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Managing Priority Bumping
The following sections describe the tasks for managing the priority bumping feature:
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Enabling, Configuring, and Disabling Priority Bumping
When you enable priority bumping, you should enable it on all nodes in the network. If some nodes are
running software released prior to Release 5, those nodes will respond as if priority bumping is disabled.
When priority bumping is disabled on some nodes and not others, the enabled nodes will bump
connections for higher priority connections, and those higher priority connections might be rejected at
overloaded nodes that do not support priority bumping. This results in needless connection bumping for
the lower priority connections.
When you enable connection bumping, you can specify a maximum number of bumpable connections
and a maximum number of concurrent bumps. The maximum number of bumpable connections specifies
how many lower priority connections can be bumped for a single higher priority connection. The range
is 1 to 10, and the default is 10.
The maximum number of concurrent bumps specifies how many higher-priority connections can actively
bump lower-priority connections at the same time. The range is 1 to 25, and the default is 25.
To enable and configure priority bumping, enter the cnfndconnpribump command as follows:
M8830_CH.2.PXM.a > cnfndconnpribump [-priorityBumping enable|disable] [-bumpable
<connections>] [-concurrent <bumps>]
To enable or disable priority bumping, include the -priorityBumping option with the appropriate
keyword shown above. The -bumpable option specifies how many connections can be bumped for a
single higher priority connection, and the range is 1 to 10 (default = 10). The -concurrent option defines
how many bumping process can be in process at once, and that range is 1 to 25 (default 25).
The following example enables priority bumping and configures the node to allow up to 15 bumping
processes to each bump up to 8 connections:
M8830_CH.2.PXM.a > cnfndconnpribump -priorityBumping enable -bumpable 8 -concurrent 15
To display the priority bumping configuration, enter the dspndconnpribump command as described in
the next section.
Displaying the Priority Bumping Configuration
To display the priority bumping configuration, enter the dspndconnpribump command as shown in the
following example:
M8830_CH.2.PXM.a > dspndconnpribump
Priority Bumping Admin State:Enable
Priority Bumping Oper State: Up
Max no. bumpable connections: 8
Max no. concurrent connections: 15
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
8-30
Enabling, Configuring, and Disabling Priority Bumping
Displaying the Priority Bumping Configuration
Displaying Priority Bumping Statistics
Resetting the Priority Bumping Statistics
Displaying Priority Bumping Resource Usage
Chapter 8
Managing PNNI Nodes and PNNI Routing
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
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