Inhibit Protection Switching - Cisco ONS 15327 User Documentation

Inhibit Protection Switching

c.
d.
e.
The forced switch clears and traffic is running. If you have lost traffic, perform a downgrade. The
procedure for downgrading is the same as upgrading except that you choose a
lower-rate/intermediate-reach card.
Note
Repeat these steps for the other line in the 1+1.
Step 11
When the other line in the 1+1 has been upgraded, the span upgrade is complete.
12.8 Inhibit Protection Switching
This procedure describes how to apply a lock on or lock out and how to remove a lock on or lock out on
OC-12 or OC-48 protection groups.
Procedure: Apply a Lock On
Step 1 Use the following rules to determine if you can put the intended card in a Lock On state:
•
Step 2 Log into the node where you will apply the Lock On.
Click the Maintenance > Protection tabs.
Step 3
Under Protection Groups, click on the protection group where you want to apply a lock on.
Step 4
If you determine that the protect card is inactive and you want to apply the lock on to the protect card,
Step 5
make the protect card active:
a.
b.
Under Selected Group, click the active card you want to lock traffic onto.
Step 6
From Inhibit Switching, click on Lock On.
Step 7
Step 8 Click Yes on the confirmation dialog box.
The Lock On has been applied and traffic cannot be switched to the opposite card. To clear the Lock On,
see the
Procedure: Apply a Lock Out
Multiple Lock Outs in the same protection group is not allowed.
Note
Cisco ONS 15327 User Documentation, R3.3
12-18
Under Selected Group, choose the port with the force on it.
From Switch Commands, click Clear.
Click Yes on the confirmation dialog box.
You cannot downgrade if circuits exist on the STSs that you will remove (the higher STSs).
For a 1+1 optical protection group, only the working card can be placed in the Lock On state.
Under Selected Group, click the protect card.
Under switch Commands, click Switch.
"Clear a Lock On or Lock Out" procedure on page
Chapter 12
12-19.
Maintenance
June 2002