rrpp snooping enable

Function

The rrpp snooping enable command enables RRPP snooping on an interface.

The undo rrpp snooping enable command disables RRPP snooping on an interface.

By default, RRPP snooping is disabled on an interface.

Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H support this command.

Format

rrpp snooping enable

undo rrpp snooping enable

Parameters

None

Views

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

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When an RRPP ring accesses the virtual private LAN service (VPLS) network in which devices are connected using PWs, the device cannot respond to RRPP protocol packets directly. Therefore, the VPLS network cannot sense the status change of the RRPP ring. When the RRPP ring topology changes, each node in the VPLS network forwards downstream data according to the MAC address table generated before the RRPP ring topology changes. As a result, the downstream traffic cannot be forwarded. When RRPP snooping is configured on sub-interfaces or VLANIF interfaces, the VPLS network can transparently transmit RRPP protocol packets, detect the changes on the RRPP rings, and upgrade the forwarding entries to ensure that traffic is switched in time to a congestion-free path.

When an RRPP network and a VPLS network are connected to form a network, you can run the rrpp snooping enable command to enable RRPP snooping on interfaces of the devices deployed on the network.

Precautions

Before running the rrpp snooping enable command, ensure that the following configurations are completed on the sub-interface or VLANIF interface:

Binding the sub-interface or VLANIF interface to a VSI using the l2 binding vsi vsi-name command in the interface view.
Specifying that the sub-interface or VLANIF interface permits only the packets in the control VLAN of the RRPP domain to pass through.

After you run the rrpp snooping enable command, RRPP snooping is automatically associated with the VSI bound to this interface.

When RRPP snooping is enabled on the interface, the status of the RRPP ring can be detected through RRPP control packets. When the RRPP ring status changes, the VSI can receive a notification and update the MAC address table.

RRPP and RRPP snooping cannot be simultaneously configured on the same interface.

Example

# Enable RRPP snooping on an interface.

<HUAWEI> system-view
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] rrpp snooping enable