Specifications

5-36
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 5 AXSM Command Reference
addpart
addpart
Add Resource Partition—AXSM, AXSM-E, AXSM-32-T1E1-E, AXSM-XG
Add a resource partition. Before you add a partition, be sure you have a plan for future developments,
such as the addition of a new controller.
Note The addpart and addrscprtn commands are identical.
A resource partition consists of:
• Guaranteed percentage of bandwidth.
• VPI and VCI ranges. For MPLS (or LSC), Cisco Systems recommends a minimum VCI of 35.
• Guaranteed minimum and maximum number of connections. The maximum number of connections
must be greater than 10.
Before adding a resource partition, you must:
• Activate physical lines on the card (upln and optional cnfln).
• Add logical ports to the physical lines (addport and optional cnfport).
• Execute addcontroller on the PXM45 to identify the controller type to the Virtual Switch Interface
(VSI) and give that controller an ID number. The addpart command takes this controller ID as an
argument.
Note For VNNIs (virtual trunks), you can configure one VNNI per port and one port per partition. Specify the
VNNI interface type through the addport command.
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 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 60%.
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 MPLS partition
without bringing down the port using the dnport command to change the PNNI VPI/VCI ranges.
Bringing down a port on a live network is usually not an option.