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Series 3: Setup a GRE Tunnel between two capable Cradlepoint routers

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Series 3: Setup a GRE Tunnel between two capable Cradlepoint routers

Products Supported: AER3100, AER2100, MBR1400v2, MBR1400, MBR1200B, CBR400, CBR450, IBR1100, IBR1150, IBR600 and IBR650. Click here to identify your router.

Firmware Version: 5.4.x - for information on upgrading firmware, click here.

Firmware version 6.0 has been released and introduces a vastly improved GUI for all current Series 3 routers.  Cradlepoint has created new Knowledge Base articles with updated screen shots and instructions for the new GUI layout.  As a result, this article has received its final update.  To view the version of this Knowledge Base article for Firmware 6.0 and Later please click here 


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Summary

Configuration

Router ONE

Router TWO

Related Articles


Summary

This purpose of this document is to provide directions to setup a basic GRE terminated tunnel between capable Cradlepoint Series 3 routers where both connections have static IP addresses.

Generic Routing Encapsulation (GRE) is a tunneling protocol that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links over an Internet Protocol internetwork.


Configuration

Configuration Difficulty: Expert

Router ONE Configuration

  • Step 1: Log into the router's Setup Page. For help with logging in please click here.
  • Step 2: Click on the Internet tab and select GRE Tunnels in the drop-down menu.

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  • Step 3: Click Add to create a new tunnel.

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  • Step 4: Configure the general tunnel settings and click Next.
    • Give the tunnel a unique name that does not contain spaces.
    • Enter a Local Endpoint and Remote Endpoint with a Subnet Mask.
    • Enter the WAN IP address of Router TWO as the Remote Gateway.
    • Ensure Tunnel Enabled is checked.
    • (Optional) Refer to Manual: Internet → GRE Tunnels for a summary of other available options to determine whether they might need to be used in your setup. In this setup Multicast has been enabled.

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  • Step 5: Click Add Route to add the LAN address of Router TWO. Click Save and then Next.

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  • Step 6: Place a check next to Enabled within the Keep Alive configuration to allow the router to actively monitor the status of this GRE tunnel.

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  • Step 7: Click Finish to save the tunnel settings, then click OK to accept the notification dialog.

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Router TWO Configuration

  • Step 1: Log into the router's Setup Page. For help with logging in please click here.
  • Step 2: Click on the Internet tab and select GRE Tunnels in the drop-down menu.

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  • Step 3: Click Add to create a new tunnel.

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  • Step 4: Configure the general tunnel settings and click Next.
    • Give the tunnel a unique name that does not contain spaces.
    • Enter a Local Endpoint and Remote Endpoint with a Subnet Mask.
    • Enter the WAN IP address of Router ONE as the Remote Gateway.
    • Ensure Tunnel Enabled is checked.
    • (Optional) Refer to Manual: Internet → GRE Tunnels for a summary of other available options to determine whether they might need to be used in your setup. In this setup Multicast has been enabled.

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  • Step 5: Click Add Route to add the LAN address of Router ONE. Click Save and then Next.

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  • Step 6: Place a check next to Enabled within the Keep Alive configuration to allow the router to actively monitor the status of this GRE tunnel.

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  • Step 7: Click Finish to save the tunnel settings, then click OK to accept the notification dialog.

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Now that both sides of the tunnel have been configured, the tunnel status can be viewed under the Status tab, on the GRE page.

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Related Articles/Links


Published Date: 10/7/2015

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