Specifications

CHAPTER

15-1

Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR

OL-26895-01

Configuring Ethernet OAM, CFM, and E-LMI

Ethernet Operations, Administration, and Maintenance (OAM) is a protocol for installing, monitoring,

and troubleshooting Ethernet networks to increase management capability within the context of the

overall Ethernet infrastructure. The Cisco MWR 2941 router supports IEEE 802.1ag Connectivity Fault

Management (CFM), Ethernet Local Management Interface (E-LMI), and IEEE 802.3ah Ethernet OAM

discovery, link monitoring, remote fault detection, and remote loopback. It also supports IP Service

Level Agreements (SLAs) for CFM, and ITU-T Y.1731 fault management.

This chapter provides information about configuring CFM, E-LMI, and the Ethernet OAM protocol. It

defines the differences between the ratified CFM 802.1ag standard (draft 8.1) and the previous version,

Cisco IOS (draft 1.0). It also includes configuration information for CFM ITU-TY.1731 fault

management support in this release.

Note Release 15.0(1)MR does not support the draft 1.0 version of CFM.

For complete command and configuration information for Ethernet OAM,CFM, E-LMI, and Y.1731, see

the Cisco IOS Carrier Ethernet Configuration Guide at this URL:

http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/12_2sr/ce_12_2sr_book.html

For complete syntax of the commands used in this chapter, see the Cisco MWR 2941 Mobile Wireless

Edge Router IOS Command Reference, Release 15.0(1)MR and the Cisco IOS Carrier Ethernet

Command Reference at this URL:

http://www.cisco.com/en/US/docs/ios/cether/command/reference/ce_book.html

The Cisco MWR 2941 does not necessarily support all of the commands listed in the Cisco IOS Carrier

Ethernet documentation.

This chapter contains these sections:

• Understanding Ethernet CFM, page 15-2

• Configuring Ethernet CFM, page 15-7

• Understanding TWAMP, page 15-21

• Configuring TWAMP, page 15-22

• Understanding CFM ITU-T Y.1731 Fault Management, page 15-24

• Configuring Y.1731 Fault Management, page 15-27

• Managing and Displaying Ethernet CFM Information, page 15-29

• Understanding the Ethernet OAM Protocol, page 15-31

• Setting Up and Configuring Ethernet OAM, page 15-34

• Displaying Ethernet OAM Protocol Information, page 15-43