N-Tron 708 Series Technical Instructions
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N-Tron 708 Series Technical Instructions

Managed industrial ethernet switch dynamic host configuration protocol
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708, 709FX, 710FX2, 711FX3, 712FX4, 714FX6,
716, 7010TX, 7012FX2, 7018, & 7506GX2 Series
Managed Industrial

Ethernet Switch

DHCP Technical Instructions
Page 1 of 33
Revision 2010-11-15

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  • Page 1: Ethernet Switch

    708, 709FX, 710FX2, 711FX3, 712FX4, 714FX6, 716, 7010TX, 7012FX2, 7018, & 7506GX2 Series Managed Industrial Ethernet Switch DHCP Technical Instructions Page 1 of 33 Revision 2010-11-15...

  • Page 2: Table Of Contents

    N-Tron Relay Agent Setup Process – Basic Setup Flow .................. 12 Setup Option 82: Relay Agent Switch ......................13 N-Tron DHCP Server Static Range Setup Process – Basic Setup Flow ............14 Setup Option 82: DHCP Server Switch ......................15 Setting up a Single IP ............................

  • Page 3: Overview

    (DHCP is explained in RFC 2131). The N-Tron DHCP Switch can be configured to be a DHCP Server, a DHCP Relay Agent, or both. DHCP Server - manages and allocates IP address from a pool of address, defined by Profiles, to requesting Clients.

  • Page 4: Configuring Dhcp Server And Relay Agent

    Configuring DHCP Server and Relay Agent The following information will be helpful as you configure the N-Tron DHCP Server. A high level flow of the basic configuration is provided by Figure: Flow_DHCP_1. In order to use the DHCP server in offering IP addresses, several configuration steps are essential. N-Tron uses Profiles and Mappings to organize how the IP’s will be offered to Clients.

  • Page 5: N-Tron Dhcp Setup Process - Basic Setup Flow

    N-Tron DHCP Setup Process – Basic Setup Flow DHCP Server N-Tron DHCP Setup Enable DHCP Server Process DHCP Server Setup Profiles DHCP Server Setup IP Maps DHCP Server DHCP Server DHCP Server Create Create Create Single IP Dynamic Range Static Range...

  • Page 6: Getting Connected With N-Tron Dhcp Server

    Getting connected with N-Tron DHCP Server N-Tron Switches provide a Web Interface for all your DHCP configurations. The two main menus for DHCP configuration are: DHCP – contains the configuration for both the DHCP Server and Relay Agent. Administration – clicking on Administration / System / IP Configuration menu, allows you to configure the DHCP Client to be either Static or DHCP.

  • Page 7: Enabling The Dhcp Server

    Enabling the DHCP Server Click on: DHCP / Server / Setup Profiles. See Figure: Menu_1 Click on: Modify Button. See Figure: Setup_1 Click on Server Enabled Box and select Enabled. Click on Update Button. Click on Saved. Figure: Setup_1 Setting up the DHCP Server Profiles Click on: DHCP / Server / Setup Profiles.

  • Page 8: Setting Up The Dhcp Server Mappings

    Setting up the DHCP Server Mappings Mappings are used to define rules that are used in determining what IP address will be offered to the client. N-Tron provides the following Mapping Types: Figure: Mapping_1 Setting up a Dynamic Range IP address allocation is Dynamic and is based on the first free IP address in the defined range.
  • Page 9 Mapping: The resulting mapping from the setup can be viewed by clicking on DHCP / Server / Setup IP Maps. See Figure: Dynamic_2 below. Figure: Dynamic_2 Connection: Connect the Ethernet cable to the device and to a port on the Server. Powering On and Status Display: Power on the client device.

  • Page 10: Setting Up A Static Range

    Setting up a Static Range Using a static IP address enables the DHCP Server to assign a DHCP Client the same IP address each time the device is connected to a designated port on a Relay Agent. Basic configuration using Option 82 Relay Agent The setup for this method is a 2 step process and will be described below.
  • Page 11 There are four formats you can use to enter Circuit ID data. Hex, MAC, IP and String The default string has particular meaning to an N-Tron Server switch: (Port-VLAN). For example TX1-0001. Entering string data in any other format will require you to use the Relay Agent Type : Generic when configuring the DHCP Server.

  • Page 12: N-Tron Relay Agent Setup Process - Basic Setup Flow

    N-Tron Relay Agent Setup Process – Basic Setup Flow Enable Relay N-Tron DHCP Status Relay Agent & Local IP Setup Select Port: Disabled Assign Local IP Select: Relay Status Enabled Create Circuit ID Input Formts: Hex String MAC Address IP Address...

  • Page 13: Setup Option 82: Relay Agent Switch

    Select the Port the Client will be connected to on the Relay Agent. Set Relay Status on the Port selected to Enabled. Set the Circuit ID. The N-Tron default is provided in the text box. Click Update when finished. Figure: Option82_1...

  • Page 14: N-Tron Dhcp Server Static Range Setup Process - Basic Setup Flow

    N-Tron DHCP Server Static Range Setup Process – Basic Setup Flow Select N-Tron Network DHCP Server profile Static Range Setup Select Relay N-Tron Generic Agent Type Select Select N-Tron Switch Apply Port Count Type Add Port Create (Port to be Mapped)

  • Page 15: Setup Option 82: Dhcp Server Switch

    Setup Option 82: DHCP Server Switch Click on: DHCP / Server / Setup IP Maps. See Figure: Menu_1 Click on: Static Range. Reference Figure: Option82_2 below. Select the Profile you wish to add this mapping too. Enter Remote ID: Ex. 192.168.2.1 Click the Add check box corresponding to the port on which the Client is connected.
  • Page 16 Connection: Connect the Ethernet cable to the port on the Relay Agent you defined in the mapping. Powering On and Status Display: Power on the client device. The device will request an IP address from the Server through the Relay Agent. The Server will offer the client an IP address based on the Option 82 Static Mapping.

  • Page 17: Setting Up A Single Ip

    Setting up a Single IP IP address allocation is Static and is based on matching Option 61 information received from a Client. The same IP address will be given each time to a specific Client. Basic configuration using Option 61 or MAC Address Topology: DHCP Client...
  • Page 18 Mapping: Connection: Connect the Ethernet cable to a port on the DHCP Server or switch connected to the Server. Powering On and Status Display: Power on the client device. The device will request an IP address from the Server. The Server will offer the client an IP address based on the Option 61 Static Mapping. Allow 20 –...

  • Page 19: Setting Up An N-Tron Switch As A Client Device

    (Factory Settings) a switch is configured to be Static with a default IP address of 192.168.1.201. When the N-Tron switch is configured as a DHCP Client, it can be set to change to the Fallback values if a DHCP server doesn’t give the switch an IP address in approximately 2 minutes by changing the Fallback IP from the Default IP address of 192.168.1.201.
  • Page 20 Figure: Client_1 Page 20 of 33 Revision 2010-11-15...

  • Page 21: Relay Agent - Stand Alone

    Relay Agent - Stand Alone Setting up the Relay Agent to obtain a Local IP Address Topology: DHCP Client Example: This method of obtaining an IP address is quick and easy to setup. In this example connecting a Client to Port TX1 of the Relay Agent will cause the Relay Agent to give an IP address of 192.168.2.25 to the Client.

  • Page 22: Advanced Dhcp Server Topologies

    Advanced DHCP Server Topologies Setting up a redundant DHCP Server using 2 N-Rings across N-Link Topology 1: N-Rng Manager DHCP Server N-Ring #1 Control Port Control Port Default: TX3 (Auto-Detected) Control Link N-Link Master N-Link Slave N-Ring Member Partner Link N-Ring Member (2.24) (N-Ring Segment)
  • Page 23 Topology 2: DHCP Client-A DHCP Server 1 Client-B (2.24) DHCP Client-C Server 2 Figure: Advanced_Redundancy_T2 Example: This example shows how to setup Server redundancy within an N-Ring and N-Link network. Topology 1 shows the Network architecture without the clients. Topology 2 is a subset of Topology 1 and shows the Redundant Servers, a Relay Agent with attached Clients.
  • Page 24 Warning: If a Dynamic Range is created, it can only reside on one switch. Only one DHCP Server will be configured. The other DHCP Server will receive the DHCP configuration by Uploading from the configured DHCP Server. Reference the Basic DHCP setup information above and Figure: Advanced_Redundancy_T1 Page 24 of 33 Revision 2010-11-15...
  • Page 25 Configuring one of the DHCP Servers (1) Enable the DHCP Server, Add a Profile. See: Enabling the DHCP Server and Setting up the DHCP Server Profiles. Add an Option61 Static entry for each N-Link switch. See: Setting up a Single IP. Figure: Advanced_Redundancy_T1 references these switches as (2.24, 2.25, 2.26, 2.27).
  • Page 26 Convert your N-Link switches from Static to DHCP in order to use the Mapping created. See section: Setting up an N-Tron Switch as a Client Device. You should see the following in the DHCP Server Binding list for the N-Link switches.
  • Page 27 Configuring DHCP Servers (2) Download the DHCP configuration from DHCP Server (1) using TFTP. See section Firmware/Config – TFTP. Disable DHCP Server on the second server. Upload this file to the second DHCP Server. See section Firmware/Config – TFTP. If TFTP is not available repeat the process from section: Configuring one of the DHCP Servers (1), on the second Server.
  • Page 28 Connection: Connect the Ethernet cable to the device and to the Port selected in the Setup section. Powering On and Display: Power on the client device. The device will request an IP address from the Relay Agent. The Relay Agent will offer the client the IP that was setup for the particular port. Allow 20 seconds for the DHCP transactions to finalize.

  • Page 29: Firmware/Config - Tftp

    The TFTP tab under the Firmware/Config category gives the administrator the ability to upload or download a config file for an N-Tron switch. This allows administrators to backup their configurations to a server offsite in case they need to reload their custom configurations at a later time. It is important not to cycle power on the switch or interrupt the data connection between the TFTP server and the switch while you are uploading/downloading a config file.
  • Page 30 Firmware/Config – TFTP, Continued… In order to Download and Upload information from the PC to the switch you will need to download and install a TFTP Server application on the PC. We recommend using SolarWinds TFTP Server. You may download if for free from here: http://www.solarwinds.com/products/freetools/free_tftp_server.aspx You must also make sure that Pings are enabled on the Firewall.

  • Page 31: Support

    5. Tick the Allow incoming echo request box. 6. Click on OK and then OK again. 7. Close the Control Panel. SUPPORT Contact Information N-Tron Corp. 820 South University Blvd. Suite 4E Mobile, AL 36609 TEL: (251) 342-2164 FAX: (251) 342-6353 WEBSITE: www.n-tron.com...

  • Page 32: N-Tron Limited Warranty

    N-TRON, Corp. warrants to the end user that this hardware product will be free from defects in workmanship and materials, under normal use and service, for the applicable warranty period from the date of purchase from N-TRON or its authorized reseller. If a product does not...
  • Page 33 GOVERNING LAW: This Limited Warranty shall be governed by the laws of the State of Delaware, U.S.A Page 33 of 33 Revision 2010-11-15...

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