ZyXEL Communications 2000W manual IP Addressing, IP Classes, Classes of IP Addresses

Page 109

Prestige 2000W_V2 User’s Guide

Appendix B

IP Subnetting

IP Addressing

Routers “route” based on the network number. The router that delivers the data packet to the correct destination host uses the host ID.

IP Classes

An IP address is made up of four octets (eight bits), written in dotted decimal notation, for example, 192.168.1.1. IP addresses are categorized into different classes. The class of an address depends on the value of its first octet.

Class “A” addresses have a 0 in the left most bit. In a class “A” address the first octet is the network number and the remaining three octets make up the host ID.

Class “B” addresses have a 1 in the left most bit and a 0 in the next left most bit. In a class “B” address the first two octets make up the network number and the two remaining octets make up the host ID.

Class “C” addresses begin (starting from the left) with 1 1 0. In a class “C” address the first three octets make up the network number and the last octet is the host ID.

Class “D” addresses begin with 1 1 1 0. Class “D” addresses are used for multicasting. (There is also a class “E” address. It is reserved for future use.)

Table 30 Classes of IP Addresses

IP ADDRESS:

 

OCTET 1

OCTET 2

OCTET 3

OCTET 4

 

 

 

 

 

 

Class A

0

Network number

Host ID

Host ID

Host ID

 

 

 

 

 

 

Class B

10

Network number

Network number

Host ID

Host ID

 

 

 

 

 

 

Class C

110

Network number

Network number

Network number

Host ID

 

 

 

 

 

 

Note: Host IDs of all zeros or all ones are not allowed.

Therefore:

A class “C” network (8 host bits) can have 28 –2 or 254 hosts.

A class “B” address (16 host bits) can have 216 –2 or 65534 hosts.

A class “A” address (24 host bits) can have 224 –2 hosts (approximately 16 million hosts).

Appendix B IP Subnetting

109

Image 109
Contents Prestige 2000WV2 Page Disclaimer CopyrightTrademarks Prestige 2000WV2 User’s GuideCertifications Federal Communications Commission FCC Interference StatementSafety Warnings Safety WarningsZyXEL Limited Warranty ZyXEL Limited WarrantyCustomer Support Customer SupportUnited Kingdom Table of Contents Chapter Network Settings Chapter Information Menus Appendix a Product Specifications 107 Appendix B Appendix C Prestige 2000WV2 User’s Guide Table of Contents List of Figures List of FiguresPeer-to-Peer Communication in an Ad-hoc Network 119 List of Tables List of TablesEight Subnets About Your Prestige PrefaceRelated Documentation Syntax ConventionsGraphics Icons Key User Guide FeedbackGetting To Know Your Prestige FeaturesPlace a Call via SIP Proxy Server SIP Call Server ApplicationsDirect IP to IP Calling Ad-Hoc Wireless IntercomPrestige Hardware Descriptions Getting to Know the Prestige HardwarePrestige 2000WV2 User’s Guide Prestige 2000WV2 User’s Guide Getting To Know Your Prestige Using the LCD Screen Menus Using the LCD Screen MenusLCD Main Screen Text Input Navigating the LCD Screen MenusPrestige 2000WV2 User’s Guide LCD Main Screen Press the OK key when you are done Prestige 2000WV2 User’s Guide Using the LCD Screen Menus Wireless LAN Setup Menus Wireless LAN Setup MenusSite Survey Select Site SurveySelect Wireless in the first menu screen use the up or down Network ModeSsid Arrow to highlight it and then press the Left keyChannel Select Network ModeWEP Encryption RateSelect Key Select Authentication TypeProfiles WEP for encryption, not for authenticationCreate Prestige 2000WV2 User’s Guide Wireless LAN Setup Menus Network Settings Network SettingsFixed IP Select IP AddressSelect Subnet Mask DhcpPPPoE Select PPPoE Pwd Select PPPoE NameSIP Settings SIP SettingsRegistrar Server Select Registrar Select Registrar IPSelect Expiry Time Outbound Proxy ServerSelect Outbound Proxy Select Proxy Server Proxy ServerSelect User Account Select Phone Number User AccountSelect User Pwd Prestige 2000WV2 User’s Guide SIP Settings Calling Methods PhonebookAdding a Phonebook Entry PhonebookSelect Add Entry Editing Phonebook EntriesErasing Phonebook Entries Select Speed Dial Speed Dial Phonebook EntriesMissed Calls Call HistoryCall History Received Calls Erasing Calls Dialed CallsSelect Erase Calls Setting the Ring Melody Miscellaneous SettingsMiscellaneous Settings Adjusting the Ring Volume Setting the Vibration ModeSelect Ringer Volume Setting the Date Setting the TimeSelect Edit Time Select Edit DateSetting the Key Lock Setting the BannerSelect Settings in the first menu screen Press the Left key to save your settingSelect Don’t Disturb Setting the Don’t DisturbPrestige 2000WV2 User’s Guide Miscellaneous Settings Displaying Information Information MenusSelect MAC Address Information Menus11Select Firmware Ver Using Speed Dial to Dial a Telephone Number Using the Phonebook to Dial a Telephone NumberPrestige Usage Dialing a Telephone NumberAnswering a Call Changing the VolumeRejecting a Call Introduction to the Web Configurator Using the Web Configurator ScreensLogin Using the Web Configurator ScreensLogin Screen Navigating the Prestige Web ConfiguratorSIP Web Configurator User Screens SummaryNAT Trvsl Phone BookPhone Web Configurator Administrator Screens SummaryTOS/DS User Web Configurator Screens User Web Configurator ScreensDevice Information IP Address AssignmentMAC Address IP Address and Subnet MaskDNS Server Network Configuration StaticCancel Network Configuration DhcpApply Dhcp PPPoE Network Configuration Network Configuration PPPoE12.9.1 SIP VoIP IntroductionSIP Identities PPPoESIP Client Server SIP Call ProgressionSIP Call Progression InviteSIP Proxy Server 12.9.1.4 RTP SIP ConfigurationSIP Proxy 12.11 NATNAT Types NAT ExampleFull Cone Restricted Cone Port Restricted Symmetric Full Cone NATFull Cone NAT Example Restricted Cone NATSymmetric NAT Port Restricted Cone NATSIP ALG NAT and SIPFake WAN Address on SIP and RTP Stun NAT Traversal ConfigurationOutbound Proxy ALG NAT Traversal ConfigurationPhone Book Phone Book ConfigurationCalling Methods StunDelete PhonebookWireless Settings Wireless IntroductionWEP Encryption Prestige 2000WV2 User’s Guide PhonebookWEP SsidSystem 12.19 S/W UpdateSubmit Zip files before you can upload them W UpdateAdministrator Web Configurator Screens Administrator Web Configurator ScreensType the SIP proxy server settings SIP Proxy ConfigurationSIP URI SIP ConfigurationVoice Coding Prestige 2000WV2 User’s Guide IP Configuration13.3.1 G.711 Phone Setting Pstn Call Setup Signaling13.3.2 G.729 100 Administrator Web Configurator Screens Administrator Web Configurator Screens 101 Quality of Service13.8 ToS 102 Administrator Web Configurator ScreensIntroduction to DiffServ Problems Starting Up the Prestige TroubleshootingProblems Using the Keypad Troubleshooting Accessing the Prestige Problems Accessing the Prestige104 Troubleshooting Restoring the Factory Default Settings Error Message TroubleshootingError Message Troubleshooting Troubleshooting 105Prestige 2000WV2 User’s Guide 106 Troubleshooting Hardware Specifications Specification TablesAppendix a Product Specifications 107 MIC108 Appendix a Product Specifications Prestige 2000WV2 User’s Guide Firmware FeaturesHTTP, TFTP, TCP, UDP, DNS, ARP, Icmp EssidIP Classes IP AddressingClasses of IP Addresses Appendix B IP Subnetting 109Subnetting Subnet MasksAllowed IP Address Range By Class Natural MasksAlternative Subnet Mask Notation Example Two SubnetsTwo Subnets Example Appendix B IP Subnetting 111112 Appendix B IP Subnetting SubnetAppendix B IP Subnetting 113 Example Four SubnetsEight Subnets Example Eight SubnetsClass C Subnet Planning 114 Appendix B IP SubnettingClass B Subnet Planning Subnetting With Class a and Class B NetworksAppendix B IP Subnetting 115 Prestige 2000WV2 User’s Guide 116 Appendix B IP Subnetting Benefits of PPPoE PPPoE in ActionTraditional Dial-up Scenario Appendix C PPPoE 117Prestige as a PPPoE Client How PPPoE WorksAd-hoc Wireless LAN Configuration Wireless LAN TopologiesAppendix D Wireless LANs 119 120 Appendix D Wireless LANs Basic Service SetInfrastructure Wlan Appendix D Wireless LANs 121Prestige 2000WV2 User’s Guide 122 Appendix D Wireless LANs Numerics IndexIndex 123 Dtmf711 22, 98 729 22, 99 124 IndexIndex 125 SIP ALG 126 IndexWlan Index 127
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