Cisco Systems A9014CFD manual 10-53

Chapter 10 Configuring Ethernet OAM

Understanding Ethernet Loopback

	Command or Action	Purpose
Step 1
	enable	Enables privileged EXEC mode.
		• Enter your password if prompted.
	Example:
	Router> enable
Step 2
	configure terminal	Enters global configuration mode.
	Example:
	Router# configure terminal
Step 3
	interface type number	Specifies an interface type and number to enter the interface
		configuration mode.
	Example:
	Router(config)# interface gigabitEthernet0/1
Step 4
	service instance instance-numberethernet	Creates a service instance on an interface and enters service
		instance configuration mode.
	Example:
	Router(config-if)# service instance 10 ethernet
Step 5
	encapsulation dotlq-number	Defines the matching criteria to be used in order to map the
		ingress dot1q frames on an interface to the appropriate
	Example:	service instance.
	Router(config-if-srv)# encapsulation dot1q 10
Step 6
	rewrite ingress tag pop 1 symmetric	Specifies the tag manipulation that is to be performed on the
		frame ingress to the service instance. Perform Step 7 if you
	Example:	want to configure ethernet loopback for a bridge-domain.
		Go to Step 8 if you want to configure ethernet loopback for
	Router(config-if-srv)# rewrite ingress tag pop
		cross connect.
	1 symmetric
Step 7
	bridge domain-number	Binds the service instance to a bridge domain. Perform this
		step if you want to configure ethernet loopback for a
	Example:	bridge-domain.
	Router(config-if-srv)# bridge domain 10
Step 8
	xconnect peer-ip-addressvc-idencapsulation	Binds an attachment circuit to a pseudowire, and to
	mpls	configure an Any Transport over MPLS (AToM) static
		pseudowire. Perform this step if you want to configure
	Example:	ethernet loopback for cross connect.
	Router(config-if-srv)# xconnect 1.1.1.1 100	• peer-ip-address—IP address of the remote provider
	encapsulation mpls	edge (PE) peer. The remote router ID can be any IP
		address, as long as it is reachable.
		• vc-id—The 32-bit identifier of the virtual circuit (VC)
		between the PE routers.
		• encapsulation—Specifies the tunneling method to
		encapsulate the data in the pseudowire.
		• mpls—Specifies MPLS as the tunneling method.

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09		10-53