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10-2
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 10 Configuration Tasks and Troubleshooting Information
Boot Changes in Cisco IOS Release 12.2
Note Before enabling the PXF processor, you must have IP routing and IP CEF switching turned on.
To manually disable or enable the PXF processor, use the ip pxf global command. To see a current list
of Cisco IOS features supported by the PXF processor, go to Cisco.com and search for Cisco 7200
product literature for the NSE-1.
Boot Changes in Cisco IOS Release 12.2
Cisco IOS Release 12.2 changed the behavior of the ROM monitor (ROMmon) during the bootup
sequence. Previously, users could issue the break signal during the bootup sequence to break into
ROMmon, and then immediately boot a new Cisco IOS image using the boot command.
This behavior is no longer allowed when the router is using a boot image that is based on Cisco IOS
Release 12.2, because interrupting the boot process could leave the hardware and software registers in
an unknown state. Instead, use the following procedure when using a router with a Cisco
IOS Release
12.2 boot image:
Step 1 At the router console prompt, send a BREAK signal to interrupt the boot process and enter ROMmon.
Step 2 Set the configure register to boot into ROMmon by using the confreg 0x0 command.
Step 3 Use the reset command to reset the NPE and boot into ROMmon. This ensures a clean boot into
ROMmon, with all registers set to a known state.
Step 4 Set the configuration register to boot a Cisco IOS image by using the confreg 0x2102 command.
Step 5 Use the boot command to boot the desired Cisco IOS image.
Troubleshooting the NPE-G1 or NPE-G2
The procedures in this section assume that the NPE-G1, NPE-G2, Cisco uBR7200-NPE-G1, or
Cisco
uBR7200-NPE-G2 is installed without an I/O controller. Unless otherwise indicated, all
references to NPE-G1 refer to both the NPE-G1 and Cisco
uBR7200-NPE-G1. Also, unless otherwise
indicated, all references to NPE-G2 refer to both the NPE-G2 and Cisco
uBR7200-NPE-G2.
Note The NPE-G2 has its own Cisco IOS software image with the prefix “c7200p-” in the software images
filenames, including the boot image. The NPE-G2 does not boot up with a software image with the prefix
“c7200-”. Previous network processing engines, or the network services engine, do not boot up with the
“c7200p-” boot image. They use the prefix “c7200-”.
Note The Cisco uBR7200-NPE-G2 has its own Cisco IOS software image with the prefix “ubr7200p”.
For NPE-G1 or NPE-G2 ROMmon upgrade error messages, see the “ROMmon Upgrade Error
Messages” section on page 7-66.