ZyXEL Communications P-974H - V3.70, Руководство пользователя

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Chapter 3 Status
P-974H/HW Series User’s Guide
38
3.4.1 Event Log: Log Description
The following table describes the logs. Refer to DOCSIS 2.0 for additional
information on SNMP status messages for cable modems.
Table 9 Event Log: Log Description
LOG NAME SEVERITY DESCRIPTION
DHCP Warning -
Non-critical field
invalid in
response Critical The ZyXEL Device has received a response to its DHCP request from
the cable operator’s CMTS, but the responding DHCP server did not
include all of the required fields in the message. This message might
also appear if one of the required fields in the DHCP message
contains an invalid value. Reconfigure the DHCP server so that it
sends all of the required fields.
DHCP ERROR -
The DHCP
response does
not contain all of
the required
fields or the PS
(Portal Services)
is unable to
determine
provisioning
mode. Critical The ZyXEL Device has received a response to its DHCP request from
the cable operator’s CMTS, but the responding DHCP server did not
include all of the required fields in the message. Please refer to
appendix C of the DOCSIS 1.0 RF specification, appendix D of the
DOCSIS 1.1 RF specification, appendix D of the DOCSIS 2.0 RF
specification, and RFC 868 for further information. Reconfigure the
DHCP server so that it sends all of the required fields.
SYNC Timing
Synchronization
failure - Failed to
acquire FEC
framing Critical When attempting to lock on to the downstream channel your ZyXEL
Device could not acquire forward error correction (FEC) framing.
SYNC Timing
Synchronization
failure - Failed to
acquire MAC
framing Critical Your ZyXEL Device attempted to lock on to the downstream channel
and was able to acquire forward error correction (FEC) framing, but
then failed to lock on to media access control (MAC) framing. Note
that this is not an ethernet MAC frametype.
SYNC Timing
Synchronization
failure, Acquired
FEC framing -
Failed to acquire
MPEG2 Sync Critical Your ZyXEL Device attempted to lock on to the downstream channel
and was able to acquire forward error correction (FEC) framing, but
then failed to lock on to the MPEG2 synchronization signal.
SYNC Timing
Synchronization
failure - Failed to
acquire QAM/
QPSK symbol
timing Critical Your ZyXEL Device could not lock on to the downstream channel’s
quadrature amplitude modulation/quadrature phase shift keying
(QAM)/(QPSK) signal.
SYNC Timing
Synchronization
failure - Failed to
receive MAC
SYNC frame
within time-out
period Critical Your ZyXEL Device was able to acquire the media access control
(MAC) framing initially, but subsequently failed to receive the MAC
SYNC frame within the specified timeout period. Note that this is not
an ethernet MAC frame type.