Protect Command - Cisco 10000 Series Configuration Manual

ATM PVC Selection
Configuration Modes
VC-class configuration (for a VC class)
Bundle-vc configuration (for ATM VC bundle members)
Usage Guidelines for the precedence Command
Assignment of precedence levels to VC or PVC bundle members allows you to create differentiated
service because you can distribute the IP precedence levels over the various VC/PVC bundle members.
You can map a single precedence level or a range of levels to each discrete VC/PVC in the bundle,
thereby enabling VCs/PVCs in the bundle to carry packets marked with different precedence levels.
Alternatively, you can use the precedence other command to indicate that a VC/PVC can carry traffic
marked with precedence levels not specifically configured for other VCs/PVCs. Only one VC/PVC in
the bundle can be configured using the precedence other command. This VC/PVC is the default
VC/PVC.
To use this command in vc-class configuration mode, first enter the vc-class atm command in global
configuration mode. The precedence command has no effect if the VC class that contains the command
is attached to a standalone VC; that is, if the VC is not a bundle member.
To use the precedence command to configure an individual bundle member in bundle-VC configuration
mode, first enter the bundle command to enter bundle configuration mode. Next, use the pvc-bundle
command to add a PVC to the bundle as a member of the bundle and enter bundle-VC configuration
mode.
VCs in a VC bundle are subject to the following configuration inheritance guidelines (listed in order of
next-highest precedence):
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protect Command

To configure a virtual circuit (VC) class with protected group or protected VC status for application to
a VC bundle member, use the protect command in vc-class configuration mode. To remove the protected
status from the VC class, use the no form of the command.
To configure a specific VC or permanent virtual circuit (PVC) as part of a protected group of the bundle
or to configure it as an individually protected VC or PVC bundle member, use the protect command in
bundle-vc configuration mode. To remove the protected status from the VC or PVC, use the no form of
the command.
protect {group | vc}
no protect {group | vc}
Syntax Description
group
vc
Cisco 10000 Series Router Quality of Service Configuration Guide
19-12
VC configuration in bundle-vc mode
Bundle configuration in bundle mode (with effect of assigned vc-class configuration)
Subinterface configuration in subinterface mode
Configures the VC or PVC bundle member as part of the protected group of
the bundle.
Configures the VC or PVC member as individually protected.
Chapter 19 Configuring Quality of Service for PVC Bundles
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