DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1198PGATE-BD (Packet Gateway Circuit Pack)
9
An Invalid LAPD frame error occurs if the frame contains bad CRC, is
greater than the maximum length, or violates the link level protocol.
When invalid LAPD frame errors are reported, the ‘‘Invalid LAPD Frame
Error Counter Test’’ should be executed to determine if the condition has
cleared. When bus parity errors are reported, the ‘‘LANBIC Receive Parity
Error Counter Test’’ should be performed to determine if the condition has
cleared. Execution of the Packet Interface Test should be performed if this
problem persists to verify the integrity of the circuit pack. If the Packet
Interface Test passes, then the repair procedure for the packet bus should
be consulted.
m. These errors occur when the Packet Gateway reports that it is congested
or the ‘‘Congestion Query Test’’ fails. A Packet Gateway enters a
congested state when the number of utilized buffers on the board exceeds
a specified threshold.
The error types associated with congestion are defined as follows:
See description of ‘‘Congestion Query Test’’ for correct repair procedure to
follow.
n. This error is reported when the call control signaling link fails or when the
Link Status Test fails for an X.25 Packet Gateway circuit pack. The call
control signaling link is considered failed when it is disconnected at the
link level and cannot be reconnected quickly. If the link cannot be
reconnected quickly, a MINOR off-board alarm is raised against the circuit
pack. This failure may be due to circuit pack problems, packet bus
problems, or packet interface circuit pack problems.
o. A critical failure has been detected in the Packet Bus interface of the
circuit pack. The switch resets the circuit pack upon the report of one of
these errors. If two of these errors are received in 15 minutes, a MINOR
alarm is raised on the circuit pack. Try clearing the alarm by executing the
reset board UUCSS command. The circuit pack should be replaced if this
alarm cannot be resolved.
p. The circuit pack is hyperactive (flooding the switch with messages sent
over the control channel) and is taken out of service when a threshold
number of these errors are reported to the switch. It may exhibit one or
more of the following symptoms:
1. Tests run on the ports of this circuit pack return NO-BOARD.
2305: Invalid LAPD frame received
2306: Parity error detected on received frame
2817: Utilized buffers have exceeded high buffer mark
2819: All buffers exhausted
