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Chapter 1
Cisco 7200 Series Port Adapter Installation Requirements
NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100 Bandwidth Calculation and
Configuration Instructions
Step 1
For the I/O controller and each port adapter in your system, check the footnotes in
any apply to your system.
Step 2
If you have any dual-width port adapters in your system, carefully read the port adapter configuration
document to see what special conditions apply to these port adapters.
Step 3
Calculate the bandwidth resource requirements. For the I/O controller and each port adapter in your
system, go to
Calculation Table, page
a.
b.
Step 4
Calculate the bandwidth points requirements. For the I/O controller and each port adapter in your
system, go to
of bandwidth points is less than or equal to 800.
Assign each port adapter in your system to a chassis slot. Make sure that the bandwidth points are evenly
Step 5
distributed between the left (odd-numbered slots) and right (even-numbered slots) buses. Include the I/O
controller in your determination of balance. Fill the slots in the following order: 2, 1, 4, 3, 6, 5.
Check your Cisco IOS release and port adapter SDRAM memory requirements as detailed in
Step 6
"Memory Requirements."
You are finished calculating your port adapter configuration.
Note
Dual-width port adapters occupy two horizontally aligned port adapter slots when installed in a
Cisco 7200 series router; however, dual-width port adapters do not use both PCI bus mb1 (left bus) and
PCI bus mb2 (right bus) when operating in the router.
The dual-width PA-A2 port adapter uses only PCI bus mb2 (right bus) when installed in a Cisco 7200
series router.
The dual-width PA-12E/2FE port adapter autoselects PCI bus mb1 (left bus) or PCI bus mb2 (right bus)
based on bandwidth availability—the port adapter selects the PCI bus that has the most available
bandwidth. Therefore, do not include the bandwidth points for the PA-12E/2FE when calculating the
combined bandwidth point total for a combination of installed port adapters in PCI bus mb1 (left bus)
and PCI bus mb2 (right bus). Instead, add the bandwidth points for the PA-12E/2FE to the PCI bus that
has the most PCI bus bandwidth availability (the PCI bus the PA-12E/2FE will autoselect) after
completing the initial calculation.
OL-3875-11
Table 1-6
and write down the bandwidth resource requirements. Use the blank
1-22, to record your requirements.
High-bandwidth port adapter determination:
–
For the NPE-225, NPE-200, NPE-175, and NPE-150, make sure you have no more than three
high-bandwidth port adapters.
For an NPE-100, make sure you have no more than two high-bandwidth port adapters.
–
High- and medium-bandwidth port adapter determination:
–
For the NPE-225, NPE-200, NPE-175, and NPE-150, make sure you have no more than five
high- and medium-bandwidth port adapters.
–
For an NPE-100, make sure you have no more than four high- and medium-bandwidth port
adapters.
Table 1-6
and write down the bandwidth points requirements. Make sure the total number
Installation Requirements Based on the NPE or NSE Installed
Cisco 7200 Series Port Adapter Hardware Configuration Guidelines
Table 1-6
to see if
Bandwidth
Chapter 2,
1-11