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Cisco Fast Ethernet Full-Duplex
TX Tap Installation Note

Cisco Fast Ethernet Full-Duplex
TX Tap Installation Note


Note This tap kit is used with Multiport Fast Ethernet and single-port Full-Duplex Fast Ethernet SwitchProbe devices. This kit is also included with the Fast EtherChannel software option.

Note The illustrations in this document show only the connections to a Fast Ethernet SwitchProbe device.

Some Cisco SwitchProbe devices require a TX tap to monitor the network in full-duplex mode. One TX tap kit is included with the device.

This document provides instructions for connecting a Fast Ethernet Full-Duplex TX tap to a SwitchProbe device. The TX tap is passive—link integrity is maintained whether the device is on
or off.

Contents of the Tap Kit

The Fast Ethernet Full-Duplex TX tap kit consists of the following items:

The Fast Ethernet Full-Duplex TX tap (Figure 1) contains two Network ports (Net A and Net B) and two Probe ports (Probe A and Probe B).


Figure 1: Fast Ethernet Full-Duplex TX Tap—Front Panel


Connecting the Tap to the SwitchProbe Device

To connect the full-duplex 100BaseTX ports of the Fast Ethernet SwitchProbe device to two switches, see Figure 2 and follow these steps:


Note Repeat these steps for each full-duplex connection. Verify that the network into which you are going to tap is running at 100 Mbps and set to full-duplex mode.

Step 1   Connect a category 5 UTP straight-through cable into one of the two RJ-45 100BaseTX ports on the SwitchProbe Fast Ethernet interface.

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

Step 2   Connect the other end of the category 5 UTP cable into the port labeled Probe A on the Fast Ethernet tap.

Step 3   Connect a category 5 UTP straight-through cable into the other RJ-45 100BaseTX port on the same Fast Ethernet interface.

Step 4   Connect the other end of the category 5 UTP cable into the port labeled Probe B on the Fast Ethernet tap.

Step 5   Connect a category 5 UTP straight-through cable into the port labeled Network A on the Fast Ethernet tap.

Step 6   Connect the other end of the category 5 UTP cable into Switch 1.

Step 7   Connect a category 5 UTP straight-through cable into the port labeled Network B on the Fast Ethernet tap.

Step 8   Connect the other end of the category 5 UTP cable into Switch 2.

Step 9   Connect the power cord to the back of the Fast Ethernet tap.

Step 10   Connect the power cord to an appropriate power source.


Figure 2:
Fast Ethernet TX Tap Connection


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You can access CCO in the following ways:

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Note If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a maintenance contract, contact Cisco's Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.

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Posted: Fri Sep 6 19:58:11 PDT 2002
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