Specifications

14 – Configuring and Monitoring a Redundant Server System

332 R400

Time Until Stations Fail Over to Backup Network

The time until a Station fails over to the backup network depends on:

•The KeepAliveTimeout and DisConnectTimeout settings in the

station.ini file.

•The TcpMaxConnectRetransmissions setting in the registry.

Note If you adjust the timeout settings, you must also adjust the time until the server

disconnects Station. If these times are not properly synchronized, Stations will

disconnect frequently.

To change the KeepAliveTimeout and DisConnectTimeout settings for a computer:

Edit the file %SystemRoot%\station.ini. In the [Station] section, add

or uncomment the lines:

• For fast failover:

KeepAliveTimeout=30

DisConnectTimeout=30

• For default failover:

KeepAliveTimeout=150

DisConnectTimeout=150

Both timeouts are in units of 0.1 seconds.

Edit the registry entry for TcpMaxConnectRetransmissions:

a) From a command prompt, enter Regedt32.

b) Open the path

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Service

s\Tcpip\Parameters

c) Open TcpMaxConnectRetransmissions. If it does not exist, use Edit

⇒

Add Value to add it. The Data Type is REG_DWORD.

d) In the DWORD Editor, enter 0 for fast failover, or Decimal 3 for default

failover. Then select OK.

e) Exit Registry Editor. You need to restart the computer to use the new

setting.

plscpcg.book Page 332 Monday, May 28, 2001 10:11 AM