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Problem DescriptionAfter a frontline engineer sets up an N2PQ1 single-board port inner loop on an OSN2500 R8C02 version network element, the loopback is never automatically released, . The loopback was eventually lifted manually. Other line veneers can automatically release the loopback after it is set.
Warning Message:cfg-set-loop:7,1,inloop
51026 7 LOOP_ALM MN start 2011-08-11 20:27:26 None 0x01 0x00 0x01 0x00 0x00 0x00
ProcessingManually release the tributary single-board loopback.
Root CauseThe mainframe has been modified in R7 extreme later versions, and all branch circuit boards in R7 and later mainframe versions do not support unloopback. All line boards support automatic unloopback.
Recommendations and SummarySet the loopback within port one of single board 7by command :cfg-set-loop:7,1,inloop
You can use the following commands to query whether the ports that are currently in the loopback state can be automatically unlooped
:cfg-get-autoclearlist:
AUTOCLEAR-RECORD
OPTYPE BID PORT PATH
portloop 7 1 0
Form output mode, the corresponding fields are:
OPTYPE : Type to be auto-cleared
BID : Board number
PORT : Port number
PATH : Channel number
That means port 1 of veneer 7 can be auto-cleared for loopback
END
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