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4,215 bytes removed ,  09:15, 18 December 2018
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[[Image:Services vpn gre tunnel configuration.PNG]]
 
[[Image:Services vpn gre tunnel configuration.PNG]]
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{| class="wikitable"
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<table class="nd-mantable">
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    <tr>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | FIELD NAME
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        <th>field name</th>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | VALUE
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      <th>value</th>
! style="width: 579px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | DESCRIPTION
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      <th>description</th>
|-
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    </tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Enabled
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    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | yes {{!}} no; Default: '''no'''
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      <td>Enabled</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Toggles GRE Tunnel ON or OFF
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      <td>yes {{!}} no; Default: '''no'''</td>
|-
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      <td>Toggles GRE Tunnel ON or OFF</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Remote endpoint IP address
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    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | ip; Default: " "
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    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | WAN IP address or hostname of the remote GRE Tunnel instance
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      <td>Remote endpoint IP address</td>
|-
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      <td>ip; Default: " "</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Remote network
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      <td>WAN IP address or hostname of the remote GRE Tunnel instance</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | ip; Default: " "
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    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | LAN IP address of the remote device
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    <tr>
|-
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    <td>Remote network</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Remote network netmask
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        <td>integer [0..32]; Default: " "</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [0..32]; Default: " "
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        <td>LAN IP address of the remote device</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | LAN netmask of the remote device
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    </tr>
|-
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    <tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Local tunnel IP
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    <td>Remote network netmask</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | ip; Default: " "
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        <td>integer [0..32]; Default: " "</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Local virtual IP address. Can’t be in the same subnet as LAN network
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        <td>LAN netmask of the remote device</td>
|-
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    </tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | MTU
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    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [0..255]; Default: '''255'''
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      <td>Local tunnel IP</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Fixed time-to-live (TTL) value on tunneled packets. The 0 is a special value meaning that packets inherit the TTL value
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      <td>ip; Default: " "</td>
|-
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      <td>Local virtual IP address. Can’t be in the same subnet as LAN network</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | TTL
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    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [0..255]; Default: '''255'''
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    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Fixed time-to-live (TTL) value on tunneled packets. The 0 is a special value meaning that packets inherit the TTL value
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      <td>MTU</td>
|-
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      <td>integer [0..255]; Default: '''255'''</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | PMTUD
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      <td>Toggles the Path Maximum Transmission Unit Discovery (PMTUD) status on this tunnel ON or OFF</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | yes {{!}} no; Default: '''no'''
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    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Toggles the Path Maximum Transmission Unit Discovery (PMTUD) status on this tunnel ON or OFF
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    <tr>
|-
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    <td>TTL</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Redirect LAN to GRE
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        <td>integer [0..255]; Default: '''255'''</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | yes {{!}} no; Default: '''no'''
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        <td>Fixed time-to-live (TTL) value on tunneled packets. The 0 is a special value meaning that packets inherit the TTL value</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Redirects LAN traffic to the GRE interface
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    </tr>
|-
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    <tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Enable Keep alive
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    <td>PMTUD</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | yes {{!}} no; Default: '''no'''
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        <td>yes {{!}} no; Default: '''no'''</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Gives the ability for one side to originate and receive keep alive packets to and from a remote router
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        <td>Toggles the Path Maximum Transmission Unit Discovery (PMTUD) status on this tunnel ON or OFF</td>
|-
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    </tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Keep Alive host
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    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | host {{!}} ip; Default: " "
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      <td>Redirect LAN to GRE</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Keep Alive IP address to send pings to. Preferably this should be an IP address which belongs to the LAN network on the remote device
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      <td>yes {{!}} no; Default: '''no'''</td>
|-
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      <td>Redirects LAN traffic to the GRE interface</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Keep alive interval
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    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [0..255]; Default: " "
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    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Frequency at which ICMP packets are sent by the Keep Alive function (in seconds)
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      <td>Enable Keep alive</td>
|-
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      <td>yes {{!}} no; Default: '''no'''</td>
|}
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      <td>Gives the ability for one side to originate and receive keep alive packets to and from a remote router</td>
 +
    </tr>
 +
    <tr>
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    <td>Keep Alive host</td>
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        <td>host {{!}} ip; Default: " "</td>
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        <td>Keep Alive IP address to send pings to. Preferably this should be an IP address which belongs to the LAN network on the remote device</td>
 +
    </tr>
 +
    <tr>
 +
    <td>Keep alive interval</td>
 +
        <td>integer [0..255]; Default: " "</td>
 +
        <td>Frequency at which ICMP packets are sent by the Keep Alive function (in seconds)</td>
 +
    </tr>
 +
</table>
    
To find a more in-depth GRE Tunnel configuration example, visit '''[[GRE Tunnel configuration examples|this page]]
 
To find a more in-depth GRE Tunnel configuration example, visit '''[[GRE Tunnel configuration examples|this page]]

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