Contents

Introduction· 1

Prerequisites· 1

Example: Configuring Ethernet OAM·· 1

Network configuration· 1

Analysis· 1

Applicable hardware and software versions· 1

Restrictions and guidelines· 3

Procedures· 3

Configuring Device A· 3

Configuring Device B· 4

Verifying the configuration· 4

Configuration files· 5

 

Introduction

This document provides Ethernet OAM configuration examples.

Ethernet OAM is a tool that monitors the status of the link between two directly connected devices.

Prerequisites

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of Ethernet OAM.

Example: Configuring Ethernet OAM

Network configuration

As shown in Figure 1, the edge devices Device A and Device B connect the enterprise network and the carrier network. Configure Ethernet OAM on Device A and Device B to meet the following Service Level Agreement (SLA) requirements:

·     Device A and Device B automatically monitor the link between them.

·     The administrator can view critical link events on the link between Device A and Device B.

·     The administrator can obtain the link status by observing link error event statistics.

Figure 1 Network diagram

 

Analysis

For Device A to establish an Ethernet OAM connection with Device B, configure GE 1/0/1 on Device A to operate in active mode, and configure GE 1/0/1 on Device B to operate in passive mode.

To implement link event detection based on the network environment, configure errored frame event detection parameters and use global settings for other detection parameters.

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

 

Hardware	Software version
S6812 series S6813 series	Release 66xx
S6550XE-HI switch series	Release 6008 and later
S6525XE-HI switch series	Release 6008 and later
S5850 switch series	Not supported
S5570S-EI switch series	Release 11xx
S5560X-EI switch series	Release 63xx, Release 65xx, Release 66xx
S5560X-HI switch series	Release 63xx, Release 65xx, Release 66xx
S5500V2-EI switch series	Release 63xx, Release 65xx, Release 66xx
MS4520V2-30F switch	Release 63xx, Release 65xx, Release 66xx
MS4520V2-30C switch MS4520V2-54C switch	Release 65xx, Release 66xx
MS4520V2-28S switch MS4520V2-24TP switch	Release 63xx
S6520X-HI switch series S6520X-EI switch series	Release 63xx, Release 65xx, Release 66xx
S6520X-SI switch series S6520-SI switch series	Release 63xx, Release 65xx, Release 66xx
S5000-EI switch series	Release 63xx, Release 65xx, Release 66xx
MS4600 switch series	Release 63xx, Release 65xx, Release 66xx
ES5500 switch series	Release 63xx, Release 65xx, Release 66xx
S5560S-EI switch series S5560S-SI switch series	Release 63xx
S5500V3-24P-SI S5500V3-48P-SI	Release 63xx
S5500V3-SI switch series (excluding S5500V3-24P-SI and S5500V3-48P-SI)	Release 11xx
S5170-EI switch series	Release 11xx
S5130S-HI switch series S5130S-EI switch series S5130S-SI switch series S5130S-LI switch series	Release 63xx
S5120V2-SI switch series S5120V2-LI switch series	Release 63xx
S5120V3-EI switch series	Release 11xx
S5120V3-36F-SI S5120V3-28P-HPWR-SI S5120V3-54P-PWR-SI	Release 11xx
S5120V3-SI switch series (excluding S5120V3-36F-SI, S5120V3-28P-HPWR-SI, and S5120V3-54P-PWR-SI)	Release 63xx
S5120V3-LI switch series	Release 63xx
S3600V3-EI switch series	Release 11xx
S3600V3-SI switch series	Release 11xx
S3100V3-EI switch series S3100V3-SI switch series	Release 63xx
S5110V2 switch series	Release 63xx
S5110V2-SI switch series	Release 63xx
S5000V3-EI switch series S5000V5-EI switch series	Release 63xx
S5000E-X switch series S5000X-EI switch series	Release 63xx
E128C switch E152C switch E500C switch series E500D switch series	Release 63xx
MS4320V2 switch series MS4320V3 switch series MS4300V2 switch series MS4320 switch series MS4200 switch series	Release 63xx
WS5850-WiNet switch series	Release 63xx
WS5820-WiNet switch series WS5810-WiNet switch series	Release 63xx
WAS6000 switch series	Release 63xx
IE4300-12P-AC switch IE4300-12P-PWR switch IE4300-M switch series IE4320 switch series	Release 63xx

 

Restrictions and guidelines

To change the Ethernet OAM mode on an Ethernet OAM-enabled port, first disable Ethernet OAM on the port.

Procedures

Configuring Device A

# Configure GigabitEthernet 1/0/1 to operate in active Ethernet OAM mode (default mode), and enable Ethernet OAM for it.

<DeviceA> system-view

[DeviceA] interface gigabitethernet 1/0/1

[DeviceA-GigabitEthernet1/0/1] oam mode active

[DeviceA-GigabitEthernet1/0/1] oam enable

# Set the errored frame event detection window to 20000 milliseconds, and set the errored frame event triggering threshold to 10 on GigabitEthernet 1/0/1.

[DeviceA-GigabitEthernet1/0/1] oam errored-frame window 200

[DeviceA-GigabitEthernet1/0/1] oam errored-frame threshold 10

[DeviceA-GigabitEthernet1/0/1] quit

Configuring Device B

# Configure GigabitEthernet 1/0/1 to operate in passive Ethernet OAM mode, and enable Ethernet OAM for it.

<DeviceB> system-view

[DeviceB] interface gigabitethernet 1/0/1

[DeviceB-GigabitEthernet1/0/1] oam mode passive

[DeviceB-GigabitEthernet1/0/1] oam enable

[DeviceB-GigabitEthernet1/0/1] quit

Verifying the configuration

# Display Ethernet OAM configuration globally and on ports that do not use the default configuration.

[DeviceA] display oam configuration

---------------- [Global] ----------------

 OAM timers

   Hello timer        : 1000 milliseconds

   Keepalive timer    : 5000 milliseconds

 Link monitoring

   Errored symbol period

     Window           : 100 x 1000000 symbols

     Threshold        : 1 error symbols

   Errored frame

     Window           : 10 x 100 milliseconds

     Threshold        : 1 error frames

   Errored frame period

     Window           : 1000 x 10000 frames

     Threshold        : 1 error frames

   Errored frame seconds

     Window           : 600 x 100 milliseconds

     Threshold        : 1 error seconds

 

----------- [GigabitEthernet1/0/1] -----------

 OAM timers

   Hello timer        : 1000 milliseconds

   Keepalive timer    : 5000 milliseconds

 Link monitoring

   Errored symbol period

     Window           : 100 x 1000000 symbols

     Threshold        : 1 error symbols

   Errored frame

     Window           : 200 x 100 milliseconds

     Threshold        : 10 error frames

   Errored frame period

     Window           : 1000 x 10000 frames

     Threshold        : 1 error frames

   Errored frame seconds

     Window           : 600 x 100 milliseconds

     Threshold        : 1 error seconds

# Display the statistics for critical Ethernet OAM link events that occurred on all ports of Device A.

[DeviceA] display oam critical-event

----------- [GigabitEthernet1/0/1] -----------

 Local link status   : UP

 Event statistics

   Link fault        : Not occurred

   Dying gasp        : Not occurred

   Critical event    : Not occurred

The output shows that no critical link event has occurred on the link between Device A and Device B.

# Display Ethernet OAM link event statistics for the local end of Device A.

[DeviceA] display oam link-event local

----------- [GigabitEthernet1/0/1] -----------

 Link status: UP

 OAM local errored frame event

   Event time stamp        : 5789 x 100 milliseconds

   Errored frame window    : 200 x 100 milliseconds

   Errored frame threshold : 10 error frames

   Errored frame           : 13 error frames

   Error running total     : 350 error frames

   Event running total     : 17 events

The output shows the following information:

·     350 errors have occurred after Ethernet OAM is enabled on Device A.

·     17 errors are caused by error frames.

·     The link is unstable.

 

	NOTE: If the link is unstable, contact HPE Support.

 

Configuration files

NOTE: Support for the port link-mode bridge command depends on the device model.

 

·     Device A:

#

interface GigabitEthernet1/0/1

 port link-mode bridge

 oam errored-frame window 200

 oam errored-frame threshold 10

 oam enable

·     Device B:

#

interface GigabitEthernet1/0/1

 port link-mode bridge

 oam mode passive

 oam enable