Glossary
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CSX200 Family User’s Guide
OSI —
Open System Interconnection. An international standard developed by ITU (formally
CCITT) and ISO (International Organization for Standardization) to facilitate data networking
multi-vendor interoperability. The OSI Reference Model defines seven layers, each providing
specific network functions.
Packet —
A group of data that includes a header and usually user data for transmission through a
network.
Ping (Packet Internet Groper) —
An echo message, available within the TCP/IP protocol suite,
sent to a remote node and returned; used to test the accessibility of the remote node.
PPP (Point-to-Point Protocol) —
A Data Link layer protocol that provides asynchronous and
synchronous connectivity between computer/network nodes. Includes standardization for security
and compression negotiation.
Q.921 —
ISDN Data Link layer specification for the user-to-network interface.
Q.931 —
ISDN specification for call set-up and signaling on ISDN connections.
RFC —
Request for Comment. Documentation describing Internet communications
specifications (e.g., Telnet, TFTP). Often these RFCs are used to achieve multi-vendor
interoperability during implementation.
RJ11 —
Standard 4-wire connectors for telephone lines.
RJ45 —
Standard 8-wire connectors used for ISDN lines and 10 BASE-T connections.
RIP (Routing Information Protocol) —
Protocols used in IP and IPX for broadcasting open path
information between routers to keep routing tables current.
Routing —
A Network layer function that determines the path for transmitting packets through a
network from source to destination.
RS-232 —
EIA standard specifying the physical layer interface used to connect a device to
communications media.
Serialization Frames —
Frames sent out by servers under IPX to check whether illegal copies of
NetWare are in use on the network.
Service Advertising Protocol —
Protocol used in IPX for broadcasting information about
services available on the network, such as file servers, CD-ROM drives and modem pools.
Summary of Contents for CSX200 CyberSWITCH
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