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Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 8 Managing PNNI Nodes and PNNI Routing
Managing PNNI Routes
Managing PNNI Routes
The following sections describe how to control route and link selection for the links on each PNNI node.
Configuring the On-Demand Route Selection Method (First Fit or Best Fit)
When the PNNI controller searches for routes, it can choose the first route that meets the call
requirements, or it can choose the route that provides the best performance. The first fit method chooses
the first available route and reduces call processing time. The best fit method chooses the optimum route,
but it takes longer to select the route. The default setting is first fit.
Note The route selection process is described in the Cisco PNNI Network Planning Guide for MGX and SES
Products.
Table 8-4 Parameters for cnfpnni-timer Command
Parameter Description
nodeindex Logical node’s node index.
-ptseholddown This is the holddown time between two consecutive originations of
PTSEs on the node.
Range: (0.1 through 10) second
Default = 1
-helloholddown Value for the Hello hold down timer that limits the rate at which it sends
Hellos.
-hellointerval Initial value for the Hello timer.
-helloinactivityfactor Inactivity time factor on a horizontal link between two logical nodes.
-ptserefreshinterval Time allowed for the PTSE to re-originate.
-ptselifetimefactor Value for the lifetime multiplier, expressed as a percentage. The product
of this value and the ptserefreshinterval is sets the remaining lifetime of
a self-originated PTSE.
-retransmitinterval Period between retransmissions of unacknowledged DS, PTSE request,
and PTSP.
-ptsedelayedackinterval Minimum time allowed between transmissions of delayed PTSE
acknowledgment packets.
-avcrpm Proportional multiplier used in the algorithms that determines significant
change for AvCR parameters.
-avcrmt Minimum threshold used in the algorithms that determine significant
change for AvCR parameters.
-cdvpm Proportional multiplier used in the algorithms that determine significant
change for CDV parameters.
-ctdpm Proportional multiplier used in the algorithms that determine significant
change for CTD parameters.
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