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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 3 Node Setup
Creating Protection Groups
Based on these selections, a list of available working cards or ports is displayed under Available Cards
or Available Ports. Figure 3-6 shows a 1+1 protection group.
Figure 3-6 Creating a 1+1 protection group
Step 4
From the Available Cards or Available Ports list, choose the card or port that you want to be the working
card or port (the card(s) or port(s) that will be protected by the card or port selected in Protect Cards or
Protect Ports). Click the top arrow button to move each card/port to the Working Cards or Working Ports
list.
Step 5 Complete the remaining fields:
• Bidirectional switching—(optical cards only) click if you want both the transmit and the receive
channels to switch if a failure occurs to one.
• Revertive—if checked, the ONS 15454 reverts traffic to the working card or port after failure
conditions stay corrected for the amount of time entered in Reversion Time.
• Reversion time—if Revertive is checked, enter the amount of time following failure condition
correction that the ONS 15454 should switch back to the working card or port.
Step 6 Click OK.
Note To convert protection groups, see the “Converting DS-1 and DS-3 Cards From 1:1 to 1:N
Protection” section on page 7-30.
Card protection does not take effect until you enable the ports on all the cards in the protection group.
Because ports must be enabled before the cards carry traffic, you can enable the ports immediately after
provisioning card protection, or wait until you are ready to send traffic on the cards.
Caution Before running traffic on a card within a protection group, enable the ports of all protection group
cards.
Procedure: Enable Ports
Step 1 Log into the node in CTC and display the card you want to enable in card view.