Juniper JUNOSE 11.2, Configuration Manual

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In this example, the atm bulk-config command configures a VC range made up of two
VC subranges. The first subrange, with VPIs 0–3 and VCIs 101–1100, configures 1000 VCs
on each of four VPIs, for a total of 4000 VCs. The second subrange, with VPIs 4–7 and
VCIs 201–700, configures 500 VCs on each of four VPIs, for a total of 2000 VCs. The
entire myBulkConfig VC range configures a combined total of 6000 VCs.
NOTE: For information about the maximum number of ATM 1483 bulk configurations
supported per router, see JunosE Release Notes, Appendix A, System Maximums.
After you issue the atm bulk-config command, the router provisions all circuits in the
specified VC range at the same time. This provisioning can take several seconds,
depending on the number of VCs being created. The router does not dynamically create
the ATM 1483 subinterface for the circuit until it receives incoming data traffic on the
circuit.
After you create a named VC range, you cannot remove the underlying ATM AAL5 interface
until you issue the
no atm bulk-config command to remove the VC range from that
interface.
NOTE: For information about the maximum number of VCs (sum of the VPI/VCI
addresses within all VC subranges) that you can configure with the atm bulk-config
command per line module and per chassis, see JunosE Release Notes, Appendix A,
System Maximums.
Do not use any reserved VCI values when configuring VCs with the atm bulk-config
command. For information about reserved VCIs, see “Configuring F4 OAM” on page 31
in “Configuring ATM” on page 3.
Bulk Configuration and VC Classes
You can assign a previously configured VC class to a bulk-configured VC range. A VC class
is a set of attributes for virtual circuits that can include the service category, encapsulation
method, F5 OAM options, and Inverse ARP. Using VC classes to configure VC attributes
provides the following benefits:
• VC classes enable you to classify and group VCs based on the OAM and traffic
requirements of their associated subscribers.
•
When subscriber requirements change, a VC class is easier and less time-consuming
to modify than individual PVC attributes.
To assign a VC class to a bulk-configured VC range, you use the atm class-vc command
from Profile Configuration mode to associate the VC class to a base profile. Issuing this
command applies the set of attributes in the specified VC class to all bulk-configured
VC ranges that are dynamically created from this base profile.
For details about configuring and using VC classes, including information about how
precedence levels affect how the router determines attributes values for dynamically
created circuits, see “Configuring ATM VC Classes” on page 52 in “Configuring ATM” on
Copyright © 2010, Juniper Networks, Inc. 628
JunosE 11.2.x Link Layer Configuration Guide