Patton electronic 2635 Introduction, Services and features normally associated with each other

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Models 2603, 2621, and 2635 Getting Started Guide	8 • DHCP and DNS Configuration

Introduction

The routers offer a DHCP Server, DHCP Relay capability, and DNS Relay incorporated into the IPLink. Of the two DHCP features, only one can be enabled at a time-either DHCP server or DHCP relay.

DNS relay can hold two DNS server IP addresses in memory so the DNS relay can forward DNS queries and responses between the host user and the DNS server.

The DHCP Server will listen for DHCP client requests on a suitable IP interface. Typically this is the Ethernet interface, named ip1 by default.

Note The Ethernet LAN port can be conﬁgured as a DHCP client to receive its IP address from a DHCP server on the Ethernet LAN. If so conﬁgured, you should not enable the IPLink’s DHCP server on the Ethernet interface.

DHCP Relay functions transparently between a a DHCP client and a DHCP server. The DHCP relay appears as a DHCP server to the DHCP client’s point of view. The relay operates by forwarding all broadcast client request to known DHCP servers. The DHCP relay listens on all available interfaces. All relay-server communi- cation is unicast. It is important that valid routes are set up to the server and also to the client.

Services and features normally associated with each other

The following table (ﬁgure 4) is to give guidance on what services of IPLink features to conﬁgure when you have decided to use DHCP Server, DHCP Relay, or DNS Relay.

If you are conﬁguring a feature listed in the ﬁrst column (Conﬁgured Feature), you can determine which other features either cannot be, must be, usually, can be, or are rarely used. The “Rarely used” column is listed to be technically correct, but it is ill advised to use. The three most important columns (other than the ﬁrst) are:

•Cannot be used

•Must be used

•Usually used

Use the table like this: “The feature in this column [...] with the Conﬁgured Feature (in Column 1).”

For example:

1.The feature DHCP Relay [column 2] cannot be used with DHCP Server [row 1, column 1].

2.The feature Routed [column 4] usually is used with DHCP Relay [row 2, column 1].

Introduction

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Contents IPLink Series High Speed Routers Mailsupport@patton.com Summary Table of Contents Contents Contents Models 2603, 2621, and 2635 Getting Started Guide Remote Site Configuration Central site configuration EMC Ethernet Cable 123 Adapter Contents Models 2603, 2621, and 2635 Getting Started Guide List of Figures Models 2603, 2621, and 2635 Getting Started Guide List of Tables Structure About this guideAudience Impaired functioning PrecautionsGeneral observations Safety when working with electricityGeneral conventions Factory default parametersTypographical conventions used in this document General Information Chapter contentsGeneral attributes IPLink Series High Speed Routers overviewWAN Interfaces EthernetProtocol support PPP SupportFront Panel Status LEDs and Console Port SecurityConsole port Rear panel connectors and switchesEthernet port outlined in green Power connectorGeneral Information Product Overview Introduction Sync Serial Application Applications OverviewInitial Conﬁguration What you will need Hardware installationInterface cable installation RJ-48C pinout diagram Models 2603, 2621, and 2635 Getting Started Guide Mechanical serviceability Case being opened with a screwdriver Ethernet connector Interface connector RJ-45 DB-25 DCE Installing the AC power cordInitial Configuration Do the following Installing the Ethernet cableWeb Browser IP address modiﬁcationWeb Operation and Conﬁguration PC ConﬁgurationModel 2603 home Model 2635 home Ethernet LAN Port Ethernet Port LAN ConnectionsBasic Ethernet port attributes Conﬁgurable Ethernet parameters Serial Port Conﬁguration Variables WAN Serial Port ConﬁgurationSerial Interface T1/E1 Interface Conﬁguration Web Interface ConﬁgurationWeb Conﬁguration , enter username See ﬁgure Conﬁguring the IPLink Series 2603 for T1 OperationConﬁguring the IPLink Series 2603 for E1 Operation Line Options Fractional T1Serial Port Configuration PPP Bridged WAN ServicesWAN Services PPP Bridged WAN Service ConﬁgurationPPP Conﬁguration Leave User name and Password blank. Click on Create Remote site conﬁguration PPP RoutedClick on Create Click the Update button PPP link status LMI Conﬁguration LMI Management Frame Relay linksWeb Conﬁguration Methods Dlci Number Use Frame Relay ConﬁgurationFrame Relay bridged creation Frame Relay bridgedCentral site conﬁguration Relay Frame Relay RoutedDescription FR routed Frame Relay Channel Routed conﬁguration Cost Interface frame-0 WAN Services Security Conﬁguring the router Click on Create a new serviceClick on the Create a new Ip route... hyperlink Valid gateway route Conﬁguring the security interfacesSecurity conﬁguration home Deﬁne ‘ppp-0’ interface as External Conﬁguring Security PoliciesDeleting a security Policy Enabling the FirewallFirewall Portﬁlters Add Raw IP Filter Security TriggersConﬁguring TCP port ﬁlter for FTP Adding trigger for FTP data transfer Attack Name Protocol Attacking Host Blacklisted? Intrusion Detection System IDSSecurity Global address pool and reserved map Introduction to NATEnabling NAT Click on Add Global Address Pool button Dhcp and DNS Conﬁguration Services and features normally associated with each other NAT Dhcp ServerDhcp Server web Dhcp server conﬁguration web Parameters for the Dhcp Server subnetDhcp IP address pool IP Addresses to be available on this subnetDNS server option information Example based on default range of IP address poolConﬁguration of the Dhcp Relay Default gateway option informationAdditional option information Dhcp RelayDhcp Relay webpage Conﬁguring the DNS Relay DNS RelayDNS Relay conﬁguration webpage IP Services CLI Conﬁguration IP ServicesWEB Server Associated Ports for the different System IP Services System Conﬁguration Authentication web page showing default superuser AuthenticationAccess the conﬁguration and status of the alarms AlarmAlarm & Alarm Error Log conﬁguration Remote AccessSave UpdateBackup/Restore Restart Website SettingsSnmp Daemon Error LogSnmp Daemon conﬁguration System ToolsSntp Client Conﬁguration Conﬁguring the Sntp Client Sntp Client Mode Conﬁguration ParametersSntp Client General Conﬁguration Parameters System Clock SettingConﬁguration of the internal system calendar clock System Status Port Connection Status System StatusDeﬁned Interfaces LAN StatusWAN Status Hardware StatusStatus LEDs Contacting Patton for assistance Patton support headquarters in the USA Warranty coverageContact information RMA numbers Out-of-warranty serviceReturns for credit Return for credit policyEMC Appendix a Compliance informationCE Declaration of Conformity SafetyCompliance Radio and TV Interference FCC PartAuthorized European Representative Appendix B Speciﬁcations T1/E1 Interface General CharacteristicsEthernet Sync Serial InterfaceManagement Protocol SupportPPP Support VDC power supply DimensionsPower and Power Supply Speciﬁcations AC universal power supplyAppendix C Cable Recommendations Adapter Ethernet CableAppendix D IPLink Physical Connectors RJ-45 non-shielded RS-232 console port EIA-561 RJ-45 shielded 10/100 Ethernet portSerial port 35 M/34 and DB-25 ConnectorPin No Circuit Signal Name Direction 21 DB-15 ConnectorPin No Signal E1/T1 RJ-48C ConnectorAppendix E Command Line Interface CLI Operation Remote Telnet Using the ConsoleCLI Terminology Local VT-100 emulationThen Adding new users Administering user accountsSetting user passwords Controlling user access Changing user settingsControlling login access

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