Xerox Xerox Secure Access Unified ID System Support & Software Installation Guide
Setting the Xerox Secure Access Unified ID System Authentication Device IP Address
Xerox Secure Access Unified ID System
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6. Authentication Device – DCE communication
establishment description
The following describes how the Authentication Device boots.
1.
1.
If the Authentication Device has the IP Address of the server, it will send a directed bootp request
to the server address; otherwise it will send a bootp broadcast (i.e, if the server IP address is
0.0.0.0, the Authentication Device will issue a broadcast bootp).
The following information is included in the bootp request.
•
to the server address; otherwise it will send a bootp broadcast (i.e, if the server IP address is
0.0.0.0, the Authentication Device will issue a broadcast bootp).
The following information is included in the bootp request.
•
IP Address of the Authentication Device
•
MAC Address of the Authentication Device
•
Terminal Type is set to Xerox Secure Access mode. DCE will ignore any bootp request that
does not have the appropriate signature embedded in the request. The signature is Xerox =
'XEFB'
does not have the appropriate signature embedded in the request. The signature is Xerox =
'XEFB'
2.
Authentication Device waits for a Bootp response. The bootp response must be directed at the
Authentication Device.
Authentication Device.
3.
If the Authentication Device does not receive a bootp response in 10 seconds or less, it will sleep
for a period of time (up to 3 times, then devices will go to offline mode) and then send the bootp
request again (i.e. goes back to step 1.)
•
for a period of time (up to 3 times, then devices will go to offline mode) and then send the bootp
request again (i.e. goes back to step 1.)
•
The sleep times between bootp requests increase based on the sequence of times indicated
below until the longest delay is reached (22 seconds) and the time is set back to the last
value reached and then the time is reset to the shortest delay (.15s).
below until the longest delay is reached (22 seconds) and the time is set back to the last
value reached and then the time is reset to the shortest delay (.15s).
•
Sleep times = .15 s, .8s, 2s, 3.2s, 5.6s, 12s, 22s
4.
If a bootp response is received by the Authentication Device, the device starts a socket server
(TCP) and waits for a client (one client connection only) to connect.
(TCP) and waits for a client (one client connection only) to connect.
5.
If a connection is not made with 4 minutes the Authentication Device will reset and the procedure
starts again from step 1.
starts again from step 1.
6.
Once a connection is successfully established the Authentication Device waits for a request from
the server (DCE) and the boot procedure ends.
the server (DCE) and the boot procedure ends.
7.
In offline mode, Xerox Secure Access devices will try to create connection with the server by
sending bootp every 30 seconds.
sending bootp every 30 seconds.