Patton electronic Essential Guide to Conguring Your SNTP Client for Network Synchronization
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Models 2603, 2621, and 2635 Getting Started Guide

11 • SNTP Client Configuration

 

 

Introduction

The Simple Network Time Protocol (SNTP) Client webpage contains the configurable parameters for either setting up the SNTP client or, in the abscence of an SNTP server, setting the internal clock.

If you plan the use of an SNTP server, you will configure the ‘SNTP Client Mode Configuration Parameters’ and ‘SNTP Client General Configuration Parameters.’ If you are not accessing an SNTP server, you can con- figure the system clock for a calendar clock setting.

Configuring the SNTP Client

The “SNTP Client Mode Configuration Parameters” section is for selecting the synchronization mode and entering the IP address of the SNTP Server. With the “SNTP Client General Configuration Parameters” sec- tion, you will select the time zone and set the transmit packet timeout period, retries, and polling period.

SNTP Client Mode Configuration Parameters

In this section you configure the synchronization mode and enter the IP address of the SNTP server. The IPLink supports three synchronization modes: unicast mode, anycast mode, and broadcast mode. Unicast is a point-to-point mode. Anycast is a multipoint-to-point mode. Broadcast mode is for use when the SNTP server is on the local network, that is, the same subnet as the IPLink.

When Unicast mode is enabled, the IPLink sends a request to the server designated in the field containing the SNTP server’s IP address. (See figure 81.) This is a point to point communication link. The IPLink requests from one server. The server sends the timing information directly to the IPLink. When disabled, the IPLink does not send any requests to any SNTP Server.

In Broadcast mode, the synchronization is with an SNTP server on the local network. Since routers do not for- ward broadcast IP addresses, the SNTP server and IPLink must be on the same subnet.

With Anycast mode, the IPLink’s SNTP client sends a request to a designated broadcast address. One or more SNTP servers may reply with a unicast message to the IPLink. The IPLink communicates with the server first responding. After this point, the IPLink operates in unicast mode. When Anycast is enabled, Unicast is auto- matically enabled and the IP address of 255.255.255.255 is in the SNTP server’s IP address field. Anycast takes precedence over Broadcast mode.

The field Configured IP Address of SNTP Server: is the IP address of the dedicated unicast server that the SNTP client will use for synchronization.

Figure 81. SNTP synchronization and server IP address configuration

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 About this guide AudienceStructure Impaired functioning PrecautionsGeneral observations Safety when working with electricityFactory default parameters Typographical conventions used in this documentGeneral conventions General Information Chapter contentsGeneral attributes IPLink Series High Speed Routers overviewProtocol support EthernetPPP Support WAN InterfacesFront 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 Hardware installation Interface cable installationWhat you will need 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 Operation and Configuration IP address modificationPC Configuration Web BrowserModel 2603 home Model 2635 home Ethernet LAN Port Ethernet Port LAN ConnectionsBasic Ethernet port attributes Configurable Ethernet parameters Serial Port Configuration WAN Serial Port Configuration Serial InterfaceVariables 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 WAN Service Configuration PPP ConfigurationPPP Bridged 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 PoliciesEnabling the Firewall Firewall PortfiltersDeleting a security Policy 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 Introduction to NAT Enabling NATGlobal address pool and reserved map 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 poolAdditional option information Default gateway option informationDhcp Relay Configuration of the Dhcp RelayDhcp Relay webpage Configuring the DNS Relay DNS RelayDNS Relay configuration webpage IP Services IP Services WEB ServerCLI Configuration 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 AccessUpdate Backup/RestoreSave 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 StatusWAN Status LAN StatusHardware Status Defined InterfacesStatus LEDs Contacting Patton for assistance Warranty coverage Contact informationPatton support headquarters in the USA Returns for credit Out-of-warranty serviceReturn for credit policy RMA numbersEMC Appendix a Compliance informationCompliance SafetyRadio and TV Interference FCC Part CE Declaration of ConformityAuthorized European Representative Appendix B Specifications Ethernet General CharacteristicsSync Serial Interface T1/E1 InterfaceProtocol Support PPP SupportManagement Power and Power Supply Specifications DimensionsAC universal power supply VDC 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 CLI Terminology Using the ConsoleLocal VT-100 emulation Remote TelnetThen Administering user accounts Setting user passwordsAdding new users Changing user settings Controlling login accessControlling user access
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