Cisco ONS 15454 SDH - Page 350

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Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 13 Convert Network Configurations
NTP- D155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber MS-SPRing Manually
NTP-D155 Convert a Point-to-Point or a Linear ADM to a
Two-Fiber MS-SPRing Manually
Caution This procedure is service affecting.
Note Optical transmit and receive levels should be in their acceptable range as shown in Table 2-4 on
page 2-17.
Step 1 Complete the “DLP-D60 Log into CTC” task on page 17-49 at one of the nodes that you want to convert
from a point-to-point or linear ADM to an MS-SPRing. If you are already logged in, continue with
Step 2.
Step 2 According to local site practice, complete the “NTP-D108 Back Up the Database” procedure on
page 15-5 for each node in the configuration.
Step 3 Check for alarms and conditions. See the “DLP-D298 Check the Network for Alarms and Conditions”
task on page 19-83 for instructions.
Step 4 On the network map, right-click a span adjacent to the node you are logged into. A shortcut menu
appears.
Step 5 From the shortcut menu, click Circuits. The Circuits on Span window appears.
Step 6 Verify that the total number of active VC4 circuits does not exceed 50 percent of the span bandwidth. In
the Circuits column, there is a block titled “Unused.” This number should exceed 50 percent of the span
bandwidth.
Note If the span is an STM-16, no more than 8 VC4s can be provisioned on the span. If the span is an
STM-64, no more than 32 VC4s can be provisioned on the span. If the span is an STM-4, no
more than 2 VC4s can be provisioned on the span.
Caution If the first half of the capacity is exceeded, this procedure cannot be completed. Bandwidth must be
50 percent unassigned to convert to an MS-SPRing. Refer to local procedures for relocating circuits if
these requirements are not met.
Purpose This procedure upgrades a point-to-point configuration (two nodes) or a
linear ADM configuration (three or more nodes) to a two-fiber
MS-SPRing manually, that is, without using the in-service topology
upgrade wizard. Use this procedure if the wizard is unavailable or you
need to back out of the wizard.
Tools/Equipment None
Prerequisite Procedures NTP-D124 Provision a Point-to-Point Network, page 5-3 or
NTP-D38 Provision a Linear ADM Network, page 5-7
Required/As Needed As needed
Onsite/Remote Onsite
Security Level Provisioning or higher