Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 346
Switch RX frame MAX size, CPU RX frame MAX size
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Transition Networks SISPM1040-3xxx-L Web User Guide Unicast MAC : This is only used if NOT configured to all zero. This will be used as the LBM PDU unicast MAC. This is the only way to configure Loop Back to-wards a MIP. To Send : The number of LBM PDU to send in one loop test. The value 0 indicate infinite transmission (test behavior). This is HW based LBM/LBR and Requires VOE. Size : The LBM frame size. This is entered as the wanted size (in bytes) of a un-tagged frame containing LBM OAM PDU - including CRC (four bytes). Example when 'Size' = 64=> Un-tagged frame size = DMAC(6) + SMAC(6) + TYPE(2) + LBM PDU LENGTH(46) + CRC(4) = 64 bytes. The transmitted frame will be four bytes longer for each tag added - 8 bytes in case of a tunnel EVC. There are two frame MAX sizes to consider. Switch RX frame MAX size: The MAX frame size (all inclusive) accepted on the switch port of 10240 Bytes CPU RX frame MAX size: The MAX frame size (all inclusive) possible to copy to CPU of 10240 Bytes Consider that the Peer MEP must be able to handle the selected frame size. Consider that In case of SW based MEP, the received LBR PDU must be copied to CPU. A Warning will be given if selected frame size exceeds the CPU RX frame MAX size. Frame MIN Size is 64 Bytes. Interval : The interval between transmitting LBM PDU. In 10ms. in case 'To Send' != 0 (max 100 - '0' is as fast as possible) In 1µs increments. in case 'To Send' == 0 (max 10.000)", Loop Back State Transaction ID : The transaction id of the first LBM transmitted. For each LBM transmitted the transaction id in the PDU is incremented. Transmitted : The total number of LBM PDU transmitted. Reply MAC : The MAC of the replying MEP/MIP. In case of multi-cast LBM, replies can be received from all peer MEP in the group. This MAC is not shown in case of 'To Send' == 0. Received : The total number of LBR PDU received from this 'Reply MAC'. Out Of Order : The number of LBR PDU received from this 'Reply MAC' with incorrect 'Transaction ID'. Link Trace Enable : Link Trace based on transmitting/receiving LTM/LTR PDU can be enabled/disabled. Link Trace is automatically disabled when all 5 transactions are done with 5 sec. interval - waiting 5 sec. for all LTR in the end. The LTM PDU is always transmitted as Multi-cast Class 2. Priority : The priority to be inserted as PCP bits in TAG (if any). Peer MEP : This is only used if the 'Unicast MAC' is configured to all zero. The Link Trace Target MAC will be taken from the 'Unicast Peer MAC' configuration of this peer. Unicast MAC : This is only used if NOT configured to all zero. This will be used as the Link Trace Target MAC. This is the only way to configure a MIP as Target MAC. Time To Live : This is the LTM PDU TTL value as described in Y.1731. This value is decremented each time forwarded by a MIP. Will not be forwarded reaching zero. Link Trace State Transaction ID : The transaction id is incremented for each LTM send. This value is inserted the transmitted LTM PDU and is expected to be received in the LTR PDU. Received LTR with wrong transaction id is ignored. There are five transactions in one Link Trace activated. Time To Live : This is the TTL value taken from the LTM received by the MIP/MEP sending this LTR - decremented as if forwarded. 33763 Rev. G https://www.transition.com Page 346 of 496