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Chapter 2
Cisco CMTS Configuration Commands
cable load-balance group policy ugs
To configure whether the Cisco CMTS should load balance cable modems with Unsolicited Grant
Service (UGS) service flows (which are typically used for active voice calls), use the cable load-balance
group policy ugs command in global configuration mode. To reset the load-balance group to its default
policy setting, use the no form of this command.
Syntax Description
n
Defaults
Cable modems with active UGS service flows can be moved for load-balancing (cable load-balance
group n policy ugs)
Command Modes
Global configuration
Command History
Release
12.2(15)BC1
Usage Guidelines
The cable load-balance group policy ugs command determines whether a load-balance group can move
cable modems with UGS service flows, so as to enforce dynamic load balancing policies. Because most
voice calls use UGS service flows to allow real-time traffic, this option is primarily used to determine
whether the Cisco CMTS will move cable modems with active voice calls.
If you disable this option (no cable load-balance group policy ugs), the Cisco CMTS does not move
cable modems with active UGS service flows to a new upstream or downstream. This prevents some
possible interruptions of service to these customers, but it could result in denial of service conditions for
other customers if the interface starts becoming overloaded.
To avoid this, the default configuration (cable load-balance group policy ugs) of this command allows
the Cisco CMTS to move cable modems to a new upstream or downstream, even if they have active UGS
service flows. This enables the Cisco CMTS to perform optimum load balancing, but it could cause a
momentary interruption in the voice call—users on the voice call might hear a momentary drop during
the call, but the call should not be terminated.
Note
The cable load-balance group policy ugs command affects only dynamic load-balancing operations
and does not affect static and passive load-balancing operations. Dynamic load balancing is enabled
using the enforce option with the
OL-1581-08
cable load-balance group n policy ugs
no cable load-balance group n policy ugs
Specifies the number of the load-balance group. The valid range is 1 to 20.
Modification
This command was introduced for the Cisco uBR7246VXR and
Cisco uBR10012 routers.
cable load-balance group threshold
Cisco Broadband Cable Command Reference Guide
cable load-balance group policy ugs
command.
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