Traffic Management Overview; Table 21-1 Standard Atm Traffic Classes; Figure 21-1 Atm Connections Over A Bpx Switch Network - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

Chapter 21 Configuring ATM Connections

Figure 21-1 ATM Connections over a BPX Switch Network

CPE
T1/E1
Frame Relay
T3/E3
CES
ATM
ATM (T3/E3)
MGX
8220
Frame Relay
IGX
Data Voice
switch
T3/E3/OC3
Multimedia
ATM (T3/E3/OC3)
MGX
8220
T1/E1
Frame Relay
CES
ATM
CPE

Traffic Management Overview

The ATM Forum Traffic Management 4.0 Specification defines five basic traffic classes:
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•
•
•
•
Table 21-1 summarizes the major attributes of each of the traffic management classes:

Table 21-1 Standard ATM Traffic Classes

Attribute
Traffic Parameters
PCR & CDVT
SCR & MBS
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Frame
Relay
CPE CPE
IGX
ATM
shelf
(T3/E3/OC3/OC12)
BXM
BPX switch
BNI BXM
BNI
ATM (T3/E3/OC3/OC12)
ATM (T3/E3)
BNI BPX switch BNI
ASI
ATM
ATM
(T3/E3)
(T3/E3)
CPE
CBR (Constant Bit Rate)
rt-VBR (Real-Time Variable Bit Rate)
nrt-VBR (Non-Real Time Variable Bit Rate)
UBR (Unspecified Bit Rate)
ABR (Available Bit Rate)
CBR
x
Frame Relay
CES
ATM
MGX
8220
ATM (T3/E3/OC3)
ATM
(T3/E3/
OC3/OC12)
BPX switch
BXM
BNI
BNI
BNI
ATM (T3/E3)
BPX switch
BXM
ATM
(T3/E3/OC3/OC12)
rt-VBR nrt-VBR
x x
x x
Cisco BPX 8600 Series Installation and Configuration
Traffic Management Overview
BPX MPLS
network
BXM
POP
ATM
(T3/E3/
OC3/OC12)
ATM
network
ATM
(T3/E3/OC3)
BXM
ATM
(T3/E3/
OC3/OC12)
CPE
UBR ABR
x x
21-3