12-19
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 12 Maintenance
Network Tests
Step 1
Use the following rules to determine if you can put the intended card in a Lock Out state:
•
For a 1+1 optical protection group, only the protect card can be placed in the Lock Out state.
Step 2
Log into the node where you will apply the Lock Out.
Step 3
In Node view, click the
Maintenance > Protection
tabs.
Step 4
Under Protection Groups, click on the protection group that contains the card you want to lock out.
Step 5
Under Selected Group, click the card you want to lock traffic out of.
Step 6
From Inhibit Switching, click on
Lock Out
.
Step 7
Click
Yes
on the confirmation dialog box.
The lock out has been applied and traffic is switched to the opposite card. To clear the Lock Out, see the
“Clear a Lock On or Lock Out” procedure on page 12-19
Procedure: Clear a Lock On or Lock Out
Step 1
Log into the node where you will clear the Lock Out or Lock On.
Step 2
Click the
Maintenance > Protection
tabs.
Step 3
Under Protection Groups, click the protection group that contains the card you want to clear.
Step 4
Under Selected Group, click the card you want to clear.
Step 5
From Inhibit Switching, click
Unlock
.
Step 6
Click
Yes
on the confirmation dialog box.
The Lock On or Lock Out is cleared.
12.9 Network Tests
Use loopbacks and hairpins to test newly-created circuits before adding live traffic or to logically isolate
the source of a network failure. All ONS 15327 line (traffic) cards, except Ethernet cards, allow
loopbacks and hairpins.
Caution
On OC-N cards, the entire card is put into loopback rather than an individual STS. Exercise caution
when using loopbacks on an OC-N card carrying live traffic.
12.9.1 Network Test Types
A facility loopback tests the line interface of a card and related cabling. To test, put a facility loopback
on a card and use a test set to run traffic over the loopback. A successful facility loopback eliminates the
line interface of the card or cabling plant as the cause or potential cause of a network problem. In the
ONS 15327 system, the Mechanical Interface (MIC-28-3-A or MIC-28-3-B) card contain ports for DS-1
or DS-3 traffic.
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...
