Table Of Contents
Cable and Connector Specifications
Uplink Port Transceiver Modules
1GE Uplink Ports and Cabling Specifications
10GE Uplink Ports and Cabling Specifications
GBIC Module Cabling Specifications
Console Port Cabling Specifications and Pinouts
Console Port Cabling Specifications
Console Port Signals and Pinouts
DB-9 Adapter (for Connecting to a PC)
DB-25 Adapter (for Connecting to a Terminal)
Console Port Mode 2 Signaling and Pinouts (Sup2 Only)
Cleaning the Fiber-Optic Connectors
LX/LH GBIC and MMF Cable Considerations
Patch Cord Configuration Example
Cable and Connector Specifications
This appendix lists the cable and connector specifications for the Cisco 7600 route switch processors (RSPs) and supervisor engines. It contains the following information:
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Limiting Connection Distances
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Limiting Connection Distances
The length of your networks and the distances between connections depend on the type of signal, the signal speed, and the transmission media (the type of cabling used to transmit the signals). For example, fiber-optic cable has a greater channel capacity than twisted-pair cabling. The distance and rate limits in this appendix are the IEEE-recommended maximum speeds and distances for signaling. You can get good results with rates and distances greater than those described here, although you do so at your own risk. You need to be aware of the electrical problems that may arise and compensate for them.
Uplink Port Transceiver Modules
Transceiver modules that plug into the front panel of the supervisor engine or route switch processor provide the uplink ports for the router. Several types of transceiver modules are available: small form-factor pluggable (SFP) modules, X2 modules, XENPAK modules, and Gigabit Interface Converter (GBIC) modules.
Table B-1 lists the orderable part numbers for supported transceiver modules. In addition, the following tables provide information about the modules and their cabling specifications:
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1GE Uplink Ports and Cabling Specifications
Table B-2 describes the 1GE SFP transceiver modules that are used for Cisco 7600 uplink ports. Table B-3 provides cabling specifications.
Note
Table B-3 lists the cabling specifications for the 1GE uplink ports, which are located on SFP transceiver modules that plug into the front panel.
Table B-3 1GE Cabling Specifications
(Product ID)GLC-SX-MM
SFP-GE-S
850
MMF 1
62.5
62.5
50
50160
200
400
500722 ft (220 m)
902 ft (275 m)
1640 ft (500 m)
1804 ft (550 m)GLC-LH-SM
SFP-GE-L
1300
MMF 2
62.5
50
50500
400
5001804 ft (550 m)
1804 ft (550 m)
1804 ft (550 m)SMF 3
9/10
—
6.2 mi (10 km)
GLC-ZX-SM
1550
SMF
9/10
—
43.5 mi (70 km)
SMF 4
8
—
62.1 mi (100 km)
GLC-T
SFP-GE-T
—
Cat 5, 5e, or 6 copper wire
—
—
328 ft (100 m)
GLC-BX-D
1490-nm TX 1310-nm RX
SMF 3
—
—
6.21 mi (10 km)
GLC-BX-U
1310-nm TX 1490-nm RX
SMF 3
—
—
6.21 mi (10 km)
1 Multimode fiber (MMF) only.
2 A mode-conditioning patch cord is required when using the GLC-LH-SM module with 62.5-micron diameter MMF for link distances greater than 984 ft (300 m). In addition, we do not recommend using the GLC-LH-SM module and MMF without a patch cord for very short link distances (tens of meters) because it may result in an elevated bit error rate (BER).
Install the patch cord between the module and the MMF cable on both the transmit and receive ends of the link. For more information about the patch cord, see the "Mode-Conditioning Patch Cord Description" section of the document at the following URL:
http://www.cisco.com/en/US/products/hw/routers/ps341/prod_module_installation_guide09186a00801cc731.html#wp29618
3 ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
4 Dispersion-shifted single-mode fiber-optic cable.
10GE Uplink Ports and Cabling Specifications
Table B-4 describes the X2 and XENPAK transceiver modules used for the 10GE uplink ports on the RSP720-10GE and WS-SUP32-10GE-3B. Table B-5 provides cabling specifications.
Table B-5 lists the cabling specifications for 10GE uplink ports, which are located on X2 or XENPAK transceiver modules that plug into the RSP720-10GE and WS-SUP32-10GE-3B front panel.
Note
Table B-5 10GE Cabling Specifications
(Product ID)X2-10GB-SR
XENPAK-10GB-SR
850
MMF
62.5
62.5
50
50
50160
200
400
500
200085.3 ft (26 m)
108.3 ft (33 m)
216.5 ft (66 m)
269.0 ft (82 m)
984.3 ft (300 m)X2-10GB-LR
XENPAK-10GB-LR
1310
SMF
ITU-T G.652
—
6.2 mi (10 km)
X2-10GB-ER 2
XENPAK-10GB-ER
1550
SMF
ITU-T G.652
—
24.9 mi (40 km) 3
X2-10GB-LX4
XENPAK-10GB-LX4
1310
MMF
62.5
50
50500
400
500984.3 ft (300 m)
787.4 ft (240 m)
984.3 ft (300 m)X2-10GB-CX4
XENPAK-10GB-CX4
—
CX4 (copper)
—
—
49.2 ft (15 m)
X2-10GB-LRM
1310
MMF
62.5
50.0
50.0500
400
500220 m (722 feet)
100 m (328 feet)
220 m (722 feet)X2-10GB-ZR
1550
SMF
G.652 fiber
—
80 km (49.72 miles)4
1 Minimum cabling distance for -LR, -SR, -LX4, and -ER modules is 2 m, according to the IEEE 802.3ae standard.
2 Requires 5 dB 1550 nm fixed loss attenuator for < 20 km. Attenuator is available as a spare. The part number is WS-X6K-5DB-ATT=.
3 Links longer than 30 km are considered engineered links.
4 When shorter distances of SMF are used, an inline optical attenuator (10 dB) must be used to avoid overloading and damaging the receiver.
GBIC Module Cabling Specifications
Table B-6 provides cabling specifications for the 1000BASE-X interfaces on the Gigabit Interface Converter (GBIC) modules installed in the Supervisor Engine 2. All GBIC interfaces have SC connectors, and the minimum cable distance for all GBICs listed (MMF and SMF) is 6.5 feet (2 meters).
Table B-6 Gigabit Ethernet Maximum Transmission Distances
SX3
850
MMF
62
62
50
50160
200
400
500722 ft (220 m)
902 ft (275 m)
1640 ft (500 m)
1804 ft (550 m)LX/LH
1300
MMF4
62
50
50500
400
5001804 ft (550 m)
1804 ft (550 m)
1804 ft (550 m)SMF (LX/LH)
9/10
-
6.2 mi (10 km)
ZX5
1550
SMF6
9/10
8-
-43.5 mi (70 km)7
62.1 mi (100 km)
1 Core size refers to the core diameter. The cladding diameter is usually 25 microns.
2 Cable distances are based on fiber loss.
3 MMF only.
4 Patch cord required.
5 A maximum of 24 1000BASE-ZX GBICs is allowed for each system to comply with FCC Class A regulations.
6 Dispersion-shifted single-mode fiber-optic cable.
7 The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB attenuator installed at each end of the link. Without attenuators, the minimum link distance is 24.9 miles (40 km).
Console Port Cabling Specifications and Pinouts
The console port, which is located on the front panel of the supervisor engine or route switch processor, provides access to the Cisco 7600 router. The following sections provide information about the console port cabling specifications and the port's signals and pinouts.
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Console Port Cabling Specifications
Table B-7 lists the maximum transmission distances for console port cables. See the "Console Port Signals and Pinouts" section for console port and cable pinout information.
The accessories kit that is shipped with your router contains the necessary cable and adapters to connect a terminal or modem to the front-panel console port.
Table B-7 EIA/TIA-232 Transmission Speed Versus Distance
2400
200
60
4800
100
30
9600
50
15
19,200
25
7.6
38,400
12
3.7
56,000
8.6
2.6
Console Port Signals and Pinouts
The Cisco 7600 series router is shipped with an accessories kit that contains the cable and adapters you need to connect a console (an ASCII terminal or PC running terminal emulation software) or modem to the console port on the front panel of the supervisor engine or route switch processor. For information about the signals and pinouts for the Supervisor Engine 2 console port in mode 2, see the "Console Port Mode 2 Signaling and Pinouts (Sup2 Only)" section.
The accessories kit includes these items:
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Identifying a Rollover Cable
You can identify a rollover cable by comparing the two ends of the cable. Holding the cables side-by-side, with the tab at the back, the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug. (See Figure B-1.) If you purchased your cable from Cisco Systems, pin 1 is white on one connector, and pin 8 is white on the other (a rollover cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).
Figure B-1 Identifying a Rollover Cable
DB-9 Adapter (for Connecting to a PC)
Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-9 female DTE adapter (labeled "Terminal") to connect the console port to a PC running terminal emulation software. Table B-8 lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-9 female DTE adapter.
Table B-8 Console Port DB-9 Adapter Pinouts
RTS
11
8
8
CTS
DTR
2
7
6
DSR
TxD
3
6
2
RxD
GND
4
5
5
GND
GND
5
4
5
GND
RxD
6
3
3
TxD
DSR
7
2
4
DTR
CTS
81
1
7
RTS
1 Pin 1 is connected internally to Pin 8.
DB-25 Adapter (for Connecting to a Terminal)
Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-25 female DTE adapter (labeled "Terminal") to connect the console port to a terminal. Table B-9 lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 female DTE adapter.
Table B-9 Console Port DB-25 Adapter Pinouts
RTS
11
8
5
CTS
DTR
2
7
6
DSR
TxD
3
6
3
RxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
TxD
DSR
7
2
20
DTR
CTS
81
1
4
RTS
1 Pin 1 is connected internally to Pin 8.
Modem Adapter
Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-25 male DCE adapter (labeled "Modem") to connect the console port to a modem. Table B-10 lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE adapter.
Table B-10 Console Port Modem Adapter Pinouts
RTS
11
8
4
RTS
DTR
2
7
20
DTR
TxD
3
6
3
TxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
RxD
DSR
7
2
8
DCD
CTS
81
1
5
CTS
1 Pin 1 is connected internally to Pin 8.
Console Port Mode 2 Signaling and Pinouts (Sup2 Only)
Table B-11 lists the pinouts for the Supervisor Engine 2 console port mode switch in mode 2 (switch in the out position). In this mode, you can connect a terminal to the supervisor engine using a Catalyst 5000 family Supervisor Engine III console cable and adapter (not provided). For instructions, see "Supervisor Engine 2" in the "Connecting a Terminal" section on page 3-9.
Table B-11 Console Port Pinouts (Supervisor Engine 2, Port Mode Switch Out)
1 (RTS)1
Output
2 (DTR)
Output
3 (RxD)
Input
4 (GND)
GND
5 (GND)
GND
6 (TxD)
Output
7 (DSR)
Input
8 (CTS)1
Input
1 Pin 1 is connected internally to Pin 8.
RJ-45 Connector
The RJ-45 connector is used to connect a Category 3, Category 5, Category 5e, or Category 6 FTP from the external network to the module interface connector. (See Figure B-2.) Table B-12 lists the connector pinouts and signal names for a 10/100BASE-T crossover (MDI-X) cable. Figure B-3 shows a schematic of the 10/100BASE-T crossover cable. Table B-13 lists the connector pinouts and signal names for a 1000BASE-T crossover (MDI-X) cable. Figure B-4 shows a schematic of the 1000BASE-T crossover cable.
Caution
Caution
Inline power for IP phones uses connector pins 1, 2, 3, and 6 in a Category 5, Category 5e, or Category 6 cable to transmit power (6.3 W) from the router. This method of supplying power is sometimes called phantom power because the IP phone power travels over the same pairs of wires used to transmit the Ethernet signals. The IP phone voltage is completely transparent to the Ethernet signals and does not interfere with their operation.
Figure B-2 RJ-45 Interface Cable Connector
Figure B-3 Twisted-Pair Crossover 10/100BASE-T Cable Schematic
Figure B-4 Twisted-Pair Crossover 1000BASE-T Cable Schematic
Fiber-Optic Connectors
This section describes the SC, MT-RJ, and LC fiber-optic connectors and provides instructions for cleaning the fiber-optics connectors. It contains the following sections:
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SC Connectors
Warning
The SC single-mode fiber connector is used to connect fiber-optic module ports with the external network. (See Figure B-5.)
Figure B-5 SC Optical Connector
\
Always make sure that you insert the connector completely into the socket. This action is especially important when you are making a connection between a module and a long distance (1.24 miles [2 kilometers]) or a suspected highly attenuated network. If the LINK LED on the supervisor engine or route switch processor does not light, try removing the network cable plug and reinserting it firmly into the module socket. It is possible that enough dirt or skin oils have accumulated on the plug faceplate (around the optical-fiber openings) to generate significant attenuation, reducing the optical power levels below threshold levels so that a link cannot be made.
Caution
For fiber-optic connector cleaning instructions, see the "Cleaning the Fiber-Optic Connectors" section.
MT-RJ Connectors
Warning
The MT-RJ style connector is used on fiber-optic modules to increase port density. (See Figure B-6.)
Figure B-6 MT-RJ Optical Connector
When you are connecting MT-RJ cables to a module, make sure you firmly press the connector plug into the socket. The upper edge of the plug must snap into the upper front edge of the socket. You may or may not hear an audible click. Gently pull on the plug to confirm whether or not the plug is locked into the socket. To disconnect the plug from the socket, press down on the raised portion on top of the plug (releasing the latch). You should hear an audible click indicating that the latch has released. Carefully pull the plug out of the socket.
Make sure that you insert the connector completely into the socket. This action is especially important when you are making a connection between a module and a long distance (1.24 miles [2 kilometers]) or a suspected highly attenuated network. If the LINK LED on the supervisor engine or route switch processor does not light, try removing the network cable plug and reinserting it firmly into the module socket. It is possible that enough dirt or skin oils have accumulated on the plug faceplate (around the optical-fiber openings) to generate significant attenuation, reducing the optical power levels below threshold levels so that a link cannot be made.
Caution
For fiber-optic connector cleaning instructions, see the "Cleaning the Fiber-Optic Connectors" section.
When you disconnect the fiber-optic cable from the module, grip the body of the connector. Do not grip the connector jacket-sleeve. Gripping the sleeve can, over time, compromise the integrity of the fiber-optic cable termination in the MT-RJ connector.
LC Connectors
The small form-factor pluggable (SFP) tranceiver modules used on the Supervisor Engine 720, Route Switch Processor 720, and RSP720-10GE uplink ports use either MT-RJ connectors or LC connectors depending on the SFP module vendor. Figure B-7 shows an LC connector.
Figure B-7 LC Fiber-Optic Connector
Caution
For fiber-optic connector cleaning instructions, see the "Cleaning the Fiber-Optic Connectors" section.
When you disconnect the fiber-optic cable from the module, grip the body of the connector. Do not grip the connector jacket-sleeve. Gripping the sleeve can, over time, compromise the integrity of the fiber-optic cable termination in the LC connector.
Cleaning the Fiber-Optic Connectors
Fiber-optic connectors are used to connect two fibers together. When these connectors are used in a communications system, proper connection is critical.
Fiber-optic connectors differ from electrical connectors or microwave connectors. In a fiber-optic system, light is transmitted through an extremely small fiber core. Because fiber cores are often 62.5 microns or less in diameter in multimode fiber (MMF) and 8.3 to 10 microns in single-mode fiber (SMF), dust particles and any contamination on the face of the fiber core can degrade the performance of the connector interface where the two cores meet. The connector must be precisely aligned, and the connector interface must be absolutely free of trapped contaminants.
Caution
To clean the fiber-optic connectors, use a CLETOP cassette cleaner (type A for SC connectors or type B for MT-RJ connectors) and follow the product instructions. If a CLETOP cassette cleaner is not available, follow these steps:
Step 1
Step 2
Step 3
The connectors used inside the system have been cleaned by the manufacturer and connected to the adapters in the proper manner. The operation of the system should be error-free if the customer provides clean connectors on the application side, follows the previous directions, and follows the listed guidelines:
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Note
LX/LH GBIC and MMF Cable Considerations
The following sections describe the things you should consider if you are using a Supervisor Engine 2 with a long wavelength/long haul (LX/LH) GBIC with 62.5-micron diameter MMF cable.
Patch Cord
When using the long wavelength/long haul (LX/LH) GBIC with 62.5-micron diameter MMF on links that span more than 984 feet (300 meters), a mode-conditioning patch cord is required. You must install the patch cord (Cisco product number CAB-GELX-625 or equivalent) between the GBIC and the MMF cable on both the transmit and receive ends of the link.
Note
Note
Patch Cord Configuration Example
Figure B-8 shows a typical patch cord configuration.
Figure B-8 Patch Cord Configuration
Patch Cord Installation
Warning
Plug the end of the patch cord labeled "To Equipment" into the GBIC (see Figure B-9). Plug the end labeled "To Cable Plant" into the patch panel. The patch cord is 9.84 feet (3 meters) long and has duplex SC male connectors at each end.
Figure B-9 Patch Cord Installation
