Network Tests; Network Test Types - Cisco ONS 15327 User Documentation
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Also See for ONS 15327:
- Procedure manual (478 pages) ,
- Manual (42 pages) ,
- Reference manual (166 pages)
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Chapter 12
Maintenance
Use the following rules to determine if you can put the intended card in a Lock Out state:
Step 1
•
Log into the node where you will apply the Lock Out.
Step 2
In Node view, click the Maintenance > Protection tabs.
Step 3
Under Protection Groups, click on the protection group that contains the card you want to lock out.
Step 4
Step 5
Under Selected Group, click the card you want to lock traffic out of.
Step 6
From Inhibit Switching, click on Lock Out.
Click Yes on the confirmation dialog box.
Step 7
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
Procedure: Clear a Lock On or Lock Out
Step 1
Log into the node where you will clear the Lock Out or Lock On.
Click the Maintenance > Protection tabs.
Step 2
Under Protection Groups, click the protection group that contains the card you want to clear.
Step 3
Under Selected Group, click the card you want to clear.
Step 4
From Inhibit Switching, click Unlock.
Step 5
Click Yes on the confirmation dialog box.
Step 6
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.
On OC-N cards, the entire card is put into loopback rather than an individual STS. Exercise caution
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.
June 2002
For a 1+1 optical protection group, only the protect card can be placed in the Lock Out state.
Figure 12-10
shows a facility loopback on an XTC-14 or XTC-28-3 card.
12-19.
Cisco ONS 15327 User Documentation, R3.3
Network Tests
12-19
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