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| Configuring GRE Tunneling |
Table 76: GRE Tunnel Parameters (continued) | ||
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| Field | Description |
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| Remote IP | The IP address of the remote endpoint of the tunnel. |
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| Note: |
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| The local IP and remote IP must be different. |
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|
| DSCP | The offset to the DSCP value in the encapsulation header, which is |
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| used to show the difference between encapsulated traffic and regular |
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| traffic on a physical interface. Possible values are: |
|
| ● No Change |
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| ● An integer between 0 - 63 |
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|
| Interface MTU | The current Maximum Transmission Unit for the physical interface |
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| through which tunnel packets are sent. |
|
| Note: |
|
| This field is |
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|
|
| Path MTU | When checked, the device actively polls the next hop device for MTU |
| Discovery | value. |
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|
|
| Tunnel MTU | The Maximum Transmission Unit for the tunnel. |
|
| Note: |
|
| This field is |
|
| Note: |
|
| This field is only active when Path MTU Discovery is |
|
| active. |
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| Hop Limit | Maximum number of intervening devices between two endpoints of an |
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| IP tunnel. |
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| Verify Checksum | When checked, the Avaya G250/G350/G450 verifies the checksum |
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| value in IP headers of packets traveling over the tunnel. |
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| Key Mode | When checked, a shared key is used for envcrypting traffic over an IP |
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| tunnel. |
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| Key | The shared key for encrypting traffic over an IP tunnel. |
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| Aging Timer | The number of minutes Path MTU Discovery is aged. Default: 10. A |
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| value of 0 indicates Aging Timer is disabled. |
|
| Note: |
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| Aging Timer can only be changed if Path MTU |
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| Discovery is set. |
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| 2 of 3 |
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Issue 5 October 2007 231
