Defining Virtual Path Tunnels; Configuring A Point-To-Point Atm1 Or Atm2 Iq Connection - Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual

JUNOS 10.1 Network Interfaces Configuration Guide

Defining Virtual Path Tunnels

For ATM2 IQ interfaces, you can configure shaping on a VPI. When you do this, the
VPI is called a VP tunnel. If your router is equipped with an ATM2 IQ PIC, you can
configure VP tunnels and a weight for each VC. Each VC is serviced in WRR mode.
When VCs have data to send, they send the number of cells equal to their weight
before passing control to the next active VC. This allows proportional bandwidth
sharing between multiple VCs within a rate-shaped VP tunnel. VP tunnels are not
supported on point-to-multipoint interfaces.
If you change or delete VP tunnel traffic shaping, all logical interfaces on a VP are
deleted and re-added.
All VPIs you configure on logical interfaces must also be configured on the physical
interface, at the
When you configure a VPI without shaping parameters, the VPI is a regular VPI; no
shaping is attached. VCIs that belong to non-shaped VPIs can have VCI shaping.
For point-to-point interfaces, include the
interface-name atm-options vpi vpi-identifier]
For
Traffic-Shaping Profile" on page 326. For information about ATM2 IQ shaping values,
see "Specifying ATM2 IQ Shaping Values" on page 332.

Configuring a Point-to-Point ATM1 or ATM2 IQ Connection

When you use ATM encapsulation on an interface, you must map each logical interface
to a VCI. You can optionally map logical interfaces to a VPI.
For ATM1 and ATM2 IQ interfaces, you can configure a VCI and a VPI on a
point-to-point ATM interface by including the
You can include this statement at the following hierarchy levels:
For each VCI, configure the VCI and VPI identifiers. The default VPI identifier is 0.
For ATM1 interfaces, the VCI identifier cannot exceed the highest-numbered VC
324
Defining Virtual Path Tunnels
[edit interfaces interface-name atm-options]
[edit interfaces interface-name atm-options vpi vpi-identifier]
shaping {
(cbr rate | rtvbr peak rate sustained rate burst length | vbr peak rate sustained rate
burst length);
queue-length number;
}
, , and statement usage guidelines, see "Defining the ATM
cbr vbr burst
vci vpi-identifier.vci-identifier;
[edit interfaces interface-name unit logical-unit-number]
[edit logical-systems logical-system-name interfaces interface-name unit
logical-unit-number]
hierarchy level.
shaping statement at the
hierarchy level:
vci statement:
[edit interfaces