Clarion M10 Series Manual do Utilizador Página 19

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C-SPEC CORPORATION WIRELESS PRODUCTS
CLARION MerLAN M10 17
address checking is enabled, to determine whether an ACK is required (or
was received). The destination address of each uploaded AUI frame is
checked to determine if the frame was intended to be used to configure the
M10.
M10 Address
Each M10 is assigned a unique 48-bit IEEE 802 address at the factory in a
similar manner to any Ethernet card. The number serves the purpose of
uniquely labeling the M10 within network address space, and it also doubles
as a manufacturing serial number.
Config Address
An M10 can be configured to recognize management data as frames
addressed to the Clarion NULL address (00606F000000) if there is only a
single M10; for M10s to which configuration frames can be routed via a wired
network, the M10 must be set to accept only management frames specifically
addressed to the M10 via its specific M10 Address.
RF Address
The retransmission protocol uses an acknowledgment (ACK) sent from the
receiving M10 to the transmitting M10 to indicate that the frame
transmission was successful. Each M10 uses an RF Address which is
compared to the destination address of a received frame to determine that the
frame was intended for that M10, hence that it should send an ACK if the
frame was received intact. An M10 awaiting an ACK compares the
destination address of the ACK it receives to its RF Address. No filtering of
traffic is performed by the M10; the RF Address is used only to operate the
retransmission protocol. The M10 should use as its RF Address the address
of a device attached to the AUI port. The RF Address can be designated by
user configuration; otherwise it is learned by the M10 from the first frame
offered to the M10 after power-up. Power-up learning of the RF Address is
consistent with M10 attachment to a single Ethernet card. Configuring the
M10 to retain a specific RF Address for traffic purposes is required, for
example, when the M10 is attached to a network traffic source/sink and also
to a network-monitoring device whose address might be unintentionally
learned during power-up. When designated by user configuration, the M10
could have its RF Address set to its unique M10 Address. This supports
bridging, where the attached bridge has binding address information
sufficient to direct frames to specific M10s.
FIRMWARE UPGRADE
In the event that new MerLAN M10 firmware is released and needs to be
installed, you will receive a floppy disc with the necessary programs and files
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