Before You Configure Atm; Configuration Tasks - 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

Before You Configure ATM

Configuration Tasks

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An ATM interface has a rate limit control that is non-configurable and always in effect;
the rate limit is the same for all ATM interfaces. In addition, each ATM VC maintains its
own state and statistics counters for tracking the rate. The rate limit for ATM OAM cells
is approximately 5 packets per second.
For an ATM VC, the router increments the InOamCellDiscards statistics counter in the
show atm vc atm command display to track the number of OAM cells received on this
circuit that were discarded. The InOamCellDiscards counter operates on a per-circuit
basis, not on a per-interface basis.
For examples of the show atm vc atm command display, see "show atm vc atm" on
page 91.
Before you configure an ATM interface, verify that you have installed the physical module
(such as an OC3 module) correctly. For more information about preconfiguration
procedures, see the ERX Hardware Guide or the E120 and E320 Hardware Guide.
Also have the following information available:
Interface specifiers for the ATM interfaces that you want to create
For more information about specifying ATM interfaces and subinterfaces on E Series
routers, see Interface Types and Specifiers in JunosE Command Reference Guide.
Virtual path and channel numbers for each virtual circuit you want to create
IP addresses and subnet mask assignments for IP interfaces
You can configure the following types of dynamic interfaces over ATM:
IP over static ATM 1483 (IPoA)
IP over PPP over static ATM 1483
IP over PPPoE over static ATM 1483
IP over bridged Ethernet over static ATM 1483
IP over MLPPP over static ATM 1483
ATM 1483 over static ATM AAL5 over ATM
For information about creating these dynamic configurations, see "Configuring Dynamic
Interfaces" on page 511.
The following sections describe how to perform these ATM configuration tasks:
Creating a Basic Configuration on page 21
Setting Optional Parameters on page 23
Configuring OAM on page 31
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