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Cisco 7200 Series Port Adapter Hardware Configuration Guidelines
OL-3875-11
Chapter 1 Cisco 7200 Series Port Adapter Installation Requirements
Bandwidth and Bandwidth Point Requirements
Bandwidth and Bandwidth Point Requirements
Port adapters use various types of resources from the chassis and the NPE or NSE. Bandwidth is a term
that describes port adapter resource requirements. Bandwidth includes variables such as speed, memory,
CPU requirements, and PCI bus bandwidth. Because of changes in architecture in the network
processing engines over the years, two methods were developed to describe port adapter bandwidth
requirements. The methods are reflected in the Bandwidth Resource Requirement column and the
Bandwidth Points column of Table 1-6. However, the information in these columns must be considered
with the information in the following sections:
• NPE-G1 or NPE-G2 Bandwidth Calculation and Configuration Instructions, page 1-8
• NPE-G1 or NPE-G2 with a Port Adapter Jacket Card—Bandwidth Calculation and Configuration
Instructions, page 1-9
• NPE-400, NPE-300, and NSE-1 Bandwidth Calculation and Configuration Instructions, page 1-9
• NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100 Bandwidth Calculation and Configuration
Instructions, page 1-11
Table 1-6 lists port adapter types, bandwidth resource requirements and bandwidth points, and processor
memory requirements.
Requirements Summary
This section provides a summary of bandwidth and bandwidth point requirements for each processing
engine.
Port Adapter Jacket Card
PCI bus mb0 has a 600 point maximum. The Port Adapter Jacket Card accepts one port adapter which
can use a maximum of 600 bandwidth points. PCI bus mb0 with a Port Adapter Jacket Card installed is
designated as port adapter slot 5 in a Cisco 7204VXR router, or slot 7 in a Cisco 7206VXR router.
NPE-G1 or NPE-G2
• Left side, bus 1 (slots 1, 3, and 5) and I/O controller (slot 0) has a 600 point maximum.
• Right side, bus 2 (slots 2, 4, and 6) has a 600 point maximum.
• Distribute port adapter bandwidth points evenly across both left and right system slots (buses).
• Do not calculate bandwidth points for an I/O controller if an I/O controller is installed with the
NPE-G1 or NPE-G2.
• The NPE-G1 or NPE-G2 Gigabit Ethernet interfaces do not use bandwidth points.
NPE-400, NPE-300, NSE-1
• Left side, bus 1 (slots 1, 3, and 5) and I/O controller (slot 0) has a 600 point maximum.
• Right side, bus 2 (slots 2, 4, and 6) has a 600 point maximum.
• Distribute port adapter bandwidth points evenly across both left and right system slots (buses).
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