It comprises a dot3EponMauTable, hosting the
managed parameters of the EPON physical layer, and a dot3EponMauType type
definition.
Additionally, there is a MIB module specific for EPON devices which contains objects
that can be used to manage any Ethernet device, such as a bridge, with one or more
EPON OLT interfaces. The MIB eponDeviceRemoteMACAddressLLIDTable contains a
table mapping ONU MAC addresses to LLIDs addresses for the given EPON instance,
thus storing the physical ONU port addresses??”not the addresses of the end stations
that may be attached to the subscriber ports of the device. The aforementioned ONU
addresses are learned from incoming MultiPoint Control Protocol(MPCP) messages and
are updated continuously during standard operation.
In an EPON-based bridge, a similar table must be present to store the associations
between the MAC addresses of the end stations attached to the ONUs and the LLIDs,
which need to be used to reach the particular Ethernet interfaces. A normal bridge learns
associations between MAC addresses of the particular interfaces and given ports, though
here the generic bridge ports are replaced by the LLID entities.
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