APC AP7752 Switch User Manual


 
Automatic Transfer Switch—Installation and Quick Start8
DHCP. You can use an RFC2131/RFC2132-compliant DHCP server to configure the
TCP/IP settings for the Rack ATS.
This section summarizes the Rack ATS communication with a DHCP server. For more detail
about how a DHCP server is used to configure the network settings for the Rack ATS, see
“DHCP Configuration” in the User’s Guide.
1. The Rack ATS sends a DHCP request that uses the following to identify itself:
Vendor Class Identifier (APC by default)
Client Identifier (by default, the MAC address of the Rack ATS)
User Class Identifier (by default, the identification of the application firmware used by the
Rack ATS)
2. A properly configured DHCP server responds with a DHCP offer that includes all of the settings
that the Rack ATS needs for network communication. The DHCP offer also includes the Ve ndor
Specific Information option (DHCP option 43). By default, the Rack ATS ignores DHCP offers
that do not encapsulate the APC cookie in the Vendor Specific Information option using the
following hexidecimal format:
Option 43 = 01 04 31 41 50 43
where
The first byte (
01) is the code
The second byte (
04) is the length
The remaining bytes (
31 41 50 43) are the APC cookie
See your DHCP server documentation to add code to the Vendor Specific Information
option.
Local access to the control console
You can use a local computer to connect to the ATS to access the control console.
1. Select a serial port at the local computer and disable any service that uses that port.
2. Use the communication cable to connect the selected port to the serial port on the front panel of
the ATS.
3. Run a terminal program (such as HyperTerminal
®
) and configure the selected port for 9600 bps,
8 data bits, no parity, 1 stop bit, and no flow control. Save the changes.
4. Press
ENTER to display the User Name prompt.
5. Use apc for the user name and password.
6. See “Control console” on page 10 to finish the configuration.
To disable the requirement that a DHCP offer include the APC cookie, use the DHCP
Cookie Is setting in the control console: Network>TCP/IP>Boot Mode>DHCP
only>Advanced>DHCP Cookie Is. To access the control console, see “Remote access
to the control console” on page 9.