Alcatel Carrier Internetworking Solutions Switch/Router 사용자 설명서

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. The number of 

NTP

 timestamps received that the switch disallowed because 

the added time offset parameter appeared to be incorrect. This can occur if an 

NTP

 entity 

becomes unsynchronized and generates false timestamp information.

. The number of packets received where the version number of 

NTP

 was 

undefinable. This is usually caused by packet corruption.

. The number of packets received that 

NTP

 rejected because the packet 

information was incomplete.

. The number of 

NTP

 packets received that contained an unreadable request 

or information. This is usually caused by packet corruption.

If necessary, 

NTP

 adds or subtracts a second from the timestamps sent out on the network to 

correct for errors in time information. These modifications are called leap seconds. To display 
leap second information for the switch, enter the 

 command at the system prompt. A 

screen similar to the following is displayed:

The following section describes the fields displayed using the 

 command.

. The current status of the leap second monitor. There are four possible codes:

No warning.

Last minute has 61 seconds.

Last minute has 59 seconds.

Alarm condition (clock not synchronized)

. The number of leap seconds that occurred during the current day.

. The number of leap seconds that will occur in the current month.

. The number of leap bits set within the last hour.

. A leap interrupt occurs when the 

NTP

 algorithm examines the topol-

ogy of the network and determines if a leap second is needed (it may or may not be neces-
sary at the time of the interrupt). This counter displays seconds until the next interrupt.

. The time, in standard date notation, of the next leap interrupt after 

the most current leap interrupt is finished.

. The number of times a leap second has been added or subtracted.

. A scheduled leap second insertion more than a month away.