Doc. No. 78-3816-01 Rev. A0
This guide provides configuration and connection instructions for the EIA/TIA-232 console/modem cable and the adapters used when connecting a PC, a VT series terminal, or a modem to the Catalyst 1800 Token Ring switch to access out-of-band management via the EIA/TIA-232 DB-9 male console port.
Note EIA/TIA-232 was known as recommended standard RS-232 before its acceptance as a standard by the Electronic Industries Association (EIA) and Telecommunications Industry Association (TIA).
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Management terminal and modem requirements are as follows:
•VT 320/420-series terminal or VT-type terminal running emulation programs for the VT series
•IBM or compatible PC running a VT-series emulation software package
•Hayes-compatible modem
This guide also provides the following pin assignments:
• DB-9 console port connector on the Catalyst 1800 chassis
• DB-9 PC connector
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DB-25 VT-series connector
DB-25 modem connector
The Catalyst 1800 console cable kit (part number 78-1188-01) includes
•One 6-foot (1.8-meter) length of unshielded twisted pair (UTP) EIA/TIA-232 cable with RJ-45 connectors at each end
•One RJ-45 to DB-9 female adapter (for console port connection)
•One RJ-45 to DB-9 female adapter (for PC connection)
•One RJ-45 to DB-25 female adapter (for VT terminal connection)
•One RJ-45 to DB-25 male adapter (for modem connection)
Connecting to a VT-Series Terminal
Follow these steps to connect a VT 320/420-series terminal to a Catalyst 1800 Token Ring switch (see Figure 1):
Step 1 Plug either end of the EIA/TIA-232 cable into the RJ-45-to-DB-9 female adapter labelled “Console port.”
Step 2 Connect the console port female adapter to the male DB-9 console port on the front of the Catalyst 1800 chassis.
Step 3 Plug the RJ-45 connector at the other end of the EIA/TIA-232 cable into the
RJ-45-to-DB-25 female adapter labelled “VT series.”
Step 4 Connect the VT-series DB-25 female adapter to the DB-25 male adapter on the cable extending from the VT terminal’s COMM port.
Step 5 Turn on the terminal and access the setup directory. Set the following parameters on your terminal:
Transmit |
9600 |
Bits per character (BPC) |
8 |
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Parity |
None |
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Stop bit |
1 |
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Flow control |
Off |
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After these parameters are set, you can access out-of-band management. Refer to the Catalyst 1800 Token Ring Switch User Guide for instructions on using the console interface.
2 Catalyst 1800 Token Ring Switch Cable Kit Guide
Figure 1 Connecting a VT-Series Terminal to a Catalyst 1800 Switch
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Pwr A |
Sys Status |
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Pwr B |
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Pwr A |
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Pwr B |
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Catalyst 1800 |
DB-9 console connector/port interface
VT series adapter
RS-232 cable
H8710
DB-25 male adapter |
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to VT terminal |
VT 320/340 series terminal |
Connecting to an IBM PC or Compatible
Follow these steps to connect an IBM PC or compatible to a Catalyst 1800 switch (see Figure 2). Note that the PC must be running a VT terminal emulation program.
Step 1 |
Plug either end of the EIA/TIA-232 cable into the RJ-45-to-DB-9 female adapter labelled |
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“Console port.” |
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Step 2 |
Connect the console port female adapter to the male DB-9 console port on the front of the |
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Catalyst 1800 chassis. |
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Step 3 |
Plug the RJ-45 connector at the other end of the EIA/TIA-232 cable into the |
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RJ-45-to-DB-9 female adapter labelled “PC.” |
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Step 4 |
Connect the DB-9 female adapter to the appropriate male communications port on the |
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PC. |
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Step 5 |
Turn on the PC and configure its VT emulation package with following parameters: |
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Transmit |
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9600 |
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Bits per character (BPC) |
8 |
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Parity |
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None |
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Stop bit |
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1 |
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Flow control |
Off |
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After these parameters are set, you can access out-of-band management. Refer to the Catalyst 1800 Token Ring Switch User Guide for instructions on using the console interface.
Catalyst 1800 Token Ring Switch Cable Kit Guide 3