display rrpp snooping enable

Function

The display rrpp snooping enable command displays RRPP snooping-enabled interfaces.

Format

display rrpp snooping enable { all | interface { interface-name | interface-type interface-number } }

Parameters

Parameter	Description	Value
all	Indicates all RRPP snooping-enabled interfaces.	-
interface interface-type interface-number	Specifies the type and number of an interface.	-

Parameter

Description

Value

all

Indicates all RRPP snooping-enabled interfaces.

interface interface-type interface-number

Specifies the type and number of an interface.

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
rrpp	read

Usage Guidelines

Usage Scenario

When an RRPP ring accesses the virtual private LAN service (VPLS) network in which devices are connected using pseudo wires (PWs), the device cannot respond 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.

You can run the display rrpp snooping enable command to view the interfaces that are enabled with RRPP snooping.

Example

The actual command output varies according to the device. The command output here is only an example.

# View sub-interfaces that are enabled with RRPP snooping.

<HUAWEI> display rrpp snooping enable interface gigabitethernet0/1/1.1
Port                 VsiName           Vlan     
-------------------------------------------------------- 
GE0/1/1.1            name1             100

# View all interfaces that are enabled with RRPP snooping.

<HUAWEI> display rrpp snooping enable all
Port                 VsiName           Vlan     
-------------------------------------------------------- 
GE0/1/1.1            name1             100 
GE0/1/9.1            name2             200

**Table 1** Description of the **display rrpp snooping enable** command output
Item	Description
Port	Indicates the name of the interface that is enabled with RRPP snooping.
VsiName	Indicates the name of the VSI that is bound to the interface.
Vlan	Indicates the VLAN that is associated with the interface. It refers to the control VLAN of the RRPP ring.