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139 SBG1000 Wireless Cable Modem Gateway User Guide
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Configuration: Basic Gateway TCP/IP Wireless Print Server USB
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MAC address The Media Access Control address is a unique, 48-bit value permanently saved in ROM at the factory to
identify each Ethernet network device. It is expressed as a sequence of 12 hexadecimal digits
printed
on the SBG1000 rear panel. You need to provide the HFC MAC address to the cable service provider.
Also called an Ethernet address, physical address, hardware address, or NIC address.
MB One megabyte; equals 1,024 x 1,024 bytes, 1,024 kilobytes, or about 8 million bits.
Mbps Million bits per second (megabits per second). A rate of data transfer.
media The various physical environments through which signals pass; for example, coaxial, unshielded
twisted-pair (UTP), or fiber-optic cable.
MIB A management information base is a unique hierarchical structure of software objects used by the
SNMP manager and agent to configure, monitor, or test a device.
MHz Megahertz — one million cycles per second. A measure of radio frequency.
MPDU MAC protocol data unit (PDU)
MSDU MAC service data unit
MSO Multiple Systems Operator. A company that owns and operates more than one cable system. Also
called a group operator.
MTU The Maximum Transmission Unit is the largest amount of data that can be transmitted in one discrete
message on a given physical network. The MTU places an upper bound on the size of a message that
can be transferred by the network in a single frame. Messages exceeding the MTU must be fragmented
before transmission, and reassembled at the destination.
multicast A data transmission sent from one sender to multiple receivers. See also broadcast and unicast.
mW milliwatts