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• #30610 FollowTheORI nagyúr Peltár #30608

  Új Válasz 2015-01-23 15:59:24 #30610

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  válasz Peltár #30608 üzenetére

  "A Brief Aside on T3 and T4 Timeouts

  T3 and T4 timeouts occur during station maintenance and do provide insight to the health of a DOCSIS plant as well as diagnostics. The counters themselves are in the DOCSIS cable modems and start and stop at the beginning and end of the station maintenance process. The CMTS sends a MAP message to the cable modem instructing it to send a RNG-REQ to the CMTS, so the CMTS knows the message is coming. Once the cable modem transmits the RNG-REQ it starts an internal counter. If the cable modem does not receive a RNG-RSP in 200 msec it flags a T3 timeout. One can assume if the CMTS did not send the RNG-RSP it most likely did not receive the RNG-REQ due to upstream impairments, therefore T3 timeouts usually indicate upstream impairment.

  When the CMTS does not receive the RNG-RSP it will send a new MAP for another RNG-REQ. If again the RNG-RSP is not received another T3 timeout will be generated. Once a certain number of T3 timeouts or time is exceeded (typically about 15 T3 timeouts, but this is vendor-based), the cable modem will be forced to re-register and a T4 timeout error will be logged. A T4 timeout can indicate an upstream that is not passing traffic or even possible downstream problems. But most often a T4 timeout occurs when the MAP message for a RNG-REQ is lost in the downstream, which indicates potential downstream issues."

  Ezek szerint a vissziránnyal van valami baja... szűrők/splitterek meg ilyesmi jól vannak beszerelve?
  Vagy több modem zavarja egymást... ez mindenképp szerelős lesz.

  [ Szerkesztve ]

  Steam/Origin/Uplay/PSN/Xbox: FollowTheORI / BF Discord server: https://discord.gg/9ezkK3m

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