Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño

OL-4556-01

 

84

 

Topology conversions are service affecting.  In-service topology conversions will be 

provided in a future system release. 
 
For explanations on how to convert from one network topology to another, refer to the following 
procedures in the Cisco ONS 15454 Procedure Guide: 
 

1.  NTP-154 Upgrade a Point-to-Point to a Linear ADM. 
2.  NTP-155 Upgrade a Point-to-Point or a Linear ADM to a Two-Fiber BLSR. 
3.  NTP-156 Upgrade a Point-to-Point or Linear ADM to a Path Protection Configuration. 
4.  NTP-157 Upgrade a Path Protection Configuration to a BLSR. 
5.  NTP-158 Upgrade a Two-Fiber BLSR to a Four-Fiber BLSR. 
6.  NTP-159 Modify a BLSR. 

 

 
In a point-to-point configuration, two OC-N cards are connected to two OC-N cards on a second 
node.  Any multispeed slot (OC-3, OC-12, OC12-4, OC48AS cards only) or high-speed slot (any 
OC-N card except the OC12-4) can be used if connections between nodes are consistent.  For 
example, Slot 5 on the first point-to-point node connects to Slot 5 on the second point-to-point 
node for the working path, and Slot 6 connects to Slot 6 for the protect path.  The OC-N ports 
have DCC terminations, and the OC-N cards are in a 1+1 protection group. 
 

 
An OC-12, OC-48, and OC-192 Point-to-Point or a Linear ADM can be converted to a 2-Fiber 
BLSR.  Prior to beginning this conversion you should have assigned a unique Ring ID number to 
identify the new BLSR and a unique Node ID number for each node on the ring. 
 
At least 50% of the available bandwidth must be unassigned to convert to a BLSR.  For example, 
if the span is an OC-48, no more than 24 STSs can be provisioned on the span.  If the span is an 
OC-192, no more than 96 STSs can be provisioned on the span.  If the span is an OC-12, no 
more than 6 STSs can be provisioned on the span.  Refer to your local procedures for relocating 
circuits if these requirements are not met.  Bridge and roll will be supported in a future system 
release. 
 

 
When converting a Point-to-Point or Linear ADM to a Path Protection Configuration, all circuits 
will be deleted and re-provisioned. 
 

 
An OC-12, OC-48, and OC-192 Path Protection Configuration can be converted to a BLSR.  
When converting a Path Protection Configuration to a BLSR, all circuits will be deleted and re-
provisioned.  Prior to beginning this conversion you should have assigned a unique Ring ID 
number to identify the new BLSR and a unique Node ID number for each node on the ring. 
 
At least 50% of the available bandwidth must be unassigned to convert to a BLSR.  For example, 
if the span is an OC-48, no more than 24 STSs can be provisioned on the span.  If the span is an 
OC-192, no more than 96 STSs can be provisioned on the span.  If the span is an OC-12, no 
more than 6 STSs can be provisioned on the span.  Refer to your local procedures for relocating