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Cabletron Systems HSIM-W6 User Manual

Page 253

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Chapter E: Glossary

HSIM-W6 User’s Guide 239

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 (SAP) —

Protocol used by IPX for broadcasting information

about services available on the network, such as file servers, CD-ROM drives and modem pools.

SNAP —

Sub-Network Access Protocol. An Ethernet or Token Ring frame type that adds

additional information to a data packet to allow for identification of the upper layer protocol the
packet is destined for.

SNMP —

Simple Network Management Protocol. A widely implemented Internet network

management protocol that allows status monitoring, getting/setting of parameters for configuration
and control of network devices, such as routers and bridges.

Split B Channels —

Each 64 Kbps ISDN B-channel can be used individually for a separate data

connection.

Spoofing —

Spoofing is a technique used to remove poll and update service frames from WAN

links while ensuring that the network continues to operate normally. Spoofing is employed to
minimize dial-up line connection time.

Subnet Address —

An extension of the Internet 32-bit addressing scheme that allows the

separation of physical or logical networks within the single network number assigned to an
organization. TCP/IP entities outside this organization have no knowledge of the internal
“subnetting.”

Subnet Mask —

A 32-bit internet protocol address mask used to identify a particular

subnetwork.

TCP/IP —

Transmission Control Protocol/Internet Protocol. Refers to a set of internetworking

protocols developed by the U.S. Department of Defense that define a two level layered approach
for interoperability. TCP provides a connection-oriented Transport layer ensuring end-to-end
reliability in data transmission. IP provides for Network layer connectivity using connectionless
datagrams.

Telco Cloud —

The “cloud” of switched virtual connections.

TELNET —

Internet standard protocol for remote terminal emulation that allows a user to

remotely log in to another device and appear as if directly connected.