63
class
class-value
: Specifies the time class of the Bits clock, in the range of 0 to 255. A numerically
smaller value indicates a higher time class.
shows the description of time classes (those not
listed are reserved by the protocol).
Table 20 Time class description
Time class (in decimal
format)
Description
6
The clock node synchronizes its time to the master reference time source.
PTP assigns a time table to the clock node. A clock node with time class 6
cannot become a member clock of any other clocks in the domain.
7
The former time class is 6. The clock node cannot synchronize its time to a
time source. It enters the reappointment mode and meets the reappointment
conditions. PTP assigns a time table to the clock node. A clock node with
time class 7 cannot become a member clock of any other clocks in the
domain.
13
The clock node synchronizes its time to a time source. ARB assigns a time
table to the clock node. A clock node with time class 13 cannot become a
member clock of any other clocks in the domain.
14
The former time class is 13. The clock node cannot synchronize its time to a
time source. It enters the reappointment mode and meets the reappointment
conditions. ARB assigns a time table to the clock node. A clock node with
time class 14 cannot become a member clock of any other clocks in the
domain.
52
The clock node with time class 7 becomes optional clock A because it does
not meet the reappointment conditions. A clock node with time class 52
cannot become a member clock of any other clocks in the domain.
58
The clock node with time class 14 becomes optional clock A because it does
not meet the reappointment conditions. A clock node with time class 58
cannot become a member clock of any other clocks in the domain.
187
The clock node with time class 7 becomes optional clock B because it does
not meet the reappointment conditions. A clock node with time class 187 can
become a member clock of another clock in the domain.
193
The clock node with time class 14 becomes optional clock B because it does
not meet the reappointment conditions. A clock node with time class 193 can
become a member clock of another clock in the domain.
248
Default time class value.
255
Clock node operating in
slave-only
mode.
time-source
ts-value
: Specifies the clock attribute value, in the range of 0 to 255.
the description of the GM attribute values (those not listed are reserved for the protocol).
Table 21 GM attribute value description
GM attribute values (in
hexadecimal format)
Description
10 Atomic
clock.
20 GPS.
30 Terrestrial
radio.
40 PTP.
50 NTP.
60 Handset.