Specifications

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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 Priority Bumping
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
The configuration values shown are the same as those for the cnfndconnpribump command described
earlier. The Priority Bumping Oper State line shows whether or not priority bumping is operational.
When priority bumping is enabled, there is a delay during which the feature is brought up. If you enable
priority bumping and the operational state is down, wait a few minutes and check the state again. The
bringup time is proportional to the number of active connections on the switch.
Displaying Priority Bumping Statistics
To display the priority bumping statistics, enter the dsppribumpstats command as shown in the
following example:
M8830_CH.2.PXM.a > dsppribumpstats
Nodal Priority Bumping Stats
=======================================
Priority Bumping Conns Bumped Conns
0 0 0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0