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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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The Device Incorrectly Forwards L2TP Packets

The Device Incorrectly Forwards L2TP Packets

Possible cause:

If the VT interface on the LNS is configured with a non-32-bit subnet mask, the VT interface forwards all the packets matching the network segment route if there is only one VPN dial-up user, even if the packets are not destined for end users. If there are multiple VPN dial-up users, the device does not forward the packets because it cannot determine the destined VPN user based on the network segment route.

Solution:

Set the subnet mask of the VT interface to 32 bits.

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Updated: 2019-05-10

Document ID: EDOC1000079719

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