Method and system for realizing timestamp synchronization of active and standby optical line terminals
A technology of optical line terminal and time stamp, applied in time division multiplexing system, selection device of multiplexing system, transmission system, etc., can solve problems such as not supporting holdover function, ONU disconnection, reducing sensitivity, etc. , to achieve the effect of avoiding offline
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[0032] The basic idea of the present invention is: the active OLT synchronously sends the RTT value of itself and all online ONUs to the standby OLT; the standby OLT selects the reference ONU, after receiving the MPCP protocol frame of the reference ONU, according to the time in the MPCP protocol frame Stamp and the RTT value of the active OLT and reference ONU to set the value of the local time stamp counter.
[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] The present invention realizes the method for synchronizing the time stamp of the active and standby OLT, such as figure 2 As shown, the method includes the following steps:
[0035] Step 201: The active OLT sends the RTT values of itself and all online ONUs synchronously to the standby OLT;
[0036] Specifically, the active OLT calculates the RTT values of itself and all online ONUs according to the received MPCP prot...
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