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  1-Gigabit Ethernet Modules
Table 2-49 WS-X6724-SFP and WS-X6824-SFP-2T/-2TXL Ethernet Modules 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—8.8 lb (4.0 kg) 
Base module + DFC daughter card—9.4 lb (4.3 kg)
Power and heat numbers
Base module + CFC daughter card (WS-F6700-CFC)
 –Module current—2.98 A
 –Module power—125.16 W
 –AC-input power—156.45 W
 –AC heat dissipation—534.28 BTU/hour
 –DC-input power—168.23 W
 –DC heat dissipation—574.49 BTU/hour
Base module + DFC3A daughter card (WS-F6700-DFC3A)
 –Module current—5.23 A
 –Module power—219.66 W
 –AC-input power—274.58 W
 –AC heat dissipation—937.67 BTU/hour
 –DC-input power—295.24 W
 –DC heat dissipation—1008.25 BTU/hour
Base module + DFC3B daughter card (WS-F6700-DFC3B)
 –Module current—4.93 A
 –Module power—207.06 W
 –AC-input power—258.83 W
 –AC heat dissipation—883.89 BTU/hour
 –DC-input power—278.31 W
 –DC heat dissipation—950.42 BTU/hour 
						

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Power and heat numbers
(continued)Base module + DFC3BXL daughter card (WS-F6700-DFC3BXL)
 –Module current—5.53 A
 –Module power—232.26 W
 –AC-input power—290.33 W
 –AC heat dissipation—991.46 BTU/hour
 –DC-input power—312.18 W
 –DC heat dissipation—1066.09 BTU/hour
Base module + DFC3C daughter card (WS-F6700-DFC3C)
 –Module current—3.88 A
 –Module power—162.96 W
 –AC-input power—203.70 W
 –AC heat dissipation—695.64 BTU/hour
 –DC-input power—219.03 W
 –DC heat dissipation—748.00 BTU/hour
Base module + DFC3CXL daughter card (WS-F6700-DFC3CXL)
 –Module current—4.58 A
 –Module power—192.36 W
 –AC-input power—240.45 W
 –AC heat dissipation—821.14 BTU/hour
 –DC-input power—258.55 W
 –DC heat dissipation—882.94 BTU/hour
WS-X6824-SFP-2T + DFC4-A daughter card
 –Module current—4.87 A
 –Module power—204.66 W
 –AC-input power—255.68 W
 –AC heat dissipation—873.13 BTU/hour
 –DC-input power—274.92 W
 –DC heat dissipation—938.85 BTU/hour
WS-X6824-SFP-2TXL + DFC4-AXL daughter card
 –Module current—4.99 A
 –Module power—209.66 W
 –AC-input power—261.98 W
 –AC heat dissipation— 894.64BTU/hour
 –DC-input power—281.69 W
 –DC heat dissipation—961.98 BTU/hour
Table 2-49 WS-X6724-SFP and WS-X6824-SFP-2T/-2TXL Ethernet Modules Physical and Environmental Specifications 
Item Specification 
						

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WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL
The WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Ethernet modules (Figure 2-23) provide 48 1-Gbps 
full- or half-duplex ports. Table 2-50 lists the module features, and Table 2-50 lists the module physical 
and environmental specifications. 
NoteA sticker is placed on the module faceplate identifying it as either a WS-X6848-SFP-2T or 
WS-X6848-SFP-2TXL depending on whether a WS-F6K-DFC4-A or WS-F6K-DFC4-AXL daughter 
card is installed on the module.
Figure 2-23 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Switching Module Front Panel
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 2-49 WS-X6724-SFP and WS-X6824-SFP-2T/-2TXL Ethernet Modules Physical and Environmental Specifications 
Item Specification
Table 2-50 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Features 
Feature Description
Ports per module
48 ports. Ports are numbered (left to right):
 –Top row, odd numbered ports 1–47.
 –Bottom row, even numbered ports 2–48.
4 port groups
Port ranges per port group:
 –1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23
 –2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
 –25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47
 –26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48
Port connector type LC (optical) or RJ-45 (copper) depending on the type of SFP 
transceiver installed in the port.
STATUS
WS-X6748-SFP
48 PORT GIGABIT ETHERNET-SFP
144612 
						

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Cabling distance Depends on the SFP transceiver installed in the module port. For SFP 
transceivers currently supported, refer to the compatibility matrices at 
the following URL:
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_
device_support_tables_list.html
For cabling distance information, refer to the transceiver installation 
guides at the following URL:
http://www.cisco.com/en/US/products/hw/modules/ps5455/prod_insta
llation_guides_list.html
Buffer size Rx—166 kB per port
Tx—1.17 MB per port
Maximum frame size Up to 9216 bytes per frame
Module oversubscription rate 1.2:1
Supervisor engine support
WS-X6748-SFP
 –Supervisor Engine 720
 –Supervisor Engine 720-10GE
 –Supervisor Engine 2T (the module must be equipped with 
either a CFC daughter card, or a DFC4-A or DFC4-AXL 
daughter card.
WS-X6848-SFP-2T/-2TXL
 –Supervisor Engine 2T-10GE
NoteWS-X6748-SFP modules that are upgraded with DFC4-A or 
DFC4-AXL daughter cards are supported only on the 
Supervisor Engine 2T-10GE
Software support
WS-X6748-SFP
 –With Supervisor Engine 720—12.2(17d)SXB
 –With Supervisor Engine 720 and DFC3C or 
DFC3CXL—12.2(33)SXH
 –With Supervisor Engine 720-10GE—12.2(33)SXH
WS-X6848-SFP-2T/-2TXL
 –With Supervisor Engine 2T-10GE—12.2(50)SY
Queues per port
With CFC daughter card:
 –Tx—1p3q8t
 –Rx—1q8t
With DFC daughter card:
 –Tx—1p3q8t
 –Rx—2q8t
Table 2-50 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Features (continued)
Feature Description 
						

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Chassis/slot restrictionsThe module is not supported in the Catalyst 6503 switch chassis. 
The WS-X6748-SFP module can occupy any slot in any other 
Catalyst 6500 or Catalyst 6500-E chassis with the exception of the 
Catalyst 6513 chassis where the module must be installed only in 
slots 9–13. The module will not power up if it is installed in 
slots 1–8.
The WS-X6848-SFP-2T/-2TXL operates only in a Catalyst 6500 
E-series chassis equipped with a Supervisor Engine 2T-10GE
Requires that modules be installed in adjacent slots or, if either 
adjacent slot is unused, you must install a switching-module filler 
plate (Cisco part numbers WS-X6K-SLOT-CVR-E or 
SLOTBLANK-09) rather than a blank slot cover 
(WS-X6K-SLOT-CVR) to maintain an adequate air flow through 
the chassis.
Fabric connection
Dual switch-fabric connections:
 –Fabric channel 1—Ports 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 
24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48
 –Fabric channel 2—Ports 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 
25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47
Table 2-50 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Features (continued)
Feature Description 
						

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Fabric channel speed 20 Gb/sec (dual channel, 40 Gb/sec total)
Module upgrades available
PoE support Not supported.
Distributed forwarding 
support
The WS-X6748-SFP module ships with the WS-F6700-CFC 
daughter card factory-installed. The module can be upgraded in the 
field to support dCEF with the installation of a WS-F6700-DFC3A, 
WS-F6700-DFC3B, WS-F6700-DFC3BXL, WS-F6700-DFC3C, 
WS-F6700-DFC3CXL, WS-F6K-DFC4-A, or the 
WS-F6K-DFC4-AXL daughter card.
The WS-X6848-SFP-2T module ships with the DFC4-A installed; 
the WS-X6848-TX-2TXL ships with the DFC-4AXL daughter 
card installed.
NoteRefer to the Catalyst 6500 Series DFC3A, DFC3B, and 
DFC3BXL Installation Note or the Catalyst 6500 Series 
Distributed Forwarding Card 4 for WS-X68xx Modules 
Installation Note for additional information and field upgrade 
procedures.
Pluggable transceivers 
supportSFP transceivers are supported. Refer to your software release notes to 
determine which SFP transceivers are supported. See the “1-GB 
Transceivers” section on page B-3 in Appendix B for additional 
information on the SFP transceivers.
Digital Optical Monitoring 
(DOM) supportNot supported.
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 2-50 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Features (continued)
Feature Description 
						

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Table 2-51 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL 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 with CFC daughter card (WS-F6700-CFC) installed—9.0 lb 
(4.1 kg)
Base module with DFC daughter card WS-F6700-DFC installed—10.8 lb 
(4.5 kg)
Base module with DFC4-A or DFC4-AXL installed—10.8 lb (4.5 kg)
Power requirement
(at 42 VDC)
WS-X6748-SFP + CFC daughter card WS-X6700-CFC)
 –Module current—6.07 A
 –Module power—254.94 W
 –AC-input power—318.68 W
 –AC heat dissipation—1088.28 BTU/hour
 –DC-input power—342.66 W
 –DC heat dissipation—1170.19 BTU/hour
WS-X6748-SFP + DFC3A daughter card (WS-F6700-DFCA)
 –Module current—8.32 A
 –Module power—349.44 W
 –AC-input power—436.80 W
 –AC heat dissipation—1491.67 BTU/hour
 –DC-input power—469.68 W
 –DC heat dissipation—1603.95 BTU/hour
WS-X6748-SFP + DFC3B daughter card (WS-F6700-DFC3B)
 –Module current—8.02 A
 –Module power—336.84 W
 –AC-input power—421.05 W
 –AC heat dissipation—1437.89 BTU/hour
 –DC-input power—452.74 W
 –DC heat dissipation—1546.11 BTU/hour 
						

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Power and heat numbers
(continued)WS-X6748-SFP + DFC3BXL daughter card (WS-F6700-DFC3BXL)
 –Module current—8.62 A
 –Module power—362.04 W
 –AC-input power—452.55 W
 –AC heat dissipation—1545.46 BTU/hour
 –DC-input power—486.61 W
 –DC heat dissipation—1661.78 BTU/hour
WS-X6748-SFP + DFC3C daughter card (WS-F6700-DFC3C)
 –Module current—6.97 A
 –Module power—292.74 W
 –AC-input power—365.93 W
 –AC heat dissipation—1249.63 BTU/hour
 –DC-input power—393.47 W
 –DC heat dissipation—1343.69 BTU/hour
WS-X6748-SFP + DFC3CXL daughter card (WS-F6700-DFC3CXL)
 –Module current—7.67 A
 –Module power—322.14 W
 –AC-input power—402.68 W
 –AC heat dissipation—1375.14 BTU/hour
 –DC-input power—432.98 W
 –DC heat dissipation—1478.64 BTU/hour
WS-X6848-SFP-2T + DFC4-A daughter card
 –Module current—7.96 A
 –Module power—334.44 W
 –AC-input power—417.90 W
 –AC heat dissipation—1427.13 BTU/hour
 –DC-input power—449.35 W
 –DC heat dissipation—1534.55 BTU/hour
WS-X6848-SFP-2TXL + DFC4-AXL daughter card
 –Module current—8.08 A
 –Module power—339.44 W
 –AC-input power—424.20 W
 –AC heat dissipation—1448.64 BTU/hour
 –DC-input power—456.13 W
 –DC heat dissipation—1557.68 BTU/hour
Table 2-51 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Physical and Environmental Specifications (continued)
Item Specification 
						

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WS-X6816-GBIC
The WS-X6816-GBIC Ethernet module (Figure 2-24) provides 16 1-Gbps full- or half-duplex ports. 
Table 2-52 lists the module features, and Table 2-53 lists the module physical and environmental 
specifications. 
Figure 2-24 WS-X6816-GBIC Switching Module Front Panel
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 2-51 WS-X6748-SFP and WS-X6848-SFP-2T/-2TXL Physical and Environmental Specifications (continued)
Item Specification
Table 2-52 WS-X6816-GBIC Ethernet Module Features 
Feature Description
Ports per module
16 ports. Ports are numbered (left to right):
 –Top row, odd numbered ports 1 through 15.
 –Bottom row, even numbered ports 2 through 16.
2 port groups
Port ranges per port group: 1–8, 9–16
Port connector type SC (optical) or RJ-45 (copper) depending on the type of GBIC 
transceiver installed in the module port.
Cabling distance Depends on the GBIC transceiver installed in the module port. Refer to 
Appendix B for supported GBIC transceiver types and supported 
cabling distances.
Buffer size
Tx—1.17 MB per port
Rx—166 kB per port
QoS
Number of egress queues: 3
Number of ingress queues: 2
Number of thresholds per egress queue: 2
Number of thresholds per ingress queue: 4
5271916 PORT GIGABIT ETHERNET
WS-X6816-GBIC
2S
T
A
T
U
S
LIN
K LIN
K
1
12
4
LIN
K LIN
K
3
34
6
L
IN
K LIN
K
5
56
8
LIN
K LIN
K
7
78
10
LIN
K LIN
K
9
910
12
LIN
K LIN
K
11
11
12
14
LIN
K LIN
K
13
13 14
16
LIN
K L
IN
K
15
15 16 
						

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Maximum frame size Up to 9216 bytes per frame
Module oversubscription rate  Approximately  1:1
Supervisor engine support Supported by the following supervisor engines:
Supervisor Engine  2 (requires a Switch Fabric Module or SFM2 be 
installed in the switch chassis and a DFC3 daughter card installed 
on the WS-X6816-GBIC)
Supervisor Engine 720 (requires a DFC3A, DFC3B, or DFC3BXL 
daughter card be installed on the module)
Supervisor Engine 720-10GE (requires a DFC3A, DFC3B, or 
DFC3BXL daughter card be installed on the module)
Software support
With Supervisor Engine 720-10GE—12.2(33)SXH
With Supervisor Engine 720—12.2(14)SX
With Supervisor Engine 2—12.2(17d)SXB
With Supervisor Engine 2—12.1(8a)E
NoteWith CWDM GBIC and WS-G5483 GBIC 
support—12.1(13)E. With DWDM GBIC support—12.1(20)E2
Queues per port
Tx—1p2q2t
Rx—1p1q4t
NoteRx is 2q8t when using dCEF.
Chassis/slot restrictions
Can occupy any slot in any Catalyst 6500 or Catalyst 6500-E 
chassis except for the Catalyst 6513 switch chassis.
In the Catalyst 6513 chassis, the module can occupy only slots 
9–13. The module does not power up if it is installed in slots 1–8.
Fabric connection
Dual switch-fabric connections:
 –Fabric channel 1—Ports 1–8
 –Fabric channel 2—Ports 9–16
Fabric channel speed 8 Gb/sec
Module upgrades available
PoE support Not supported.
Distributed forwarding 
supportCan be upgraded in the field to support dCEF with the installation of a 
DFC daughter card (WS-F6K-DFC3A, WS-F6K-DFC3B, or the 
WS-F6K-DFC3BXL).
NoteRefer to the Catalyst 6500 Series DFC3A, DFC3B, and 
DFC3BXL Installation Note for additional information and 
field upgrade procedures.
Pluggable transceivers 
supportGBIC transceivers are supported. Refer to your software release notes 
to determine which GBIC transceivers are supported. See the “1-GB 
Transceivers” section on page B-3 in Appendix B for additional 
information on the GBIC transceivers.
Table 2-52 WS-X6816-GBIC Ethernet Module Features (continued)
Feature Description