display erps statistics

Function

The display erps statistics command displays statistics about sent and received ring auto protection switching (R-APS) protocol data units (PDUs) on the ports that have been added to ERPS rings.

Format

display erps [ ring ring-id ] statistics

Parameters

Parameter	Description	Value
ring ring-id	Specifies the ID of an ERPS ring.	The value is an integer ranging from 1 to 255.

Parameter

Description

Value

ring ring-id

Specifies the ID of an ERPS ring.

The value is an integer ranging from 1 to 255.

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
erps	read

Usage Guidelines

Usage Scenario

To monitor the network running status and maintain devices on a Layer 2 network running ERPS, run the display erps statistics command.

Prerequisites

The ERPS ring to be queried has been created.

Example

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

# Display statistics about sent and received R-APS PDUs on the ports that have been added to ERPS ring 2.

<HUAWEI> display erps ring 2 statistics
- -------------------------------------------------------------------------------
Ring  Port           RX/TX       SF       NR     NRRB       FS       MS    EVENT
- -------------------------------------------------------------------------------
   2  GE0/1/1       RX           0        1        0        0        0        0
   2  GE0/1/1       TX           4       74        0        0        0        0

# Display statistics about sent and received R-APS PDUs on the ports that have been added to ERPS rings.

<HUAWEI> display erps statistics
- -------------------------------------------------------------------------------
Ring Port            RX/TX       SF       NR     NRRB       FS       MS    EVENT
- -------------------------------------------------------------------------------
   1 Eth-Trunk1      RX           0        0      552        0        0        0
   1 Eth-Trunk1      TX           0       68        0      326        0        6
   1 GE0/1/1         RX           0        6      552        0        0        0
   1 GE0/1/1         TX           4       63        0      326        0        6
  10 GE0/1/2         RX           0        1        0        0        0        0
  10 GE0/1/2         TX           4       74        0        0        0        0

**Table 1** Description of the **display erps statistics** command output
Item	Description
Ring	ID of the ERPS ring.
Port	Port that is added to the ERPS ring.
RX/TX	R-APS PDU forwarding direction: RX: R-APS PDUs are received. TX: R-APS PDUs are sent.
SF	Statistics about R-APS (SF) messages.
NR	Statistics about R-APS (NR) messages.
NRRB	Statistics about R-APS (NR, RB) messages.
FS	Statistics about R-APS (FS) messages.
MS	Statistics about R-APS (MS) messages.
EVENT	Statistics about packets sent by the intersected node on the major ring to notify other nodes on the major ring when the intersected node on the major ring detects the topology change on the sub-ring in a multi-ring scenario.