Cisco ONS 15454 SDH Procedure Manual page 339

Chapter 12 Upgrade Cards and Spans
Onsite/Remote
Security Level
If you want to upgrade all of the spans in a ring, determine if there are any four-port STM-4 cards in the
Caution
ring. If the ring contains any STM4-4 cards and you wish to continue with the upgrade, you will have to
downgrade the STM4-4 card to a single-port STM-4 card (which is not possible unless only one port on
the STM4-4 card is being used).
Optical card transmit and receive levels should be in their acceptable range as shown for each card in
Note
Table 2-4 on page
In this context the word "span" represents the optical path between two nodes. The words "span
Note
endpoint" represent the nodes on each end of a span.
If any of the cross-connect cards reboot during the span upgrade, you must reset each one when the span
Note
upgrade procedure is complete for all the nodes in the ring.
Determine the span upgrade you need to perform. Valid span upgrades include:
Step 1
Four-port STM-1 to eight-port STM-1
•
Single-port STM-4 to four-port STM-4
•
Single-port STM-4 to STM-16
•
Single-port STM-4 to STM-64
•
Single-port STM-4 to MRC-12
•
• STM-16 to STM-64
• STM-64 to OC192SR1/STM64IO Short Reach or OC192/STM64 Any Reach
Note
Step 2 Complete the
Step 3.
Ensure that no alarms or abnormal conditions (regardless of severity), including LOS, LOF, AIS-L, SF,
Step 3
SD, and FORCED-REQ-RING are present. See the
Conditions" task on page 19-83
Note
78-17194-01
Onsite
Provisioning or higher
2-17.
Do not upgrade an STM-16 to an STM-64 if you have XC-VXL-2.5Gs installed. The
XC-VXL-2.5G works only with card speeds up to STM-16.
"DLP-D60 Log into CTC" task on page
for instructions.
During the upgrade/downgrade some minor alarms and conditions display and then clear
automatically. No service-affecting alarms (SA, Major, or Critical) should occur other than
MSSP-OSYNC, which will clear when the upgrade/downgrade of all nodes is complete. If any
other service-affecting alarms occur, Cisco recommends backing out of the procedure. A
four-node MS-SPRing can take up to five minutes to clear all of the MSSP-OSYNC alarms.
Allow extra time for a large MS-SPRing to clear all of the MSSP-OSYNC alarms.
NTP- D95 Upgrade Optical Spans Manually
17-49. If you are already logged in, continue with
"DLP-D298 Check the Network for Alarms and
Cisco ONS 15454 SDH Procedure Guide, R7.0
12-11