Nortel Networks NTNM13XKAB Uživatelský manuál stáhnout pdf (Strana 35)

Network Wide Backup & Restore Planning Guide Rel 1.0 Standard July 1999

5-1

TCP/IP Network Requirements 5-

This section provides a general description of ethernet networks, TCP/IP and

X.25 protocols and the requirements needed to support the operation of the

Network Wide Backup and Restore application with INM Broadband.

Ethernet

The ethernet protocol is a standard defined by the Institute of Electrical and

Electronics Engineers (IEEE) for communication networks. The IEEE

standard 802.3 defines the layer 2 functionality in the protocol stack shown

below.

Figure 5-1

OSI 7 Layer Protocol Stack

NM-00014(R5)

The characteristics of a 10-Base-T Ethernet network are:

• Maximum speed of 10 Mbits/sec

• Maximum number of 100 Ethernet devices per network

• Carrier Sense Multiple Access with Collision Detection (CSMA/CD)

media access control

Application

Presentation

Session

Transport

Network

Data Link

Physical

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Nortel Networks NTNM13XKAB Uživatelský manuál Strana 35