Cisco NCS 2000 series Troubleshoot Manual

Figure 3: Facility Loopback on a Circuit Source MXP or TXP Port
Performing a loopback on an in-service circuit is service-affecting.
Caution
Facility loopbacks require on-site personnel.
Note
Complete the Create the Facility Loopback on the Source-Node MXP, TXP, XP or ADM-10G Port, on page
9.
Create the Facility Loopback on the Source-Node MXP, TXP, XP or ADM-10G Port
SUMMARY STEPS
1. Connect an optical test set to the port you are testing.
2. Adjust the test set accordingly. (Refer to manufacturer instructions for test set use.)
3. In node view (single-shelf mode) or shelf view (multishelf mode), double-click the card to display the
card view.
4. Click the Maintenance > Loopback tabs.
5. Choose OOS,MT (or locked,maintenance) from the Admin State column for the port being tested. If
this is a multiport card, select the appropriate row for the desired port.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
9
General Troubleshooting
Create the Facility Loopback on the Source-Node MXP, TXP, XP or ADM-10G Port

Cisco NCS 2000 series Specifications

General

Brand	Cisco
Model	NCS 2000 series
Category	Network Hardware
Language	English