Value LAG_ID (\d+)
Value ADM (up|down)
Value OPR (up|down)
Value WEIGHTED (Yes|No)
Value THRESHOLD (\d+)
Value UP_COUNT (\d+)
Value MC_ACT_STDBY (N/A|active|standby)
Value LAG_NAME (lag-\S+)

Start
  ^Lag\s+Data\s*$$
  ^Lag-id\s+Adm\s+Opr\s+Weighted\s+Threshold\s+Up-Count\s+MC\s+Act/Stdby\s*$$
  ^\s+name\s*$$
  ^\d+\s+((up|down)\s+){2} -> Continue.Record
  ^${LAG_ID}\s+${ADM}\s+${OPR}\s+${WEIGHTED}\s+${THRESHOLD}\s+${UP_COUNT}\s+${MC_ACT_STDBY}\s*$$
  ^\s+${LAG_NAME}\s*$$
  ^\s*$$
  ^===+
  ^---+
  ^Total
  ^. -> Error
