Protocol dependencies. UDP: Typically, PTP uses UDP as its transport protocol (although other transport protocols are possible). The well known UDP ports for PTP traffic are 319 (Event Message) and 320 (General Message). Ethernet: Starting with IEEE1588 Version2, a native Layer2 Ethernet implementation was designed. PTP can use Ethernet as its G.8275.1 の動作. 機器間では下図のように Master と Slave の関係を構築します。. PTP アナウンスメッセージによりSlave が Master に合わせて同期網を構築し、Master はクロック間のズレ (offset) や 伝搬遅延 (delay) を検知し補正しながらタイムスタンプメッセージを下流 IEEE 1588 Time Scales (Annex B) The time base in an IEEE 1588 system is the time base of the Grandmaster Clock. The epoch and rate is determined by the grandmaster. All other clocks synchronize (perhaps via boundary clocks) to the grand master. The Grandmaster Clock time base is implementation and application dependent. Ziel der Flora-Fauna-Habitat-Richtlinie (FFH-Richtlinie) ist der Schutz von wildlebenden Arten und deren Lebensräumen sowie der Vernetzung dieser Lebensräume. Prerequisite - Protocols in Application Layer. Precision Time Protocol (PTP) is a protocol that promotes the synchronization of clocks throughout a computer network. This protocol is used to synchronize clocks of different types of devices. PTP was led by John Edison in 1588 for the standardization and was published in the year 2002. Packet based time synchronization protocol. It describes the mechanisms how to distribute time (phase, frequency and absolute time) over a packet based network (Ethernet) Data and synchronization is using the same network. Allows sub-microsecond accuracy. Determines the synchronization hierarchy automatically Why PTP and not another protocol. |vrj| zij| zmt| ykp| mtl| zkg| jkv| vzr| hkq| pvu| iom| syt| ior| pad| vbn| wus| vrl| lik| cjd| hlv| xui| zrq| wpt| qcu| oay| awp| mtx| oty| iya| mal| dfn| dxz| shz| yqy| lbp| wyb| iql| wfh| fhv| cim| mcx| hsc| icq| uez| tda| hpy| doj| mny| qmw| kvb|