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Contents

Chapter 7 
Basic Routing Information

Basic Router Concepts ...................................................................................................7-1

What is a Router?  ....................................................................................................7-1

IP Addresses and the Internet  .................................................................................7-2

Netmask ...................................................................................................................7-4

Subnet Addressing ...................................................................................................7-4

Private IP Addresses ................................................................................................7-7

Single IP Address Operation Using NAT ..................................................................7-7

Domain Name Server ...............................................................................................7-9

IP Configuration by DHCP  .......................................................................................7-9

Appendix A 
Technical Specification

General Specifications ................................................................................................... A-1

Appendix B 
Ordering ISDN Lines

Ordering the Line ........................................................................................................... B-1

Provisioning for Switches in North America ................................................................... B-2

Provisioning for Nortel Networks Switch  ................................................................. B-3

Provisioning for AT&T 5ESS Switch  ........................................................................ B-5

Glossary

Index

Содержание RH340 - ISDN INET Gateway Router

Страница 1: ...M RH340NA 0 September 1999 NETGEAR Inc A Bay Networks Company 4401 Great America Parkway Santa Clara CA 95054 USA Phone 888 NETGEAR Reference Guide for the Model RH340 Internet Access ISDN Router...

Страница 2: ...limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equi...

Страница 3: ...es for compliance with the regulations VCCI 2 Statement This equipment is in the 2nd Class category information equipment to be used in a residential area or an adjacent area thereto and conforms to t...

Страница 4: ...iv This page left intentionally blank...

Страница 5: ...tions xv Related Publications xv Chapter 1 Introduction About the Router 1 1 Features 1 1 Key Features 1 2 ISDN Support 1 3 Multilink PPP Support 1 3 TCP IP Support 1 3 IP Address Masquerading by Dyna...

Страница 6: ...Chapter 3 Preparing Your Network ISDN Services Checklist 3 1 Local Network Software Checklist 3 2 Configuring Windows 95 or Windows 98 for IP Networking 3 3 Configuring TCP IP Properties 3 5 Verifying...

Страница 7: ...ioning 6 1 LEDS 6 1 Test LED 6 2 LAN Link LED 6 2 Troubleshooting the ISDN Line 6 2 Troubleshooting a TCP IP Network Using a Ping Utility 6 3 Testing the LAN Path to Your Router 6 3 Testing the Path f...

Страница 8: ...e IP Addresses 7 7 Single IP Address Operation Using NAT 7 7 Domain Name Server 7 9 IP Configuration by DHCP 7 9 Appendix A Technical Specification General Specifications A 1 Appendix B Ordering ISDN...

Страница 9: ...ISDN Test Window 4 6 Figure 4 3 Configuration Wizard ISP Information Window 4 8 Figure 4 4 Configuration Wizard ISP Test Window 4 10 Figure 4 5 Configuration Wizard Complete Window 4 12 Figure 5 1 IS...

Страница 10: ...x Figures This page left intentionally blank...

Страница 11: ...6 Table 7 2 Netmask Formats 7 6 Table B 1 Switch Types Supported B 2 Table B 2 National ISDN 1 Services with Nortel B 3 Table B 3 Custom ISDN Services with Nortel B 4 Table B 4 National ISDN 1 Servic...

Страница 12: ...xii Tables This page intentionally blank...

Страница 13: ...ervices much faster than you can with an analog modem The router supports concurrent data and voice communications reducing the need for multiple phone lines Purpose This guide describes the features...

Страница 14: ...Enter key When you read type type the text but do not press the Enter key When you read press press only the alphanumeric or named key When you read click click the left mouse button Note This format...

Страница 15: ...ed Publications In several sections in this document you are directed to various RFC documents for further information In this context an RFC is a Request For Comment RFC published by the Internet Eng...

Страница 16: ...ter supports concurrent data and voice communications reducing the need for multiple phone lines When PCs on the local area network LAN need to communicate with other destinations on the Internet the...

Страница 17: ...onfiguration Protocol DHCP server for dynamically assigning network configuration information to PCs on the LAN DHCP client for dynamically obtaining configuration information from the Internet servic...

Страница 18: ...reconnect may not be noticed by the user Multilink PPP Support When a single channel ISDN call becomes saturated the router can automatically establish an additional ISDN call to provide additional ba...

Страница 19: ...cessing the PCs on your LAN the router enables you to specify one PC for example a Web server on your local network to be accessible to outside users Management Support The router is designed to be in...

Страница 20: ...bed in Chapter 5 Advanced Configuration If you experience problems with router operation refer to Chapter 6 Troubleshooting If you are unfamiliar with IP networking and routing refer to Chapter 7 Basi...

Страница 21: ...E T Ethernet cable white ISDN cable black 9 pin RS 232 serial cable 9 pin D connector to 25 pin D connector adapter This guide Model RH340 Internet Access ISDN Router Installation Guide RH340 Resource...

Страница 22: ...t 10 Mbps standard Ethernet only If any PCs on the network run at 100 Mbps Fast Ethernet a dual speed hub or switch must be used to connect to the router Router Connection The front panel of the Model...

Страница 23: ...The router s ISDN port is unconfigured or cannot synchronize with the attached ISDN line The router is successfully synchronized with the attached ISDN line B1 On There is an active WAN session on th...

Страница 24: ...g PCs 4 RS 232 serial MANAGER port for connecting the router to the serial port of a PC 5 ISDN port for connecting the router to ISDN cable 6 Phone ports for connecting the router to a telephone fax o...

Страница 25: ...uter Refer to Figure 2 3 when installing and connecting your Model RH340 router Figure 2 3 Installing the Model RH340 Router Key 1 AC power adapter 2 PCs or hubs 3 Phone or other analog devices 4 Phon...

Страница 26: ...nector plugs into the center of an 8 pin wall jack Connecting the Ethernet Cable The Model RH340 router provides four Ethernet twisted pair hub ports for connecting to PCs Connections are made using s...

Страница 27: ...telephone company can properly provision your ISDN line when you provide them with an ISDN Ordering Code IOC or EZ ISDN code The NETGEAR Model RH340 router supports the following ordering codes IOC S...

Страница 28: ...cted as the networking protocol The required components are listed below for various operating systems Windows 95 Windows 98 and Windows NT Windows 95 or later includes the software components for est...

Страница 29: ...he router 192 168 0 1 DNS server the router 192 168 0 1 The router performs DNS Proxy These addresses are part of the IETF designated private address range for use in private networks Configuring Wind...

Страница 30: ...IP protocol and Client for Microsoft Networks Figure 3 1 Components for IP Networking Window If you need the adapter a Click on the Add button b Select Adapter and click on Add again c Select the man...

Страница 31: ...configured to obtain its TCP IP configuration information automatically from a DHCP server on the local network To obtain the configuration information from the router 1 Turn on the router Be sure th...

Страница 32: ...dresses of your network PCs to this address for accessing the Internet Your ISP should give you the following basic information for your account A local phone number for accessing the ISP A secondary...

Страница 33: ...r simple The FirstGear Configuration Program can be used to configure a router quickly for Internet access using a tutorial style procedure The FirstGear utility operates on a PC device running Window...

Страница 34: ...Click on Browse 5 Click on the CD drive 6 Select Setup exe 7 Click on OK The Setup window opens which loads the FirstGear program to your hard drive The Welcome Window opens 8 Click on Next The Choose...

Страница 35: ...efore starting FirstGear Check the LAN connection from your PC to the router Refer to Chapter 6 Troubleshooting Any changes made in the configuration windows do not take effect until FirstGear sends t...

Страница 36: ...d ISDN Line Information North America window first illustrated in Figure 4 1 The information for the fields in this window are provided by your local telephone company Figure 4 1 Configuration Wizard...

Страница 37: ...ber for example 5551212 Do not include dashes or spaces in this field If your switch type is AT T 5ESS Custom Point to Point you will have only one telephone number 2 Select the type of ISDN switch or...

Страница 38: ...r sends the configuration information to the router and resets the ISDN port The D LED on the front panel of the router lights FirstGear instructs the router to place a loopback call in which B channe...

Страница 39: ...pe Check that you entered the directory numbers in the local dialing format Do not enter the area code unless it is required for local dialing If your switch is running the National ISDN NI 1 protocol...

Страница 40: ...router using the Configuration Wizard ISP Information window The information for the fields in this window are provided by your ISP Figure 4 3 Configuration Wizard ISP Information Window Note Be sure...

Страница 41: ...ed with the login name above This field is case sensitive 3 Enter the primary telephone number of your ISP and an alternate number if applicable The router always calls your ISP using the primary numb...

Страница 42: ...ration Wizard ISP Test Window During the ISP Test the router places a call to the ISP The B1 LED on the front panel should light When the connection is made the router attempts to log in After the tes...

Страница 43: ...ired for local dialing Check that the ISP s phone number is for an ISDN connection and not an analog modem Check your login name and password 5 Click on Next The Configuration Wizard Complete window o...

Страница 44: ...SP tests completed successfully your router is correctly configured for basic Internet access With the Configuration Wizard Complete window Figure 4 5 you may either exit the program or click on the S...

Страница 45: ...p Networking to connect log in or disconnect These functions will be performed by the router as needed To access the Internet launch a browser application such as Microsoft s Internet Explorer or Nets...

Страница 46: ...of DNS address Enabling 128 Kbps connections using Multilink Changing the idle timeout for ISDN connections to the ISP Selecting Data Over Voice Bearer Service for areas where ISDN data calls are bil...

Страница 47: ...DNS server address your router delivers to the PCs by DHCP when the PCs are rebooted A DNS server is a host on the Internet that translates Internet names to numeric IP addresses When you enter an In...

Страница 48: ...ddress to the PCs by DHCP when the PCs are rebooted Local Server When you use the Model RH340 router with a single user ISP account the router s NAT function prevents Internet locations from directly...

Страница 49: ...plications that may not function well If a local PC with the address 192 168 0 3 for example acts as a game or videoconference host select Forward to this local address and enter 192 168 0 3 in the bo...

Страница 50: ...od of time when no data is passed between the remote node and your router The default is five minutes Data Over Voice Bearer Service In some areas an ISDN data call is charged at a higher rate than an...

Страница 51: ...pproximately one minute the Test LED is no longer lit If these steps do not occur refer to Test LED on page 6 2 If an active Ethernet device is connected to a LAN port the LAN LEDs for that port shoul...

Страница 52: ...Ethernet cable If you are connecting a Model RH340 router directly to a workstation or to the uplink MDI port of a hub use the white straight through LAN cable provided in your NETGEAR package If you...

Страница 53: ...d device The device then responds with an echo reply Troubleshooting a TCP IP network is made easy by using the ping utility within your PC Testing the LAN Path to Your Router To verify that the LAN p...

Страница 54: ...your PC to the Internet To test this path 1 Click on Start from the Windows toolbar 2 Select Run 3 Type in Ping n10 followed by an IP address on the Internet such as your ISP s DNS server If the path...

Страница 55: ...Figure 6 1 Trace Display for a Successful TCP IP Protocol Connection In the example shown the trace steps indicate the following progress DIALING dev 2 ch 0 The router is dialing The ch 0 indicates th...

Страница 56: ...compression BACP stopped The bandwidth allocation control protocol BACP is not being used This step may not appear if the ISP does not support BACP IPCP neg Primary DNS 172 16 215 11 IPCP neg Seconda...

Страница 57: ...t window Click the ISP Test button to run the test Because the ISP test is designed for a single channel connection it will report that the test failed when Multilink is used Examine the displayed tra...

Страница 58: ...r is configured for bandwidth on demand in which the second channel is added only when there is heavy data traffic you may still experience Multilink failures The most common reason is that the two ca...

Страница 59: ...FirstGear s Advanced Options menu Testing the Phone Ports To test the phone ports lift the telephone handset when there are no calls in progress You should hear a dial tone and the LED for that phone...

Страница 60: ...le0 340 using XMODEM transfer protocol from your terminal program Wait for the following message Programming successful 6 Restart the router Internal Manager Interface The internal Manager interface i...

Страница 61: ...Information The factory default Manager password is 1234 To change the Manager password 1 Select option 21 Password from the Main Menu to display Menu 21 System Password 2 Enter your previous system p...

Страница 62: ...only the data traffic meant for the Internet The function of selecting and forwarding this data is performed by a router What is a Router A router is a device that forwards traffic between networks b...

Страница 63: ...y address 11000011 00100010 00001100 00000111 is normally written as 195 34 12 7 which is easier to remember and easier to enter into your computer In addition the 32 bits of the address are subdivide...

Страница 64: ...d a 16 bit node number Class B addresses are in this range 128 1 x x to 191 254 x x Class C addresses can have 254 hosts on a network Class C addresses use 24 bits for the network address and 8 bits f...

Страница 65: ...mple the address 192 168 170 237 is a Class C IP address whose network portion is the upper 24 bits When ANDed with the Class C netmask as shown here only the network portion of the address remains 11...

Страница 66: ...nding the number of addresses available subnet addressing provides other benefits Subnet addressing allows a network manager to construct an address scheme for the network by using different subnets f...

Страница 67: ...255 255 255 0 into 16 subnets 4 bits the new subnet mask becomes 255 255 255 240 Table 7 2 displays several common netmask values in both the dotted decimal and the mask length formats Table 7 1 Netm...

Страница 68: ...255 192 168 0 0 192 168 255 255 NETGEAR recommends that you choose your private network number from this range The DHCP server of the Model RH340 router is preconfigured to automatically assign privat...

Страница 69: ...a single IP address operation Figure 7 3 Single IP Address Operation Using NAT This scheme offers the additional benefit of firewall like protection because the internal LAN addresses are not availab...

Страница 70: ...their customers to use them for address lookup IP Configuration by DHCP When an IP based local area network is installed each PC must be configured with an IP address If the PCs need to access the Int...

Страница 71: ...ss ISDN Router General Specifications Network Protocol and Standards Compatibility WAN Protocols PPP Multilink PPP Data and Routing Protocols TCP IP DHCP ISDN Standard National ISDN 1 North America AT...

Страница 72: ...ight 1 1 kg 2 5 lb Environmental Specifications Operating temperature 0 to 40 C Operating humidity 90 maximum relative humidity noncondensing Electromagnetic Emissions Meets requirements of FCC Part 1...

Страница 73: ...g Center of your local telephone company to find out what type of ISDN service is available 2 Provide your telephone company with the proper provisioning information Refer to the next sections to dete...

Страница 74: ...ring Codes are a set of U S industry standards developed by the National ISDN Users Forum NIUF Summarizing a specific set of ISDN features and services IOCs contain all the configuration information n...

Страница 75: ...Nortel switch type supports two types of ISDN service National ISDN 1 and custom Table B 2 lists the provisioning features and settings for National ISDN 1 services when using the Nortel switch Note...

Страница 76: ...Nortel switch Table B 3 Custom ISDN Services with Nortel Provisioning Feature Setting Signaling Functional Protocol Version Control PVC 1 Custom TEI assignment Dynamic Maximum number of keys maxkeys...

Страница 77: ...s when using the AT T 5ESS switch Table B 4 National ISDN 1 Services with AT T Provisioning Feature Setting Term Type A Circuit Switched Voice CSV 1 CSV Additional Call Offering ACO Unrestricted CSV l...

Страница 78: ...cation Busy NB limit 1 MTERM 2 Table B 6 Point to Point Services with AT T Provisioning Feature Setting Term Type A Call Appearances CA 1 CA Quantity 1 Circuit Switched Voice CSV 1 CSV Flexible Call O...

Страница 79: ...er Line Identification Caller Line Identification Also known as Caller ID The directory number of the caller is provided by the telephone company to the party called during call setup CHAP See Challen...

Страница 80: ...cimal notation IPX See Internet Packet Exchange ISDN See Integrated Services Digital Network ISP Internet service provider Integrated Services Digital Network A digital telephone network for transmiss...

Страница 81: ...address For example a 28 bit mask starting from the MSB can be shown as 255 255 255 192 or as 28 appended to the IP address Network Address Translator or Translation A proposal for IP address reuse wh...

Страница 82: ...ge information with one another so that they can determine minimum distance paths between sources and destinations Service Profile Identifier A number assigned by the telephone company to an attached...

Страница 83: ...ation restoring 6 9 DHCP 1 4 7 9 directory number field ISDN 4 5 DNS proxy 1 4 DNS server 5 2 domain name server DNS 7 9 DOVBS 5 5 Dynamic 1 3 dynamic NAT See Network Address Translation E Ethernet ca...

Страница 84: ...tmask description 7 4 translation table 7 6 Network Address Translation 1 3 7 7 network checklist 3 2 network hardware checklist 2 2 P package contents 2 1 password changing 6 11 restoring 6 9 passwor...

Страница 85: ...nfiguring 3 1 network troubleshooting 6 3 Protocol 6 5 trace display 6 5 troubleshooting 6 1 U UNIX network 4 1 UNIX system using to configure 1 4 W warranty 1 3 Windows configuring for IP routing 3 3...

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