Specifications

8-41
Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 8 Managing PNNI Nodes and PNNI Routing
Managing Connection Grooming
The following example enables orderly grooming, sets the batch size to 20, and sets the batch processing
period to five minutes. The dspndrteopt command displays the configuration settings.
PXM1E_SJ.7.PXM.a > cnfndrteopt -og enable -ogbatchsz 20 -ogtimeout 300
PXM1E_SJ.7.PXM.a > dspndrteopt
Nodal Route Optimization Parameters:
------------------------------------
Orderly Grooming Feature: Enabled
Orderly Grooming Batch Size: 20
Orderly Grooming Timeout: 300
Trunk Util Threshold Percent: 100
Soft Reroute: Disabled
Configuring the Trunk Utilization Limit
The trunk utilization limit feature is introduced in Release 5. The purpose of this feature is to prevent
the grooming of connections to overloaded trunks.
Trunk utilization is the percentage of bandwidth is in use and is calculated by dividing the bandwidth in
use by the maximum bandwidth available. The trunk utilization limit defines a trunk usage level above
which grooming is denied for all connections that use trunks operating above the utilization limit. For
example, if the trunk utilization limit is set at 80 percent and a candidate connection for grooming tries
to use a target trunk operating at 85 percent usage, the candidate connection cannot be rerouted using
that target trunk.
Note The trunk utilization limit applies only to connections being groomed. It does not apply to connections
that are rerouted due to failures.
The default trunk utilization limit is 100 percent, and this imposes no restriction on grooming.
To change the trunk utilization limit, enter the cnfndrteopt command as follows:
M8850_LA.7.PXM.a > cnfndrteopt [-trkutil value]
The trunk utilization value range is 5 to 100 percent. Table 8-15 describes the cnfndrteopt command
parameters.
Note The cnfndrteopt command configures other features that are described elsewhere in this chapter.
The following example changes the trunk utilization limit to 85 percent and displays the change with the
dspndrteopt command.
PXM1E_SJ.7.PXM.a > cnfndrteopt -trkutil 85
PXM1E_SJ.7.PXM.a > dspndrteopt
-trkutil Use the -trkutil option to set a maximum trunk utilization limit for grooming. Enter a
number in the range of 5 to 100 percent. The default setting is 100 percent.
-softrerout
e
Use the -softreroute option to enable or disable soft rerouting during grooming. To enable
soft rerouting, enter enable. To disable soft rerouting, enter disable. The default
configuration disables soft rerouting.
Table 8-15 Parameters for cnfndrteopt Command (continued)