Specifications

3-14
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 3 Maintenance
Card Replacement
3.7 Card Replacement
To replace an ONS 15454 card with another card of the same type, you do not need to make any changes
to the database; remove the old card and replace it with a new card. To replace a card with a card of a
different type, physically remove the card and replace it with the new card, then delete the original card
from CTC. Follow the “Switch Traffic and Replace an In-Service Cross-Connect Card” procedure on
page 3-14 to replace an XC/XCVT card.
Caution Removing any active card from the ONS 15454 can result in traffic interruption. Use caution when
replacing cards and verify that only inactive or standby cards are being replaced. If the active card
needs to be replaced, switch it to standby prior to removing the card from the node.
Note An improper removal (IMPROPRMVL) alarm is raised whenever a card pull is performed, unless
the card is deleted in CTC first. The alarm will clear after the card replacement is complete.
Note In a UPSR, pulling the active XC/XCVT/XC10G without a lockout will cause UPSR circuits to
switch.
Warning Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard.
To upgrade cards, refer to the specific upgrade procedure you need:
• “TCC Card to TCC+ Card Upgrade” section on page 3-15
• “XC Card to XCVT Card Upgrade” section on page 3-17
• “XC/XCVT Card to XC10G Card Upgrade” section on page 3-18
• “DS3/DS3N Card to DS3E/DS3EN Card Upgrade” section on page 3-20
For more information on cards and card compatibility see Chapter 4, “Card Reference.”
Procedure: Switch Traffic and Replace an In-Service Cross-Connect Card
Caution Removing any active card from the ONS 15454 can result in traffic interruption. Use caution when
replacing cards and verify that only inactive or standby cards are being replaced. If the active card
needs to be replaced, follow the steps below to switch the XC/XCVT card to standby prior to
removing the card from the node.
An XC/XCVT reset 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/XCVT reset 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).