Overriding Base Profile Assignments; Changing Vc Subranges; Static Atm Interfaces Within Vc Subranges - Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual

JUNOSe 11.0.x Link Layer Configuration Guide

Overriding Base Profile Assignments

You can use the profile atm1483 bulk-config-name pvc command to assign an
overriding profile to a single ATM PVC that exists within a bulk-configured VC
subrange. The VC subrange that encompasses the PVC must have been previously
configured with the atm bulk-config command for use by a dynamic ATM 1483
subinterface. After you assign the overriding profile, the router uses the information
in this profile instead of the information in the previously assigned base profile to
create any subsequent ATM 1483 dynamic subinterface columns on the specified
PVC.
Overriding the base profile assignment for an ATM PVC with a profile that includes
debugging attributes enables you to troubleshoot problems with ATM 1483 dynamic
subinterface columns created on the specified PVC. The overriding profile, like the
original base profile, can include ATM 1483 attributes, nested profile assignments,
and individual characteristics for dynamic upper-interface encapsulation types.
For configuration instructions and examples, see "Configuring Overriding Profile
Assignments" on page 596.
NOTE: See JUNOSe Release Notes, Appendix A, System Maximums for information
about the maximum number of overriding profile assignments currently supported
per router.

Changing VC Subranges

You can add, remove, modify, merge, disable, and enable VC subranges within an
existing bulk-configured VC range. Previously, changes to VC subranges were possible
only if you removed the VC range and then configured it again with different subrange
values. The ability to make changes to VC subranges without first having to remove
the entire VC range avoids potentially disrupting all subscribers on existing dynamic
ATM 1483 subinterfaces associated with the deleted VC range.
For configuration instructions and examples, see "Changing VC Subranges" on
page 601.

Static ATM Interfaces Within VC Subranges

You can configure a static ATM interface with an ATM PVC whose VPI and VCI
addresses fall within an existing bulk-configured VC subrange. Conversely, you can
also create a bulk-configured VC subrange that includes the VPI and VCI addresses
belonging to an existing ATM PVC on a static ATM interface. Previously, configurations
that caused VPI/VCI address conflicts between a static ATM interface and a
bulk-configured VC subrange were prohibited on the router.
In certain ATM network configurations, you might need to transparently forward
traffic from selected circuits with unrelated addresses to another location in the
network. The ability to create a static ATM interface on a circuit within a
bulk-configured VPI/VCI address range is particularly useful when you use ATM layer 2
584
Configuring ATM 1483 Dynamic Subinterfaces