ZyXEL P-971M Bedienungsanleitung PDF herunterladen (Seite 39)

P-971M User’s Guide

Chapter 4 SNMP Event Log 38

Your P-971M attempted to download its configuration file from the TFTP server specified by

the DHCP server, but the TFTP server replied that it could not find the requested file.

ToD request sent - No Response received (Warning)

Your P-971M sent a request to the time-of-day (ToD) server specified by the DHCP server,

but it did not receive a reply within the specified timeout period. Your P-971M defaults to

setting its onboard clock to midnight on January 1, 1970. Your P-971M can now proceed with

the registration process without receiving a ToD response, but will continue trying to contact

the ToD server every 5 minutes until it receives a valid response.

ToD Response received - Invalid data format (Warning)

Your P-971M received a reply from the ToD server that was specified by the DHCP server.

The reply from the ToD server was either an empty datagram or it contained invalid data (the

ToD server should send a reply that contains only one 32-bit number that indicates the number

of seconds since midnight on January 1, 1900). Please refer to RFC 868, Time Protocol for

additional information. The DOCSIS specifications do not allow the use of the Network Time

Protocol (NTP) or Simple Network Time Protocol (SNTP) ToD servers to set your P-971M’s

system time.

UCC- REQ received with invalid or out of range US channel ID (Error)

Your P-971M has received an Upstream Channel Change Request (UCC-REQ) message from

your cable operator’s CMTS that contains an upstream channel ID that is either invalid or out

of range.

UCC- REQ received unable to send UCC-RSP, no TX opportunity (Error)

Your P-971M has received an Upstream Channel Change Request (UCC-REQ) message from

your cable operator’s CMTS, but could not reply with an UCC Response message (UCC-RSP)

because it could not obtain a transmit timeslot.

US channel wide parameters not set before Burst Descriptors (Critical)

Your P-971M has received an Upstream Channel Descriptor (UCD) message from the CMTS,

but it did not set the channel and symbol rate parameters before beginning the set of TLVs

(Type Length Value) that specify the burst descriptors for the upstream channel. TLVs are an

encoding for three fields: the first field is the type of element, the second field is the length of

the element, and the third filed is the value of the element.

UCD & SYNC valid - NO MAPS for this channel (Critical)

Your P-971M has received valid Upstream Channel Descriptor (UCD) and SYNC messages

from the CMTS, but the upstream channel that is specified in the UCD does not offer your P-

971M any MAP (one slot of the Time Division Multiplexing) minislots in which to transmit.

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ZyXEL P-971M Bedienungsanleitung Seite 39