Troubleshooting guide

4
Special Considerations
Special Considerations for Release 2.0.9
Setting and Detecting Baud Rate on the Console or Modem Ports
The TCS HUB for Release 2 switch cards no longer uses the BREAK detection mechanism (also
known as the auto-baud or pseudo-auto-baud mechanism) to select the baud rate on either the
console or modem port.
Note Setting and detecting the baud rate applies only to the Release 2 switch card.
The set and show commands of the Release 2 switch card TCS HUB are now used to select and
display the baud rate. These commands manipulate and interpret the contents of certain fields in the
midplane EEPROM that are used by the Release 2 switch card TCS HUB to initialize the console
and modem port baud rates.
The midplane EEPROM locations used to maintain the console and modem baud rates were
previously reserved. When the new Release 2 switch card TCS HUB code is installed in a Release 2
switch card in a system that has never had those reserved midplane EEPROM locations initialized,
the new code detects that these locations are uninitialized and initializes them with default values
(9600 baud for the console port and 2400 baud for the modem port).
The syntax of the set command of the Release 2 switch card TCS HUB is as follows:
set {sa | sb} {console | modem} baudrate rate
The arguments of the command are as follows:
The syntax of the show command of the Release 2 switch card TCS HUB is as follows:
show {sa | sb} {console | modem} baudrate
{ sa | sb } Specify Switch Card A or Switch Card B.
{console | modem} Specify whether the baud rate is for the console port or the modem port.
baudrate rate
Specify the rate as follows:
Console port 300
1200
2400
4800
9600
19,200
38,400
(default)
Modem port 2400
9600
(default)