Bulk Configuration And Vc Classes - Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual

JUNOSe 11.0.x Link Layer Configuration Guide
bulk-config command. For example, the following commands create an ATM 1483
bulk configuration named myBulkConfig on the specified ATM AAL5 interface.
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 33 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:
582
Configuring ATM 1483 Dynamic Subinterfaces
host1(config)#interface atm 2/0
host1(config-if)#atm bulk-config myBulkConfig vc-range 0 3 101 1100
vc-range 4 7 201 700
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.