Assigning Vc Classes To Atm Major Interfaces - Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual

Assigning VC Classes to ATM Major Interfaces

To assign a previously configured VC class to an ATM major interface, you use the
class-int command from Interface Configuration mode. Issuing this command applies
the set of attributes in the specified VC class to the ATM data PVCs statically or
dynamically created on this interface.
For example, the following commands assign the VC class named dsl-subscriber-class
to an ATM major interface configured on slot 5, port 0.
For those attributes that you do not explicitly specify for an ATM PVC, the router
applies the values specified in the VC class. As explained in "Precedence Levels" on
page 56, the values in a VC class assigned to an ATM major interface have a lower
precedence than both of the following:
This means that if a VC class is assigned to an individual PVC or ATM 1483
subinterface configured on the major interface, the attribute values configured in the
VC class assigned to the PVC or subinterface override the attribute values configured
in the VC class assigned to the major interface.
For examples that illustrate how precedence levels affect the assignment of VC
classes, see "Precedence Level Examples for Assigning VC Classes" on page 67.
class-int
You must issue the exit command from ATM VC Configuration mode for the VC
class association to take effect.
Example
host1(config-subif-atm-vc)#class-vc dsl-subscriber-class
host1(config-subif-atm-vc)#exit
Use the no version to remove the VC class association with the data PVC.
See class-vc.
! Assign VC class dsl-subscriber-class to ATM interface 5/0.
host1(config)#interface atm 5/0
host1(config-if)#class-int dsl-subscriber-class
host1(config-if)#exit
Values in a VC class assigned to an individual ATM PVC
Values in a VC class assigned to an ATM 1483 subinterface
Use from Interface Configuration mode to assign a previously configured VC
class to an ATM major interface.
You must issue the exit command from Interface Configuration mode for the
VC class association to take effect.
Example
host1(config-if)#class-int gold-subscriber-class
host1(config-if)#exit
Chapter 1: Configuring ATM
Configuring ATM VC Classes
65