IBM Heritage user manual Class A, B, and C networks, Client, Community strings, Console port

Heritage Series ADSL Bridge/ Router Appendix A-9

adjacent segment is passed across the bridge. A bridge operates at Layer 2 of the OSI reference model.

CHAP

Challenge Handshake Authentication Protocol. A security protocol supported under Point-to-Point Protocol (PPP) used to prevent unauthorized access to devices and remote networks. Uses encryption of password, device names, and random number generation.

Class A, B, and C networks:

The values assigned to the first few bits in an IP network address determine which class designation the network has. In decimal notation, Class A network addresses range from 1.X.X.X to 126.X.X.X, Class B network addresses range from 128.1.X.X to 191.254.X.X, and Class C addresses range from 192.0.1.X to 223.255.254.X.

Client

An intelligent workstation that makes requests to other computers known as servers. PC computers on a LAN can be clients.

Community strings

Sequences of characters that serve much like passwords for devices using SNMP. Different community strings may be used to allow an SNMP user to gather device information or change device configurations.

Console port

Device used by the network administrator to configure and monitor the Modem. The console port employs an RS232 interface. Command Line Interface are used on the console port.

DHCP

Dynamic Host Configuration Protocol - Service that provides network information (such as IP addresses, masks, domain names) to PCs and other clients automatically.

DNS

Domain Name Service - Transmission Control Protocol/Internet Protocol (TCP/IP) service which translates a name that a person can remember into an IP address that a computer can use.

DTE

Data Terminal Equipment - Term defined by standards committees, that applies to communications equipment, typically personal computers or data terminals, as distinct from other devices that attach to the network, typically modems.