Specifications

3-17
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 3 Maintenance
XC Card to XCVT Card Upgrade
Wait for the TCC to reboot. The ONS 15454 switches the standby TCC+ card to active mode.
Step 4 Verify that the remaining TCC card is now in standby mode (the ACT/STBY LED changes to amber).
Step 5 Physically replace the remaining TCC card with the second TCC+ card.
a. Open the TCC card ejectors.
b. Slide the card out of the slot.
c. Open the ejectors on the TCC+ card.
d. Slide the TCC+ card into the slot along the guide rails.
e. Close the ejectors.
The ONS 15454 boots up the second TCC+ card. The second TCC+ must also copy the system software,
which can take up to 20 or 30 minutes. The MEA alarm clears when the ONS 15454 recognizes the
matching TCC+s.
3.9 XC Card to XCVT Card Upgrade
This section explains how to replace dual XC cards with dual XCVT cards in an ONS 15454 with live
traffic. The procedure is non-service affecting, that is, the upgrade will cause a switch less than 50 ms
in duration.
Note The UNEQ-P alarm might be raised during a cross-connect card upgrade if you have E100/E1000
cards in the system. The alarm will appear and clear within a few seconds.
Procedure: Upgrade the XC Card to the XCVT Card
Upgrading XC cards to XCVT requires that the ONS 15454 is running CTC Release 2.0 or later. Two
XC cards must be installed in the ONS 15454, and two XCVT cards must be available for installation.
An XC switch can cause a linear 1+1 OC-N protection switch or a BLSR protection switch.
Step 1 Take the following precautions before performing an XC switch to avoid causing a linear 1+1 or BLSR
protection switch:
a. Ensure the working span is active on both the local and remote nodes.
b. Ensure the working span is carrying error-free traffic (no SD or SF alarms present).
c. Lockout the protection span prior to initiating an XC reset.
In a BLSR, place a lockout on the East and West cards of the nodes adjacent to the XC switch node;
for example, to switch the XC on Node B, place the lockout on the West card of Node A and on the
East card of Node C. No lockout is necessary on Node B. Before the lockout is set, verify that the
BLSR is not switched. If a lockout is set while the BLSR is switched, traffic can be lost.
<------East [Node A] West------East [Node B] West------East [Node C] West------>
In a 1+1 protection scheme, place a lockout on the protect card and verify that the traffic is traveling
over the working span before setting the lockout.
Step 2 Determine the standby XC card. The ACT/STBY LED of the standby XC card is amber, while the
ACT/STBY LED of the active XC card is green.