Default Dbs Enable Command - Cisco 10000 Series Configuration Manual
Quality of service configuration guide
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Applying Traffic Shaping Parameters Using RADIUS Profiles
When you enter the dbs enable or no dbs enable commands, existing sessions are not disconnected. If
you have a session that has been configured for DBS and you configure the no dbs enable command on
a VC, additional sessions that are configured display DBS-configured QoS values until the first new
session is up. After the first session is brought up, the VC has default and locally configured values. If
you configure the dbs enable command after multiple sessions are already up on the VC, all sessions on
that VC have DBS QoS parameters.
RADIUS QoS attributes are applied to PVCs when a new PPPoE session has PCR and SCR values that
are higher than existing PPPoE sessions. If a new PPPoE session with lower PCR and SCR values is
added to a PVC, the RADIUS QoS attributes are not applied to the new session. If the user with the
PPPoE session with the higher PCR and SCR values logs out, the QoS attributes are set to those of the
lower bandwidth user.
RADIUS QoS attributes override attributes on a PVC configured in ATM PVC-in-range or ATM PVC
range configuration mode. If the RADIUS QoS attributes cannot be applied to a PVC, PPPoE and PPPoA
sessions cannot be established.
When DBS is configured, normal ATM precedences apply. PVC configurations take precedence over VC
class configurations. Thus, if DBS QoS parameters are applied on a VC class and disabled on one PVC
in that VC class, DBS QoS parameters are not applied on the PVC. ATM PVC-in-range configurations
take precedence over PVC range configurations.
When you configure DBS on a PVC, existing sessions on that PVC remain connected.
default dbs enable Command
To remove the dbs enable or no dbs enable command from an existing configuration, use the default
dbs enable command in the appropriate configuration mode.
default dbs enable
no default dbs enable
default dbs enable Command History
Cisco IOS Release
Release 12.2(16)BX
Release 12.2(28)SB
Configuration Modes
You can configure the default dbs enable command in the following configuration modes:
•
•
•
•
Cisco 10000 Series Router Quality of Service Configuration Guide
17-4
Description
The default dbs enable command was introduced on the PRE2.
This command was integrated in Cisco IOS Release 12.2(28)SB for the
PRE2.
ATM VC class
ATM VC
ATM PVC range
ATM PVC-in-range
Chapter 17
Configuring Dynamic Subscriber Services
OL-7433-09
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