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3-41
Cisco ATM Services (AXSM) Configuration Guide and Command Reference for MGX Switches
Release 5.2, Part Number OL-6484-01 Rev. C0, September 2005
Chapter 3 Provisioning ATM Services
General AXSM Configuration Procedures
After you create a port, you must create a resource partition for that port, and select either the MPLS or
the PNNI controller. Also, which ATM resources the port will use must be defined.
The controller partition is automatically created when you create the first resource partition. It is
important that the same controller partition, and, therefore, the same partition ID, be used for all resource
partitions of the same type on the same AXSM card. For example, the controller is identified by the
controller ID and the controller partition is identified by the partition ID. The resource partitions are
identified by specifying the partition ID in combination with the port ID (interface number).
Figure 3-4 Relationship of Port Controller, Controller Partition, and Resource Partitions
Important VPI/VCI Range Issues
When configuring a partition, be sure to configure the VPI/VCI ranges to meet your actual usage
requirements. It is important that you do not configure the entire VPI/VCI range for a single partition.
The ability to seamlessly add new partitions in the future depends on configuring only the necessary
ranges for each partition.
The Cisco recommended ranges for a single partition are as follows:
For a VPI on a UNI port where the available range is 0–255, the recommended configured range is
0–140.
For a VPI on a PNNI port where the range is 0–4096, the recommended configured range is 0–2500
or about 60percent.
Caution When adding or configuring a PNNI partition, do not configure the entire VPI/VCI range for one
partition. In the future, if you migrate from a PNNI only service to a PNNI/MPLS service with multiple
partitions, you will need the additional VPI/VCI ranges to be able to add a new partition.
If you configure all of the available ranges for the PNNI partition, you will not be able to add a new
42939
Controller partition
(partition ID)
Resource partition port 1
(interface number
and partition ID)
MPSM-T3E3-155 card
PXM card
Resource partition port 2
(interface number
and partition ID)
Resource partitions for
additional ports
Port controller
(controller ID)
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