Rack ATS Access Problems
For problems that persist or are not described here, contact Schneider Electric Customer Care at
www.apc.com.
Problem Solution
Unable to ping the ATS If the ATS’s Status LED is green, try to ping another node on the same network
segment as the ATS. If that fails, it is not a problem with the Rack ATS. If the Status
LED is not green, or if the ping test succeeds, perform the following checks:
• Verify all network connections.
• Verify the IP addresses of the Rack ATS and the NMS.
• If the NMS is on a different physical network (or subnetwork) from the Rack ATS,
verify the IP address of the default gateway (or router).
• Verify the number of subnet bits for the Rack ATS’s subnet mask.
Cannot allocate the
communications port through a
terminal program
Before you can use a terminal program to configure the Rack ATS, you must shut
down any application, service, or program using the communications port.
Cannot access the command line
interface through a serial
connection
Make sure that you did not change the baud rate. Try 2400, 9600, 19200, or 38400.
Cannot access the command line
interface remotely
• Make sure you are using the correct access method, Telnet or Secure SHell (SSH).
These can be enabled or disable independently. The Super User or an
Administrator can enable these access methods. By default, Telnet is enabled.
• For SSH, the Rack ATS may be creating a host key. The Rack ATS can take up to
one minute to create the host key, and SSH is inaccessible for that time.
Cannot access the web interface • Verify that HTTP or HTTPS access is enabled.
• Make sure you are specifying the correct URL — one that is consistent with the
security system used by the Rack ATS. SSL requires https, not http, at the
beginning of the URL.
• Verify that you can ping the Rack ATS.
• Verify that you are using a Web browser supported for the Rack ATS. See “Web
Interface” on page 63.
• If the Rack ATS has just restarted and SSL security is being set up, the Rack ATS
may be generating a server certificate. The Rack ATS can take up to one minute to
create this certificate, and the SSL server is not available during that time.
