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 c ontains bad CRC, is
greater than the maximum length, or violates the li nk level protocol.
When invalid LAPD frame errors are reported, the ‘‘Invalid LAPD Frame
Error Counter Test’’ should be executed to determine if the c ondition has
cleared. When bus parity errors are repor ted, the ‘‘LANBIC Receive Parity
Error Counter Test’’ should be performed to determine if th e condition has
cleared. Execution of the Packet Interfac e Test should be performed if this
problem persists to verify the in tegrity of the circuit pac k. If the Packet
Interface Test passes, then the repair proced ure for the packet bus shoul d
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 nu mber of utilized buffers on the bo ard exceeds
a specified threshold .
The error types associated with co ngestion are defined as follows:
See description of ‘‘Congest ion Query Test’’ for correct repair procedure to
follow.
n. This error is reported when the call con trol signaling link fails or when the
Link Status Test fails for an X.25 Packet Gateway circuit pack. The call
control signaling link is c onsidered failed when it is d isconnected at the
link level and cannot b e reconnected quic kly. If the link cannot be
reconnected qui ckly, a MINOR off-board alarm is raised against the circuit
pack. This failure may be due to circuit pack prob lems, packet bus
problems, or pac ket interface circuit pac k problems.
o. A critical failure has been d etected in the Packet Bus interfac e of the
circuit pack. The switc h resets the circuit pack up on the report of one of
these errors. If two of these errors are received in 15 minutes, a MINO R
alarm is raised on the circ uit pack. Try clearing the alarm by exec uting the
reset board UUCSS command. The circuit p ack should be rep laced if this
alarm cannot be resolved.
p. The circuit pack is hyperactive (flooding the switch with messages sent
over the control channel) and i s 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-BOA RD.
2305: Invalid LAPD frame received
2306: Parity error detected on received frame
2817: Utilized buffers have exceeded high buffer mark
2819: All buffers exhausted