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2-20 LightStream 2020 Installation Guide
Basic LS2020 Configuration Tasks
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Note The console port baud rate can be changed at any time, but the change will take effect only
on power-up of the LS2020 chassis or a reset of the applicable switch card. Similarly, the modem
port baud rate can be changed at any time, but the change will take effect only on power-up of the
LS2020 chassis, a resetof the applicable switch card,or when the modem port isreinitialized via the
TCS hub init command.
Changing Modem Port Baud Rate if Modem Connection Cannot Be Established
If the modem port on a Release 2 switch card (SC2) is initialized with a baud rate other than that
with which the modem can operate, you can change the modem port baud rate through either of two
methods, whichever is appropriate for your LS2020 configuration:
• Method 1 – Changing modem baud rate locally—This method requires access to the local
console of your LS2020 switch.
• Method 2 – Changing modem baud rate through use of redundant components—This
method assumes that the local console terminal is not available, such as when a software
installation or upgrade is being done remotely. It also assumes that your LS2020 chassis is
equipped with redundant Release 2 switch cards and modems, and that you have the ability to
dial into the LS2020 chassis using the other switch card and modem.
Method 1
If you have access to the local console, perform the following procedure to match the modem port
baud rate:
Step 1 Issue the set command from the console, as shown below:
set {sa | sb} modem baudrate {2400 | 9600}
where {sa | sb} represents either Release 2 switch card A or B, as appropriate, and
{2400 | 9600} represents the available choices in matching the modem port baud rate.
Step 2 Issue the init command at the TCS hub prompt:
init {sa | sb} modem
This command initializes the modem port on the specified switch card with the selected baud rate.
Method 2
If you do not have access to the local console, but you can dial into the LS2020 chassis by means of
a switch card, perform the following procedure to match the baud rate of the desired modem port:
Step 1 Dial into the LS2020 chassis and determine the address of the switch card to which the
desired modem is attached, that is, the modem for which you are attempting to match the
baud rate.