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NE40E V800R010C10SPC500 Configuration Guide - User Access 01

This is NE40E V800R010C10SPC500 Configuration Guide - User Access
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Configuring Control Packet Retransmission

Configuring Control Packet Retransmission

After control packet retransmission is enabled, if a device on one end of the tunnel does not receive any response packet from its peer when the device retransmits a control packet for the specified number of times within a certain period, the device considers that the tunnel is torn down.


When setting up a tunnel, the LAC and LNS interact and negotiate with each other by exchanging control packets. If one end fails to receive the response from the peer in a specified period due to network congestion, the local end retransmits the control packet to the peer. You can configure the interval at which control packets are retransmitted and the number of retransmission times.

Perform the following steps on the NE40E:


  1. Run system-view

    The system view is displayed.

  2. Run l2tp-group group-name

    The L2TP group view is displayed.

  3. Run tunnel retransmit times

    The number of retransmission times is configured.

    Or run:

    tunnel timeout interval

    The interval at which control packets are retransmitted is configured.

    If a large number of L2TP tunnels are established, it is recommended that the timeout period for L2TP packet retransmission be set to 5 seconds.

  4. Run commit

    The configuration is committed.

Updated: 2019-01-03

Document ID: EDOC1100055031

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