17 GLOSSARY |
|
TERM | DEFINITION |
LCP | Link Control Protocol establishes, configures, and tests data link |
| connections used by PPP. |
Latency | The time required for a signal to pass through a device. It is often |
| expressed in a quantity of symbols. |
LED | |
LNS | An L2TP network server is a termination point for L2TP tunnels |
| where PPP frames are processed and passed to higher layer |
| protocols. LNS can operate on any platform that terminates PPP. |
| The LNS handles the server side of the L2TP protocol. L2TP |
| relies only on the single media over which L2TP tunnels arrive. |
| The LNS can have a single LAN or WAN interface, but can |
| terminate calls arriving at any of the LAC’s full range of PPP |
| interfaces (asynchronous, synchronous, ISDN, V.120, etc.). |
| The LNS initiates outgoing calls and receives incoming calls. LNS |
| is analogous to a home gateway in L2F technology. |
loopback | A test that loops the transmit signal to the receive signal. |
| Usually, the loopback test is initiated on a network device. The |
| test is used to verify a path or to measure the quality of a signal |
| on that path. |
M |
|
TERM | DEFINITION |
MAC address | The Media Access Control address is a unique, |
| 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 a Label on the Bottom of the |
| SVG2500. You need to provide the HFC MAC address to the |
| Internet 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 |
| 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. |
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