ATM Configuration and Troubleshooting Guide

Configuring SVCs and PVCs
Planning Your VC Configuration
Chapter 564
• Peak Rate
VBR Variable Bit Rate. VBR corresponds to “Guaranteed” traffic. It is
defined by the following three parameters:
• Peak Rate
• Burst Tolerance
• Sustainable Rate
Traffic Configuration Limitations
The traffic parameter limitations are listed below to guide you when
planning your ATM configuration. If you encounter any of these
limitations when configuring, a message is displayed. The names given
to the different types of card are used in the online help. They correspond
to the following product numbers (discontinued adapters are not shown):
• ATM-HSC & ATM-PCI 155 Mbit/s [+] adapters. The sum of all
the Minimum Rates configured for ABR traffic plus the sum of all
Peak Rates configured for CBR traffic must not exceed 155 Mbits/s.
You can define a maximum of 32 different peak rates for CBR VCs.
• ATM-HSC & ATM-PCI 622 Mbit/s adapters. The sum of all the
Minimum Rates configured for ABR traffic plus the sum of all the
Peak Rates configured for CBR traffic must not exceed 622 Mbits/s.
You can define a maximum of 32 different peak rates for CBR VCs.
Table 5-1
Type of ATM Adapter Adapter Product Numbers
ATM-HSC 155 Mbit/s [+] adapters J2469A & J2499A
ATM-HSC 155 Mbit/s [+] adapter J3420B
ATM-HSC 622 Mbit/s adapter J3573A
ATM-PCI 155 Mbit/s [+] adapters A5513A & A5515A
ATM-PCI 622 Mbit/s adapter A5483A