PairGain 500L, Руководство пользователя

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PRELIMINARY
78 Megabit Modem 500L Installation Manual
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RFC Request For Comment is a series of notes that contain surveys, measurements, ideas,
techniques, and observations, as well as proposed and accepted TCP/IP protocol
standards. RFCs are available on the Internet.
RIP Routing Information Protocol allows routers to update the routing tables
automatically (for example with information such as how many hops between
destinations). The version of RIP you select for the session must match the version
supported by the service provider. Versions RIP1 and RIP-1 compatible are used for
broadcast. Version RIP 2 is used for multicast.
SEF Severely Errored Frames is the incoming signal has at least four consecutive errored
framing patterns.
SES Severely Errored Seconds is the seconds during which more than 2,500 bipolar errors
are detected on the line.
session The time during which two computers maintain a communication connection. An
example is a connection configured between the Megabit Modem 500L and the
service provider.
SNMP Simple Network Management Protocol is a protocol that specifies how to send
information between a NMS and managed devices on a network. The managed
devices run a program called an agent. The agent interprets SNMP request and
responds to them. SNMP is used to set device configurations, read device
configurations or read the device status.
Spanning Tree A bridging protocol that detects and prevents loops from occurring in a system
containing multiple bridges.
subnet mask A type of IP address that allows a site to use a single IP address for multiple physical
networks.
TCP Transmission Control Protocol is a transport protocol used to map inbound traffic
(from a remote IP address) to an internal (LAN) IP address. Establishes connection
with remote user before data transmission.
TCP/IP Transmission Control Protocol/Internet Protocol is a protocol used for
communications between computers over networks and the internet.
TFTP Trivial File Transfer Protocol is a protocol used to download card images or other files
from an external TFTP server to the NVRAM of any installed cards, or to upload files
from an installed card to an external TFTP server.
trap receivers PCs configured to receive SNMP traps (messages).
traps Autonomous, interrupt-driven, SNMP messages sent from a managed node to a
network management station to indicate that an event has occurred.
UAS UnAvailable Seconds is the number of seconds during which the line is unavailable.