RE: FW: EPON MIB comments (eponDeviceRemoteMACAddressLLIDControl)

"Glen Kramer" <[email protected]>
Newsgroups gmane.ietf.hubmib
Organization Teknovus
Message-ID <[email protected]>
[GK] eponDeviceRemoteMACAddressLLIDControl - "Indicates and controls the
resetting of the LLID MAC address log. Setting this object to none(1) has no
action resetLog(2) empties the LLID MAC address log. All data is deleted.
Setting it to useDefaultReporting(3) returns all entries priorities to their
factory-default reporting. Reading this object always returns
useDefaultReporting(3)." The description of this object seems to match some
proprietary EPON device. In the 802.3ah standard, there is no provision of
whether to keep LLID MAC address log. It is not clear, what does it mean
"returns all entries priorities to their factory-default reporting", since
there is no specification for either "entries" or "factory-default
reporting". This object should be removed.

[LK] The OLT and ONUs of an EPON device serves as a distributed virtual
switch where the LLIDs represent bridge ports. This model is behind the
point to point emulation mechanism of clause 65 and of the whole LLID
concept. A bridge have a MAC address to port address table and this table
here serves for exactly the same purpose. It is not a proprietary
implementation. The eponDeviceRemoteMACAddressLLIDControl is a control
attribute for resetting this Table. As a table is a manageable entity I
think such an object is needed. The useDefaultReporting(3) category is a
common option for such attributes as a default setting for tables -
Implementation is according to Vendors preference. I have no special
suggestion for the default value. If people will feel more comfortable I can
remove useDefaultReporting(3) and return in the reading none(1).

[GK] There is no document defining what is "LLID MAC address log". The
phrase "The OLT and ONUs of an EPON device serves as a distributed virtual
switch where the LLIDs represent bridge ports" assumes a particular
implementation.
LLIDs do not represent bridge ports. LLID represent virtual links.  These
links may or may not be connected to a bridge at the OLT. The
eponDeviceRemoteMACAddressLLIDControl attribute refers to an address table
in the bridge and has nothing to do with EPON. Therefore, it should be moved
to the bridge MIB.

Regards,
Glen
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