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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 Connection Grooming
Softrerouting is disabled by default. For soft rerouting to work properly, you must enable soft rerouting
and the nodes that host the master and slave endpoints must run Cisco MGX software Release 5 or later.
The first time a connection is rerouted, the master endpoint queries the slave endpoint to determine if it
supports soft rerouting. The first reroute is a hard reroute, but if the master learned that the slave supports
soft reroute, all future reroutes are soft reroutes. If either the master endpoint or the slave endpoint do
not support soft rerouting, all grooming for that connection used the hard reroute method.
Note Cisco MGX switches use soft rerouting for grooming P2P connections. P2MP connections cannot be
groomed.
Enabling and Disabling Soft Rerouting for Grooming
Soft rerouting is described in the previous section, “How Grooming Reroutes Connections.” To enable
or disable soft rerouting for connection grooming, enter the cnfndrteopt command as follows:
M8850_LA.7.PXM.a > cnfndrteopt [-softreroute enable | disable]
To enable soft rerouting, include the -softreroute enable option. To disable soft rerouting, specify
-softreroute disable.
Note The cnfndrteopt command configures other features that are described later in this chapter. Table 8-15
describes the other cnfndrteopt command parameters.
The following example enables soft rerouting and uses the dspndrteopt command to verify the
configuration change:
PXM1E_SJ.7.PXM.a > cnfndrteopt -softreroute enable
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: 85
Soft Reroute: Enabled
Configuring Scheduled Grooming
Scheduled grooming automatically grooms one or more port connections at specific times. You can
groom a specific connection by specifying the port ID, VPI, and VCI, groom a range of connections, or
groom all connections on the port. To automatically groom the port connections at specified times, enter
the cnfrteopt command as follows:
M8850_LA.7.PXM.a > cnfrteopt <portid> <flag> [-range <starting-vpi/vci..ending-vpi/vci>]
[-interval (range=10..10000) (default=60)] [-tod <time-of-day>] [-weekday <day-of-week>]
Table 8-10 describes the cnfrteopt command parameters.
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