Avaya DEFINITY Server CSI, Руководство по обслуживанию, Страница: 1474 / 1930

Maintenance Objects
1474
Issue 5 October 2002
Private Looparound Tests (#885)
This test requests the Packet Interface to execute its two private looparound tests:
■
Level 2 looparound
■
Broadcast path looparound
These tests verify the health of the Packet Interface’s translation RAM, inward and
outward bound data paths, parity indications and CRC calculations, the Level 2
processing firmware, and the C-LAN’s Bus Bridge operation, including C-LAN
TDM Bus and Packet Bus access.
■
Level 2 (LAPD) Link Looparound
LAPD is a link level protocol that is used for all system links. This test
verifies the health of the processing of these links.
■
Broadcast Link Looparound
Each ISDN BRI port has two associated broadcast signaling links, one for
call control and one for maintenance and management. Since these links
have separate routing circuitry from the Level 2 Looparound, this test
forces a CRC error to verify the CRC hardware associated with the
broadcast data path.
These tests are also run as part of the reset tests, and the PKT-INT firmware
automatically executes them periodically in the background. If the Level 2
looparound test fails as a background test, a fatal error message will be sent to
the Packet Interface maintenance software and the Packet Interface will be put in
the out-of-service state. Therefore, it is expected that the repair procedures
associated with Abort Code 1137 (out-of-service) would normally be followed
when failures with the Level 2 test occurs.
1793 FAIL The Flash memory checksum test failed. The Packet Interface may still be
operational but it will fail if a reset is executed.
1. Retry the command.
2. If the same error code occurs, replace the TN2402/TN798 Processor
circuit pack at a time that would cause the least disruption of service. The
Packet Interface is still functional but should be replaced since it may not
operate after a system reboot and it will enter a fatal fault state if it is reset
for other reasons.
PASS The Packet Interface’s firmware is in a proper state. If problems are still
reported on the Packet Interface, check for errors on the Private Looparound
test (#885) and Maintenance Looparound Test (#886).
Table 391. TEST #884 Memory Checksum Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page