Specifications

7-70
Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Chapter 7 Switch Operating Procedures
Managing Priority Routing
Step 5 Enter the uppnport command to bring up the PNNI port you just configured.
pop20two.8.PXM.a > dsppnportrange <portid>
Replace <portid> using the formate slot:bay.line:ifNum. Table 8-1 describes these parameters.
Step 6 To display the PNNI port range for a port, enter the dsppnportrange <portid> command.
pop20two.8.PXM.a > dsppnportrange 1:2.1:2
After you enter the command, the switch displays a report similar to the following example:
minSvccVpi: 0 maxSvccVpi: 4095
minSvccVci: 35 maxSvccVci: 65535
minSvpcVpi: 1 maxSvpcVpi: 4095
Managing Priority Routing
When an SPVC is created, it can be prioritized so that the user has more control over the sequence in
which connections are routed, rerouted, and de-routed in the network. Routing priorities are set in a
range from 0 through 15, with 0 being the highest priority and 15 being the lowest priority. 0 priority is
reserved for networking control connections, while priorities 1 through 15 can be assigned to user
connections.
Within the priority categories of 0 through15, connections are further divided into groups based on their
bandwidth. Connections requiring more bandwidth are routed before those requiring less bandwidth.
The number of bandwidth groups is fixed at 50, but you can specify the following:
• The range with the lowest bandwidth requirement
• The range of cells per second in each range between the highest and lowest ranges.
Because the bandwidth groups are node-level, they apply to all priorities: the same ranges exist for
priority 0, priority 1, priority 2, and so on down to the lowest priority. Connections requiring the least
bandwidth are grouped at the low end of the range, and connections requiring the most bandwidth are
grouped at the top end of the range. The remaining connections are progressively grouped somewhere
between the upper and lower bounds.
min-svpc-vpi Minimum VPI value for SVPC.
Range: 1to4095.
Default = 1.
max-svpc-vpi Maximum VPI value for SVPC.
Range: 1to4095.
Default = 4095.
Table 7-35 Parameters for the cnfpnportrange Command (continued)
Parameter Description