Cisco NCS 4200 Series - Verifying Ethernet Data Plane Loopback

This example shows internal (terminal) loopback on Gigabit Ethernet 0/0/0 interface:
interface TenGigabitEthernet0/0/0
no ip address
service instance 10 ethernet
encapsulation dot1q 10
rewrite ingress tag pop 1 symmetric
bridge-domain 10
ethernet loopback permit internal
!
end
Verifying Ethernet Data Plane Loopback
Example: Verifying Ethernet Dataplane Loopback
Use the show ethernet loopback {active | permitted} [interface interface number] command.
•
The following example displays the loopback capabilities per interface. The output shows internal
(terminal) loopback has been permitted on Ten Gigabit Ethernet 0/0/0 interface and external (facility)
loopback has been permitted on Gigabit Ethernet 0/4/1 interface.
Router# show ethernet loopback permitted
--------------------------------------------------------------------------------
Interface SrvcInst Direction
Dot1q/Dot1ad(s) Second-Dot1q(s)
--------------------------------------------------------------------------------
Te0/0/0 10 Internal
10
Gi0/4/1 10 External
10
•
This example shows all active sessions on the router.
Router# show ethernet loopback active
============================================================
Loopback Session ID : 1
Interface : GigabitEthernet0/4/1
Service Instance :10
Direction : External
Time out(sec) : none
Status : on
Start time : 10:31:09.539 IST Mon Aug 26 2013
Time left : N/A
Dot1q/Dot1ad(s) : 10
Second-dot1q(s) :
Source Mac Address : Any
Destination Mac Address : 0000.0000.0001
Ether Type : Any
Class of service : 1
Llc-oui : Any
Total Active Session(s) : 1
Total Internal Session(s) : 0
Total External Session(s) : 1
•
This example shows how to stop the sessions on the router.
Router# ethernet loopback stop local interface GigabitEthernet
0/4/1 id 1
Layer 2 Configuration Guide for Cisco NCS 4200 Series
5
Configuring Ethernet Dataplane Loopback
Verifying Ethernet Data Plane Loopback