Configuring Vc Classes - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

JunosE 11.3.x Link Layer Configuration Guide

Configuring VC Classes

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When you upgrade to the current JunosE Software release from a JunosE release
numbered lower than Release 7.3.x, the output of the show configuration command
uses the pvc command format (pvc vcd vpi/vci) to display configuration information
for all ATM PVCs. This occurs even if those PVCs were created in a JunosE release
numbered lower than Release 7.3.x with the atm pvc command. For example, assume
that you created a PVC in JunosE Release 7.2.x by issuing the command atm pvc 2
0 33 aal5snap 0 0 0. The show configuration command in the current JunosE
Software release displays the identifier for this PVC as follows:
pvc 2 0/33
When you upgrade to the current JunosE Software release from JunosE Release 7.3.x
or a higher-numbered release, the output of the show configuration command uses
the atm pvc command format to display configuration information for ATM PVCs
created with the atm pvc command. For example, assume that you created a PVC
in JunosE Release 7.3.x or Release 8.0.x by issuing the command atm pvc 2 0 33
aal5snap 0 0 0. The show configuration command in the current JunosE Software
release displays the identifier for this PVC as follows:
atm pvc 2 0 33 aal5snap 0 0 0
For PVCs previously created in the lower-numbered release by using the pvc
command, the show configuration command displays configuration information
using the pvc command format, as described previously.
For information about how to use the show configuration command, see chapter
Managing the System in JunosE System Basics Configuration Guide.
To make the most efficient use of the VC class feature when you upgrade to the current
JunosE Software release, we recommend that you follow these steps:
Delete any PVCs created with the atm pvc command and recreate them by using the
1.
pvc command. For information about creating a data PVC by using the pvc command,
see "Creating Data PVCs" on page 45.
Configure the VC class as described in "Configuring VC Classes" on page 56.
2.
Assign the VC class in one of the following ways:
3.
Assign the VC class to the individual PVC when you create or modify the PVC.
Assign the VC class to the associated ATM major interface or ATM 1483 subinterface
before you create the PVC.
To configure a VC class, you issue the vc-class atm command to create and name the
VC class. The vc-class atm command accesses ATM VC Class Configuration mode, from
which you configure a set of attributes to apply to an ATM data PVC.
Table 8 on page 57 lists the commands that you can use in ATM VC Class Configuration
mode to configure a set of attributes for a data PVC. These commands are identical to
the commands in ATM VC Configuration mode described in "Configuring Individual ATM
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