Cisco 7200 Series Port Adapter Hardware Configuration Guidelines

Cisco 7200 Series Port Adapter Installation Requirements

Cisco 7200 series routers (the 2-slot Cisco 7202, the 4-slot Cisco 7204 and Cisco 7204VXR, and the 6-slot Cisco 7206 and Cisco 7206VXR) support multiprotocol, multimedia routing and bridging with a wide variety of protocols and media types. Network interfaces reside on port adapters that provide a connection between the routers' Peripheral Component Interconnect (PCI) buses and external networks. Port adapters can be placed in any available port adapter slot, in any desired combination.

Note For information about the Cisco 7206 and Cisco 7206VXR as router shelves in a Cisco AS5800 Universal Access Server, refer to the Cisco AS5800 Universal Access Server documentation listed in the "Other Documentation" section on page vi.

This chapter contains the following sections:

•Chassis Overview—Front View

•Chassis Overview—Rear View

•Configuration Guidelines and Requirements

–PCI Buses and Port Adapter and I/O Controller Architecture

–Port Adapter Slot Numbering

•Guidelines for Installation

•Installation Requirements Based on the NPE or NSE Installed

–NPE-G1 or NPE-G2 Bandwidth Calculation and Configuration Instructions

–NPE-G1 or NPE-G2 with a Port Adapter Jacket Card—Bandwidth Calculation and Configuration Instructions

–NPE-400, NPE-300, and NSE-1 Bandwidth Calculation and Configuration Instructions

–NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100 Bandwidth Calculation and Configuration Instructions

•Bandwidth and Bandwidth Point Requirements

–Requirements Summary

–Bandwidth Table

•Bandwidth Calculation Table

•Messages for One Port Use of Specific Port Adapters and an I/O Controller

•Error Messages

–NPE-400

–NPE-G1 or NPE-G2

Chassis Overview—Front View

The front of Cisco 7200 series routers provides access to an input/output (I/O) controller and up to two, four, or six network interface port adapters. The I/O controller has a local console port for connecting a data terminal (or data terminal equipment [DTE]) and an auxiliary port for connecting a modem (or other data communications equipment [DCE]) or other devices for configuring and managing the router; PC Card slots for PC Cards or Flash Disks; and optional Ethernet, Fast Ethernet, or Gigabit Ethernet ports.

The NPE-G1 and NPE-G2 work with the I/O controller when installed in a Cisco 7200 VXR router. The NPE-G1 or NPE-G2 can also be used without an I/O controller; both have three Gigabit Ethernet interfaces, with a total of three of six ports (three RJ-45 and three GBIC modules on the NPE-G1, or three SFP modules on the NPE-G2) available at one time, a CompactFlash Disk, and a console port and auxiliary port. In addition, the NPE-G2 has a Fast Ethernet Management port and two USB ports for security tokens and data file storage. The Port Adapter Jacket Card can be used in the I/O controller slot, if an NPE-G1 or NPE-G2 is installed.

Figure 1-1 shows a Cisco 7206VXR with installed port adapters and an I/O controller with a Fast Ethernet port.

Figure 1-1 Cisco 7200 Series Router—Front View (Cisco 7206VXR Shown)

Note A blank port adapter is installed in port adapter slot 5 in Figure 1-1. To ensure adequate airflow across the router's internal components, ensure that each port adapter slot is filled with either a port adapter or a blank port adapter.

The port adapters installed in Cisco 7200 series routers are of the same type as those installed in other Cisco 7000 family routers. Cisco 7200 series routers support the online insertion and removal (OIR) of installed port adapters.

Chassis Overview—Rear View

Figure 1-2 Cisco 7200 Series Router—Rear View

The rear of Cisco 7200 series routers provides access to a network processing engine (NPE) or network services engine (NSE) and up to two 280W AC-input or DC-input power supplies (see Figure 1-2).

Most NPEs and the NSE have no external connectors or LEDs. There is a handle for removing and installing the engines and two captive installation screws for securing them to the chassis.

The NPE-G1 and NPE-G2 have external connectors for Gigabit Ethernet interfaces, and a console port and auxiliary port; the NPE-G2 also has a Fast Ethernet Management port. The NPE-G1 and NPE-G2 also have a cable-management bracket.

A fully configured Cisco 7200 series router operates with only one installed power supply; however, a second, optional power supply of the same type provides hot-swappable, load-sharing, redundant power. The power supply has the router's main power switch and either an AC-input power receptacle, or three hardwired DC-input power leads (depending on the type of installed power supply). Adjacent to the power supply bays are two chassis grounding receptacles that provide a chassis ground connection for ESD equipment or a two-hole grounding lug (see Figure 1-2).

Note The Cisco 7200 series routers do not support a mix of installed AC-input and DC-input power supplies. Figure 1-2 shows the rear of a Cisco 7200 series router configured with a single 280W AC-input power supply. (A power supply filler plate is installed over the second power supply bay.)

Three internal fans draw cooling air into the chassis interior and across internal components to maintain an acceptable operating temperature (see Figure 1-2). The three fans are enclosed in a tray that is located in the subchassis.

The I/O controller, port adapters, Port Adapter Jacket Card, power supplies, and NPE or NSE slide into their respective chassis slots and connect directly to the router midplane; there are no internal cables to connect.

Configuration Guidelines and Requirements

Understanding the relationship between the three Peripheral Component Interconnect (PCI) buses, I/O controller, and port adapters is important in understanding the rationale for the bandwidth point information that is provided in this document.

PCI Buses and Port Adapter and I/O Controller Architecture

All port adapters and service adapters installed in Cisco 7200 series routers connect to one of two Peripheral Component Interconnect (PCI) buses, mb1(left bus) or mb2 (right bus), on the router midplane that provide a path to packet I/O memory and the system (routing and switching) processor.

The optional ports on the I/O controller connect to a third PCI bus, mb0 (left bus), that connects to one of the PCI buses or to both of the PCI buses, depending on which network processing engine (NPE) or network services engine (NSE) is installed and supported in your system.

With an NPE-G1 or NPE-G2 installed, the I/O controller connects on the third PCI bus, mb0, which connects directly into the NPE-G1 or NPE-G2. When installed with the NPE-G1 or NPE-G2, the I/O controller does not take bandwidth from the two PCI buses (left and right) dedicated to the port adapters.

The Port Adapter Jacket Card, for use in the Cisco 7200 VXR routers and only with the NPE-G1 or NPE-G2, installs in the I/O controller slot on PCI bus mb0. Because the Port Adapter Jacket Card accepts only one port adapter, and the PCI bus provides another 600 bandwidth points, this bus cannot be oversubscribed because no port adapter is assigned more than 600 bandwidth points.

Guidelines for distributing the port adapters evenly between the two buses are given in the "Guidelines for Installation" section.

Port Adapter Slot Numbering

Figure 1-3 Cisco 7200 Series Port Adapter Slot Numbering—Cisco 7206 Shown

Figure 1-3 shows the port adapter slot numbering for the Cisco 7200 series routers. Figure 1-4 shows the port adapter slot numbering for the Cisco 7200 VXR routers with the Port Adapter Jacket Card installed.

For the Cisco 7202, Cisco 7204, and Cisco 7206 routers, port adapters in odd-numbered slots connect to PCI bus mb1 (left bus). Port adapters in even-numbered slots connect to PCI bus mb2 (right bus). The I/O controller connects to PCI bus mb0 (left bus), port adapter slot 0. The I/O controller is considered part of the left bus when calculating bandwidth points.

For the Cisco 7204VXR and Cisco 7206VXR routers, port adapters in odd-numbered slots connect to PCI bus mb1 (left bus). Port adapters in even-numbered slots connect to PCI bus mb2 (right bus). The I/O controller connects to PCI bus mb0 (left bus), port adapter slot 0. The I/O controller is considered part of the left bus when calculating bandwidth points, except in the case of the NPE-G1 or NPE-G2. With the NPE-G1 or NPE-G2 installed, the I/O controller connects on the third PCI bus, mb0, which connects directly into the NPE-G1 or NPE-G2, and so does not use bandwidth points.

Note The NPE-G1 and NPE-G2 installs only in the Cisco 7204VXR and Cisco 7206VXR routers.

Figure 1-4 Cisco 7200 VXR Port Adapter Slot Numbering—With Port Adapter Jacket Card

Note The Port Adapter Jacket Card works only with an NPE-G1 or NPE-G2 installed.

The Port Adapter Jacket Card installs into the I/O controller slot on the third PCI bus, mb0. The Port Adapter Jacket Card is designated slot 0, and the port adapter installed in it is designated port adapter slot 7 on the Cisco 7206 VXR router, and slot 5 on the Cisco 7204 VXR router.

Guidelines for Installation

Cisco 7200 series routers have a finite data-carrying capacity, referred to as bandwidth, that affects the port adapter distribution in the chassis, as well as the number and types of port adapters you can install.

To ensure that your Cisco 7200 series router port adapter configuration is within the router operating limits, observe the following guidelines and requirements when planning to install a port adapter, network processing engine or network services engine, or I/O controller. "Memory Requirements," provides information about various types of memory requirements for the hardware and software that support port adapters.

Table 1-1 provides general guidelines for Cisco 7200 series routers.

Installation Requirements Based on the NPE or NSE Installed

To ensure that your Cisco 7200 series port adapter configuration is within the router operating limitations, determine your model of network processing engine or network services engine and observe the following guidelines:

•For NPE-G1 or NPE-G2, go to the "NPE-G1 or NPE-G2 Bandwidth Calculation and Configuration Instructions" section.

•NPE-G1 or NPE-G2 with a Port Adapter Jacket Card—Bandwidth Calculation and Configuration Instructions

•For NPE-400, NPE-300 and NSE-1, go to the "NPE-400, NPE-300, and NSE-1 Bandwidth Calculation and Configuration Instructions" section.

•For NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100, go to the "NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100 Bandwidth Calculation and Configuration Instructions" section.

NPE-G1 or NPE-G2 Bandwidth Calculation and Configuration Instructions

Step 1 For each port adapter in your system, check the footnotes in Table 1-6 to see if any apply to your system.

Step 2 If you have any dual-wide 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 points requirements. For each port adapter in your system, go to Table 1-6 and write down the bandwidth points requirements. Use the blank Bandwidth Calculation Table, to record your requirements.

Note Do not calculate bandwidth points for an I/O controller if it is installed in the Cisco 7200 VXR router with an NPE-G1 or NPE-G2. With the NPE-G1 or NPE-G2, I/O controllers do not use bandwidth or bandwidth points.

Step 4 Assign each port adapter in your system to a chassis slot.

•Make sure that the total bandwidth points for slots 0, 1, 3, and 5 (left bus) are less than or equal to 600.

•Make sure that the total bandwidth points for slots 2, 4, and 6 (right bus) are less than or equal to 600.

Step 5 Make sure that the bandwidth points are evenly distributed between the left (odd-numbered slots) and right (even-numbered slots) buses. Include the I/O controller in your determination of balance for the left odd-numbered slots. Fill the slots in the following order: 2, 1, 4, 3, 6, 5.

Step 6 Check your Cisco IOS release and port adapter SDRAM memory requirements as detailed in "Memory Requirements.".

You are finished calculating your port adapter configuration.

Sample Bandwidth Configuration for the NPE-G1 or NPE-G2

This sample configuration is for a Cisco 7200 VXR chassis with an NPE-G1 or NPE-G2 installed. The maximum points allowed for each PCI bus is 600 points. When any I/O controller is installed with the NPE-G1 or NPE-G2, no bandwidth points are used. The Gigabit Ethernet interfaces on the NPE-G1 or NPE-G2 also require no bandwidth points.

NPE-G1 or NPE-G2 with a Port Adapter Jacket Card—Bandwidth Calculation and Configuration Instructions

The Port Adapter Jacket Card works only with the NPE-G1 or NPE-G2 installed in Cisco 7200 VXR router. Because of the third PCI bus provided by these network processing engines, the Port Adapter Jacket Card PCI bus mb0 provides an additional 600 bandwidth points. Only one port adapter can be inserted into the port adapter slot in the Port Adapter Jacket Card. Because no port adapter is assigned more than 600 bandwidth points, there is no need to do any calculation of points for port adapter slot 5 (Cisco 7204 VXR) or slot 7 (Cisco 7206 VXR), PCI bus mb0.

NPE-400, NPE-300, and NSE-1 Bandwidth Calculation and Configuration Instructions

Step 1 For the I/O controller and each port adapter in your system, check the footnotes in Table 1-6 to see if any apply to your system.

Step 2 If you have any dual-wide 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 points requirements. For the I/O controller and each port adapter in your system, go to Table 1-6 and write down the bandwidth points requirements. Use the blank Bandwidth Calculation Table, to record your requirements.

Step 4 Assign each port adapter in your system to a chassis slot.

•Make sure that the total bandwidth points for slots 0, 1, 3, and 5 (left bus) are less than or equal to 600.

•Make sure that the total bandwidth points for slots 2, 4, and 6 (right bus) are less than or equal to 600.

Step 5 Make sure that the bandwidth points are evenly distributed between the left (odd-numbered slots) and right (even-numbered slots) buses. Include the I/O controller in your determination of balance for the left odd-numbered slots. Fill the slots in the following order: 2, 1, 4, 3, 6, 5.

Step 6 Check your Cisco IOS release and port adapter SDRAM memory requirements as detailed in Chapter 2.

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.

Sample Bandwidth Configuration for the NPE-400, NPE-300, and NSE-1

This sample configuration is for a Cisco 7200 VXR chassis with an NPE-400 installed. The maximum points allowed for each PCI bus is 600 points. The I/O controller is considered a port adapter in bandwidth point calculation.

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 Table 1-6 to see if 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 Table 1-6 and write down the bandwidth resource requirements. Use the blank Bandwidth Calculation Table, to record your requirements.

a. 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.

b. 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.

Step 4 Calculate the bandwidth points requirements. For the I/O controller and each port adapter in your system, go to Table 1-6 and write down the bandwidth points requirements. Make sure the total number of bandwidth points is less than or equal to 800.

Step 5 Assign each port adapter in your system to a chassis slot. Make sure that the bandwidth points are evenly 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.

Step 6 Check your Cisco IOS release and port adapter SDRAM memory requirements as detailed in "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.

Sample Bandwidth Configuration for the NPE-225, NPE-200, NPE-175, and NPE-150

The following sample configurations are for a Cisco 7200 series router with an I/O controller and NPE-225 installed. The maximum points allowed is 800 points per chassis.

The sample configuration in Table 1-4 follows the rule of keeping below the 800 maximum bandwidth points, and having no more than three high-bandwidth port adapters, and having no more than five high- and medium-bandwidth port adapters in a chassis with an NPE-225. All three rules must be followed for a configuration to be valid. The I/O controller is considered a port adapter in point calculation.

The configuration in Table 1-5 is invalid because, although the bandwidth points are less than 800, there are four high-bandwidth port adapters installed, not three high-bandwidth port adapters as the rules allow. All three rules (no more than 800 bandwidth points, no more than three high-bandwidth port adapters, and no more than five high- and medium-bandwidth port adapters in a chassis with an NPE-225) must be followed for the configuration to be valid. The I/O controller is considered a port adapter in point calculation.

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

•NPE-G1 or NPE-G2 with a Port Adapter Jacket Card—Bandwidth Calculation and Configuration Instructions

•NPE-400, NPE-300, and NSE-1 Bandwidth Calculation and Configuration Instructions

•NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100 Bandwidth Calculation and Configuration Instructions

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).

NPE-225, NPE-200, NPE-175, NPE-150

•Port adapters are labeled as high, medium, and low.

•Bandwidth point rules:

–No more than three high-bandwidth port adapters, and

–No more than five total medium- and high-bandwidth port adapters, and

– No more than 800 total bandwidth points per system

•Distribute port adapter bandwidth points evenly across both left and right system slots (buses).

NPE-100

•Port adapters are labeled as high, medium, and low.

•Bandwidth point rules:

–No more than two high-bandwidth port adapters, and

–No more than four total medium- and high-bandwidth port adapters, and

– No more than 800 total bandwidth points per system

•Distribute port adapter bandwidth points evenly across both left and right system slots (buses).

Bandwidth Table

Use the table below to determine the bandwidth points for your port adapter and I/O controller.

Note You can use a Cisco 7200 series router with a port adapter configuration that exceeds the preceding guidelines; for example, if you have a redundant port adapter installed that is not in use. However, to prevent anomalies from occurring while the router is in use, we strongly recommend restricting the port adapter types installed in the router according to the guidelines listed above.

Additionally, your port adapter configuration must be within the above guidelines before the Cisco Technical Support Services will troubleshoot anomalies that are occurring in your Cisco 7200 series router.

For information on system memory requirements and Cisco IOS memory requirements, see "Memory Requirements."

Bandwidth Calculation Table

Use Table 1-7 to calculate the bandwidth points for your router.

Messages for One Port Use of Specific Port Adapters and an I/O Controller

For the PA-2FE-FX, PA-2FE-TX, PA-POS-2OC3, and I/O controller c7200-I/O-2FE/E using only one port—with what would normally be oversubscription of bandwidth points but is allowed because of the strict use of only one port—the following messages appear in these Cisco IOS releases: Cisco IOS Release 12.3(9), Cisco IOS Release 12.1(24)E, Cisco IOS Release 12.2(25)S, and Cisco IOS Release 12.0(29)S.

NPE-400

The following messages appear in a system with an NPE-400 installed. To provide examples of the messaging, the following two sample hardware configurations are referred to in the example output message.

Example 1: Showing an acceptable configuration.

Slots 0, 1, 3 and 5: c7200-I/O-2FE/E, 2PA-FE

Slots 2, 4 and 6: PA-8E, PA-POS-2OC3

==========

PCI bus mb0_mb1 (Slots 0, 1, 3 and 5) has a capacity of 600 bandwidth points. Current 
configuration on bus mb0_mb1 has a total of 600 bandwidth points. This configuration 
is within the PCI bus capacity and is supported. 

PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points. Current 
configuration on bus mb2 has a total of 680 bandwidth points. The set of PA-2FE, 
PA-POS-2OC3, and I/O-2FE qualify for "half bandwidth points" consideration, when full 
bandwidth point counting results in oversubscription, under the condition that only 
one of the two ports is used. With this adjustment, current configuration on bus mb2 
has a total of 380 bandwidth points. This configuration is within the PCI bus capacity 
and is supported under the above condition.

Please refer to the following document "Cisco 7200 Series Port Adapter Hardware 
Configuration Guidelines" on Cisco.com <http://www.cisco.com>

for c7200 bandwidth points oversubscription and usage guidelines.

Example 2: Showing an oversubscribed configuration.

Slots 0, 1, 3 and 5: c7200-I/O-2FE/E, PA-POS-2OC3, PA-2FE

Slots 2, 4 and 6: PA-8E

==========

PCI bus mb0_mb1 (Slots 0, 1, 3 and 5) has a capacity of 600 bandwidth points. Current 
configuration on bus mb0_mb1 has a total of 1200 bandwidth points. The set of PA-2FE, 
PA-POS-2OC3, and I/O-2FE qualify for "half bandwidth points" consideration, when full 
bandwidth point counting results in oversubscription, under the condition that only 
one of the two ports is used. With this adjustment, current configuration on bus 
mb0_mb1 has a total of 700 bandwidth points. This configuration has oversubscripted 
the PCI bus and is not a supported configuration. 

PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points. Current 
configuration on bus mb2 has a total of 80 bandwidth points. This configuration is 
within the PCI bus capacity and is supported. 

Please refer to the following document "Cisco 7200 Series Port Adapter Hardware 
Configuration Guidelines" on Cisco.com <http://www.cisco.com>

for c7200 bandwidth points oversubscription and usage guidelines.

NPE-G1 or NPE-G2

The following messages appear in a system with an NPE-G1 or NPE-G2 installed. To provide examples of the messaging, the following two sample hardware configurations are referred to in the example output message.

Example 1: Showing an acceptable configuration

Slots 1, 3 and 5: PA-POS-2OC3, PA-2FE

Slots 2, 4 and 6: PA-FE, PA-2H

=========

PCI bus mb1 (Slots 1, 3 and 5) has a capacity of 600 bandwidth points. Current 
configuration on bus mb1 has a total of 1000 bandwidth points. The set of PA-2FE, 
PA-POS-2OC3, and I/O-2FE qualify for "half bandwidth points" consideration, when full 
bandwidth point counting results in oversubscription, under the condition that only 
one of the two ports is used. With this adjustment, current configuration on bus mb1 
has a total of 500 bandwidth points. This configuration is within the PCI bus capacity 
and is supported under the above condition. 

PCI bus mb2 (Slots 2, 4 and 6) has a capacity of 600 bandwidth points. Current 
configuration on bus mb2 has a total of 400 bandwidth points. This configuration is 
within the PCI bus capacity and is supported. 

Please refer to the following document "Cisco 7200 Series Port Adapter Hardware 
Configuration Guidelines" on Cisco.com <http://www.cisco.com>

for c7200 bandwidth points oversubscription and usage guidelines.

Example 2: Showing an oversubscribed configuration.

Slots 1, 3 and 5: PA-2FE

Slots 2, 4 and 6: PA-POS-2OC3, PA-FE, PA-2H

=========

PCI bus mb1 (Slots 1, 3 and 5) has a capacity of 600 bandwidth points.Current 
configuration on bus mb1 has a total of 400 bandwidth points. This configuration is 
within the PCI bus capacity and is supported. 

PCI bus mb2 (Slots 2, 4 and 6) has a capacity of 600 bandwidth points. Current 
configuration on bus mb2 has a total of 1000 bandwidth points. The set of PA-2FE, 
PA-POS-2OC3, and I/O-2FE qualify for "half bandwidth points" consideration, when full 
bandwidth point counting results in oversubscription, under the condition that only 
one of the two ports is used. With this adjustment, current configuration on bus mb2 
has a total of 700 bandwidth points. This configuration has oversubscripted the PCI 
bus and is not a supported configuration. 

Please refer to the following document "Cisco 7200 Series Port Adapter Hardware 
Configuration Guidelines" on Cisco.com <http://www.cisco.com>

for c7200 bandwidth points oversubscription and usage guidelines.

Error Messages

The system prompts you with error messages if your port adapter configuration exceeds the guidelines in this document. Following are examples of the error messages:

•For a Cisco 7200 series router or Cisco 7200 VXR router that has an NPE-225, NPE-200, NPE-175, NPE-150, or NPE-100 installed, the following error messages are displayed when the bandwidth points exceed the system limit:

%C7200-3-PACONFIG:Exceeds 3 high speed port adapters

%C7200-3-PACONFIG:Exceeds 5 high/medium speed port adapters

%C7200-3-PACONFIG:Exceeds 800 aggregate port adapter bandwidth points

•For a Cisco 7200 VXR router that has an NPE-400, NPE-300, or NSE-1 installed, the following error messages are displayed when the bandwidth points are exceeded on the buses:

%C7200-3-PACONFIG:Exceeds 600 bandwidth points for slots 0, 1, 3 & 5

%C7200-3-PACONFIG:Exceeds 600 bandwidth points for slots 2, 4 & 6

%C7200-3-PACONFIG:Exceeds 600 bandwidth points on both odd & even numbered slots