Traffic Shaping Rates; Figure 21-4 Traffic Shaping Example; Table 21-7 Traffic Shaping Rates - Cisco BPX 8620 Installation And Configuration Manual

ATM Connection Flow
Figure 21-4 shows an example of traffic shaping. In this example, port 1 is configured to perform traffic
shaping.
Regardless of class of service, the ATM cells pass through the VC queues before leaving the card
Note
when traffic shaping is enabled.
Figure 21-4 shows port 2 is not configured for traffic shaping, and only the ABR traffic with FCES (flow
control external segment) passes through the VC queues.

Figure 21-4 Traffic Shaping Example

Traffic
shaping
enabled
No traffic
shaping

Traffic Shaping Rates

Traffic shaping rates are listed in Table 21-7.

Table 21-7 Traffic Shaping Rates

Service Type
CBR
rt-VBR and nrt-VBR
UBR
ABR
Cisco BPX 8600 Series Installation and Configuration
21-14
CBR Qbin
Port 1 VBR Qbin
ABR/UBR Qbin
ABR/UBR Qbin
Port 2 VBR Qbin
CBR Qbin
MCR
PCR
SCR * %Util
0
MCR * %Util
VC queues
CBR
VBR
UBR
ABR
ABR
ABR (with FCES)
UBR
VBR
CBR
PCR
PCR
PCR
PCR
PCR
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 21 Configuring ATM Connections