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This chapter describes how to connect Fast Ethernet-Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI) network modules for Cisco 3600 series routers. These network modules provide ports for connection both to a 10- or 100-Mbps Ethernet LAN and to an ISDN PRI LAN. It contains the following sections:
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Note Unless specifically identified, references to Fast Ethernet-PRI network modules in this chapter include all these network modules. |
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Note Fast Ethernet-PRI network modules are supported in Cisco 3600 series routers only. |
This section provides information about the following network modules:
Use a straight-through two-pair Category 5 unshielded twisted-pair (UTP) cable to connect the RJ-45 port on the Fast Ethernet-PRI network module to a switch, hub, repeater, server, or other network device. These ports are color-coded yellow. Figure 5-3 shows the RJ-45 port connected to a hub.
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Note RJ-45 cables are not available from Cisco Systems. These cables are widely available and must be Category 5 cables. |
This section describes how to connect channelized T1 and channelized E1 ISDN PRI ports to the network. These ports are color-coded tan.
Use a DB-15-to-DB-15 T1 serial cable to connect a CT1/PRI port to a T1 channel service unit (CSU). (See Figure 5-4.)
This section provides information about the following network modules:
To connect the Fast Ethernet port, see the "Fast Ethernet Port" section.
To connect the CT1/PRI-CSU PRI ports, use a straight-through RJ-48C-to-RJ-48C cable to connect a PRI port to an RJ-48C jack. (See Figure 5-7.) These ports are color-coded tan.
This section provides information about the following network modules:
To connect the Fast Ethernet port, see the "Fast Ethernet Port" section.
Use the appropriate cable to connect a CE1/PRI-B (120-ohm) port to an E1 CSU. (See Figure 5-10, Figure 5-11, and Figure 5-12, showing DB-15, twinax, and RJ-45 CSUs respectively.) These ports are color-coded tan.
Use the appropriate cable to connect a CE1/PRI-U (75-ohm) port to an E1 CSU. Figure 5-13 shows a CSU with BNC connectors. These ports are color-coded tan.
This section describes how to configure an E1 network module for balanced or unbalanced termination. The module consists of two circuit boards, or cards. A terminal block and a set of five jumpers is provided on each card to configure termination. Figure 5-14 shows these terminal blocks.
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Caution To avoid damaging electrostatic discharge (ESD)-sensitive components, observe all ESD precautions when handling the circuit boards. |
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Note The position of the jumpers is different on the two terminal blocks. Refer to Figure 5-14 and the silk screening on the network module to ensure the correct jumper position. |
Figure 5-15 shows a typical jumper.
To configure the network module for unbalanced mode, follow these steps:
The following warning applies to routers that use a DC power supply:
Step 2 Loosen the module's captive mounting screws, using a Phillips or flat-blade screwdriver.
Step 3 Hold the captive screws between two fingers, and pull the network module toward you until it slides free of the chassis.
Step 4 Set the network module on an ESD-preventive mat.
Step 5 Using needlenose pliers, set jumpers J5 through J9 on the top terminal block to the 75 ohm position. Set jumpers J4 through J8 on the bottom terminal block also to the 75 ohm position. (See Figure 5-16.)
Figure 5-17 shows the top terminal block set to unbalanced (75 ohm) position.
Step 6 Align the network module with the guides in the chassis and slide it gently into the slot.
Step 7 Push the module into place until you feel its edge connector mate securely with the connector on the motherboard.
Step 8 Fasten the module's captive mounting screws into the holes in the chassis, using the Phillips or flat-blade screwdriver.
Step 9 If the router was previously running, reinstall the network interface cables and turn ON power to the router.
The following warning applies to routers that use a DC power supply:
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Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position. |
To configure the network module for balanced mode, follow these steps:
The following warning applies to routers that use a DC power supply:
Step 2 Loosen the module's captive mounting screws, using a Phillips or flat-blade screwdriver.
Step 3 Hold the captive screws between two fingers, and pull the network module toward you until it slides free of the chassis.
Step 4 Set the network module on an ESD-preventive mat.
Step 5 Using needlenose pliers, set jumpers J5 through J9 on the top terminal block to the 120 ohm position. Set jumpers J4 through J8 on the bottom terminal block also to the 120 ohm position. (See Figure 5-16.)
Step 6 Align the network module with the guides in the chassis and slide it gently into the slot.
Step 7 Push the module into place until you feel its edge connector mate securely with the connector on the motherboard.
Step 8 Fasten the module's captive mounting screws into the holes in the chassis, using the Phillips or flat-blade screwdriver.
Step 9 If the router was previously running, reinstall the network interface cables and turn ON power to the router.
The following warning applies to routers that use a DC power supply:
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Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position. |
All network modules have an enable (EN) LED. This LED indicates that the module has passed its self-tests and is available to the router.
All Fast Ethernet-PRI modules have four LEDS for the Fast Ethernet port, and four additional LEDs for each PRI port. Figure 5-18 shows LEDs for the 1-port Fast Ethernet 2-port channelized E1/ISDN PRI balanced (120-ohm) network module as an example.
Table 5-1 describes Fast Ethernet LEDs. Table 5-2 describes ISDN PRI LEDs.
| LED | Color | Meaning |
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COLL | Yellow | Collision activity is occurring on the network. |
LINK | Green | A link has been established with the station at the other end of the cable. |
100MBPS | Green | Speed of the interface is 100 Mbps. |
FDX | Green | Interface is in full-duplex mode. |
| LED | Color | Meaning |
|---|---|---|
REMOTE ALARM | Yellow | A remote source is indicating an error at its end of the connection. |
LOCAL ALARM | Yellow | Incoming signal shows loss of signal, loss of frame, or excessive errors. |
LOOPBACK | Yellow | Line or local loopback state is set or detected. |
CARRIER DETECT | Green | DS-1 carrier to the network is detected. |
Posted: Fri Jun 2 16:39:44 PDT 2000
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