Symmetricom SyncServer S100 User Manual page 45

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3. 3.
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n n
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Symmetri etricom com reco recomme mmends
set settin ting g is is mos mostly tly a a "c "comp
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ree fo foll llowi owing ng st stag ages es of of op opera
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ss of of All All Ref Refere erenc nces es
: : Upon Upon st start artin ing, g, be befor
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mon n rep mo report orts s to to po pote tenti ntial al NTP
11 11 an and d st stra ratu tum m to to 16 16. .
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Typi Typical cal Ope Operatio ration n
in indi dica cato tor r an and d st strat ratum um nor norma
(u (usu sual ally ly 00 00 - - no no al alar arm) m). . St Stra ratu tum m re repo port rts s th the e s s tr trat atum
(us (usua uall lly y 1 1 thr throug ough h 3).
tem pee tem peer r
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With With
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n n
th the e s s am ame e asthe asthey y we
th the e un unch chang anged ed, , bu but t th the e
gradual grad ually ly dec decreas reases es to to zero
With With
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n n
the the
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th they ey di did d du duri ring ng in in th the e
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resume umes s Typic Typical al Ope Operation
Gi Give ven n a a po pool ol of of NTP NTP as asso soci ciat atio ions ns fro
ch chron roniz izes es wit with h th the e bes best t on one, e, and
associations. associations.
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Server er wit Serv with h bet bette ter r ti timi ming ng ac accu curac
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multicastcli multicastclient ent associations. associations.
Als Also o se see e
NTP Daemon Status NTP Daemon Status
(o (on n pa page ge 36 36), ),
ING - Holdover ING - Holdover
133). 133).
99 997-0 7-0152 1520-0 0-03 3 Rev Rev. . A A ..........................................................................
guration, , clic click k the the RESTAR RESTART T button
NTP da daem emon on res restar tarts ts, , it its s se serv rvic ices es are
wing g al alarm arm ev even ents ts: : NTP NTP Stra
ermin ine e whet whethe her r the the NTP NTP da daem
nds kee keepin ping g the the def defaul ault t
ompati atibil bility ity" " set settin ting g for
NTS-200 00. .
erati tion on, , th the e
NTP - Prefs NTP - Prefs
fore e sy sync nchro hroni nizi zing ng wit with h an any y NTP
NTP cl clie ient nts s th that at it it is is un unsy sync nchro
hroni nizi zing ng to to an an NTP NTP as asso soci ciat atio ion n th the e NTP
mall lly. y. Lea Leap p in indi dica cator tor rep report
um of of th the e NTP
3).
NTP da daem emon on ca cann nnot ot ge get t th the e ti time
( (Fac Factory tory Defau Default) lt) The
were re i i n n th the e
Typical Typi cal Ope Operatio ration n
refe referen rence ce tim time e st stamp amp
zero. .
, , if if th the e es esti tima mate ted d ti time me er erro ror r ex exce ceed eds s th the e
page, page, report rep orts s 16 16 and
over er stratum stratum
stage. stage.
Startup Startup
, , if if th the e NTP NTP dae daemo mon n sy sync nchro
ration . .
from m whi which ch to to ch choos
and doe does s not not req requi uire re
om whi which ch to to ch choo oos s e, e, an an NTP
racy y an and d st stab abil ilit ity y tha than n it itse self lf, , if if Ov
daemo mon n ca can n get get ti time me fro from m a a se serv rver,
(o (on n pa page ge 16 16), ),
TIMING TIM
(o (on n pa page ge 12 128) 8), , an and d
Leap Indicator Leap Indicator
..........................................................................
button to to put put the the new con- new con-
are te temp mpora oraril rily y una
Stratum tum Cha Chang nge, e, NTP NTP Sys
emon on, , onc once e sy sync nchro hroni nize zed, d, ca can n
set settin ting g bel
Stand Standard ard NTP Rul NTP Rules es
for cus custom tom sy syste stems ms bui built lt arou
se sett ttin ings gs onl only y ap appl ply y dur
NTP as asso soci ciat atio ions ns, , th the e NTP
hroni nize zed d by by se sett ttin ing g le leap ap in indi dica cato tor r to to
NTP dae daemo
orts s whe whethe ther r a a le leap ap ev even ent t is is pen
NTP da daem emon on re rela lati tive ve to to th the e
me fr from om an any y as asso soci ciat atio ion: n:
The and and
stratum stratum leap leap indi indicato
stage. sta ge. The The
system sys tem peer peer
is isn't n't up upda dated ted an and d th the e
Ti Time me Erro
and
leap indi leap indicato cator r
hroni nize zes s wit with h an an NTP NTP as asso soci ciati ation on
oose, e, an an NTP NTP cl clie ient nt ty typi pica call lly y sy syn- n-
to to eli elimin minate
Ov Override erride Behav Behavior ior
NTP c c li lien ent t ma may y re reje ject ct a a Sy
Overri erride de Beh Behav avio ior r is is en enabl
er, pe peer, er, bro broad adca cast stcl clie ient nt, , an and d
(o (on n pa page ge 34 34), ),
ING - HW Clock - HW Clock
Stratum Stratum
Page ge 33 33 Pa
NTP - - Pr Pre e f f s s NTP
unava vail il- -
System tem Pee Peer r
below. ow. The The
around nd leg leg- -
durin ing g th the e
NTP dae dae- -
mon n us uses es le leap ap
pendi ding ng
sys- sys-
remain remain
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remains remains
statistic statistic
reach reach
on on
Error r Li Limi mit t
rep report orts s 11 11, , as as
ate poo poor r
Sync nc- -
abled. ed.
TIM- TIM-
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