IBM 8239 Token-Ring Stackable Hub, Руководство по установке и эксплуатации

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permanently beacon wrapped and the Adapter Status is set to
BCN_THRES_ERROR. Once the Management Interface is in the permanently
beacon wrapped state, an administrator must re-enable the Management Interface’s
administrative_mode to re-insert the Management Interface into the stack ring; to
re-insert the Management Interface, issue the SET MANAGEMENT_INTERFACE
ADMINISTRATIVE_MODE DISABLE terminal interface command, followed by SET
MANAGEMENT_INTERFACE ADMINISTRATIVE_MODE ENABLE.
Ring In/Ring Out Connection (8239 Model 1 only)
When the beacon fault is determined to originate from the Ring In and/or Ring Out
connection on the 8239, the 8239:
¹
Wraps the faulty RI/RO
¹
Sends a RI/RO status trap to indicate the current state of the RI and RO. The
faulty connection has a status of WRAPPED. Refer to “Trap Processing” on
page 7-10 for details about sending the trap.
¹
Sets the status of the RI/RO to WRAPPED. The RI/RO status can be displayed
by issuing the DISPLAY WRAP_POINTS or DISPLAY RING_IO terminal
interface commands. The RI/RO status will also be displayed on the LCD of
any Model 1s in the stack. Refer to “Operational Codes” on page 5-15 for more
information.
¹
Sets the faulty RI/RO’s yellow status LED to on and turns the faulty RI/RO’s
green status LED off.
Once the RI/RO has been wrapped, the 8239 automatically keeps testing the
RI/RO connection and then unwraps the RI/RO connection when it determines that
there is a fault-free connection to the external device.
Within the 8239
The 8239 can determine if the beaconing fault is within the 8239. Such a fault can
occur if there is an 8239 failure.
In this case, the 8239 automatically resets itself. Any unsaved configuration
changes are lost. After the reset, the 8239 will not be operational if it failed its
diagnostics.
6-14
8239 Setup and User’s Guide