2-56 WS-X6708-10G-3C and WS-X6708-10G-3CXL Ethernet Module Features (continued)
Feature Description