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WCM1100 / WCM3100 / WCM-Serial / LHM1000 / LVM2000 User Manual
76-02-082 Rev N
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5.9.1.6.3 OL, Outside Loop
When Phy Loops are enabled, an Outside loop (Loop transmit back to receive) may be
applied to the WAN port.
Note, due to the MAC Address Filtering table if a loop is applied and test traffic using a
destination MAC address which is already in the table will result in packets being
discarded rather than looped. In order to test with the OL applied, unknown destination
unicast, or multicast addressing must be used.