Configuring Pnni Timers - Cisco MGX 8850 (PXM1E/PXM45) Configuration Manual

Chapter 8 Managing PNNI Nodes and PNNI Routing
Table 8-3
Parameter
-bnPathHolddown
-loadBalance
-onDemand
-awBgTable
-ctdBgTable
-cdvBgTable

Configuring PNNI Timers

Configure the PNNI timers with the cnfpnni-timer command.
mgx8830a.1.PXM.a >
You can define the initial PNNI timer values and significant change thresholds of a PNNI logical node.
Table 8-4
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Parameters for cnfpnni-routing-policy Command (continued)
Description
The border node holddown timer defines the node's minimum time interval
between two consecutive calculations of the border node path tables. If a
network is stable, it may not be necessary to generate border node route tables
10 times per second. In such a case, you can increase the value to reclaim CPU
time needlessly used to update unchanging routing tables. In such a case, you
can increase the holddown timer value to reclaim CPU time needlessly spent
on updating unchanging routing tables.
Units: 100 millisecond increments
Range: 2-600 (0.2-60 seconds)
Default: 2
This parameter defines how routing connections are distributed across the
routes stored in the SPTs. For more information, see
Balance Selection
This parameter defines how the on-demand routing feature selects routes. For
more information, see
(First Fit or Best
The parameter options are:
firstfit = select the first route found
bestfit = select the best route
Default = firstfit
This parameter enables or disables generation of the AW SPTs for all classes
of service. Enter -awBgTable on to enable AW SPT generation, or enter
-awBgTable off to disable it.
Default = on
This parameter enables or disables generation of the CTD SPTs for the CBR,
rt-VBR, and nrt-VBR classes of service. Enter -ctdBgTable on to enable CTD
SPT generation, or enter -ctdBgTable off to disable it.
Default = on
This parameter enables or disables generation of the CDV SPTs for the CBR
and rt-VBR classes of service. Enter -cdvBgTable on to enable CDV SPT
generation, or enter -cdvBgTable off to disable it.
Default = on
cnfpnni-timer
lists the parameter descriptions for the cnfpnni-timer command.
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Method," which appears later in this chapter.
"Configuring the On-Demand Route Selection Method
Fit)," which appears later in this chapter.
<node-index> <options>
Managing PNNI Nodes
"Configuring the Load
8-9