dpd msg notify-hash-sequence learning

Function

The dpd msg notify-hash-sequence learning command enables automatic learning of the payload sequence of DPD packets.

The undo dpd msg notify-hash-sequence learning command disables automatic learning of the payload sequence of DPD packets.

By default, automatic learning of the payload sequence of DPD packets is enabled.

Format

dpd msg notify-hash-sequence learning

undo dpd msg notify-hash-sequence learning

Parameters

None

Views

IKE peer view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When DPD is used to detect the IKEv1 peer status, the payload sequence of DPD packets on both ends must be consistent. Otherwise, DPD does not take effect, and even the IPSec tunnel between both ends flaps.

If the local end does not know the payload sequence of DPD packets sent from the remote end, run the dpd msg notify-hash-sequence learning command on the local end to enable automatic learning of the payload sequence of DPD packets. When the local end receives a DPD packet from the remote end, the local end learns the payload sequence of the DPD packet and sends a DPD packet in the same payload sequence.

Precautions

In a dual-system hot standby scenario, the backup device does not back up the payload sequence of DPD packets learned by the master device.

Example

# Enable automatic learning of the payload sequence of DPD packets.

<sysname> system-view
[sysname] ike peer huawei
[sysname-ike-peer-huawei] dpd msg notify-hash-sequence learning