pim dm

Function

The pim dm command enables PIM-DM on an interface.

The undo pim dm command restores the default configuration.

By default, PIM-DM is disabled on an interface.

Format

pim dm

undo pim dm

Parameters

None

Views

GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-Trunk interface view, GE sub-interface view, XGE sub-interface view, MultiGE sub-interface view, 25GE sub-interface view, 40GE sub-interface view, 100GE sub-interface view, Eth-Trunk sub-interface view, VLANIF interface view, loopback interface view, tunnel interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On a PIM-DM network, after PIM-DM is enabled on an interface, the switch can set up the PIM neighbor relationship with the neighboring device. The switch can then process protocol packets received from the PIM neighbor.

Prerequisites

IP multicast routing has been enabled using the multicast routing-enable command in the public network instance or VPN instance.

Precautions

PIM-DM and PIM-SM cannot be enabled simultaneously on interfaces bound to the same VPN instance or public network instance.
If PIM-DM and IGMP need to be enabled on the same interface, enable PIM-DM, and then enable IGMP.
If Layer 2 multicast querier or Layer 2 multicast packet suppression is enabled in a VLAN, running the pim dm command on the corresponding VLANIF interface will fail.
If both Layer 2 and Layer 3 multicast services are required in a VLAN, enable IPv4 PIM on the corresponding VLANIF interface first, and then enable IGMP snooping in the VLAN. If IGMP snooping is enabled in the VLAN first, IPv4 PIM cannot be enabled on the corresponding VLANIF interface.
PIM-DM cannot be deployed on the public network of the MVPN.

Example

# Enable PIM-DM on VLANIF100.

<HUAWEI> system-view
[HUAWEI] multicast routing-enable
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] pim dm

# Enable PIM-DM on GE0/0/1.

<HUAWEI> system-view
[HUAWEI] multicast routing-enable
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] pim dm