Cisco VIP4-50= Manuel d'installation et de configuration - Page 11
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The microcode boot image in the PROM initializes the VIP4 and then assists downloading the VIP4
microcode image. All interfaces of the same type (VIP4, and so on) will load the same microcode image,
either from the microcode image bundled with the Cisco IOS or from an image stored in system Flash
memory. Although multiple microcode versions for a specific interface type can be stored concurrently
in Flash memory, only one image can load at startup.
The show controllers cbus command displays the currently loaded and running microcode version for
each interface processor and VIP4. The show startup-config EXEC command shows the current system
instructions for loading microcode at startup.
Software and interface processor microcode images are carefully optimized and bundled to work
together. Overriding the bundle can result in system incompatibilities. We recommend that you use the
microcode included in the software bundle. For a complete description of microcode and downloading
procedures, refer to the
ROM Monitor Overview
The VIP4 read-only memory (ROM) monitor, known as Rommon, is firmware. It runs a brief set of
system diagnostics, initializes the VIP4 hardware, and downloads a copy of the Cisco IOS image.The
ROM monitor loads the Cisco IOS image from Flash memory or from a TFTP server. While multiple
Cisco IOS images can be stored in RSP Flash memory, just one can be loaded at system startup.
The VIP4 ROM monitor functions similarly to the boot loader image on the RSP, which runs a copy of
the Cisco IOS image. The boot loader image allows the router to access the Cisco IOS image when
powering up or initializing the system.
Tools and Parts Required
You need the following tools and parts to install or upgrade a VIP4:
•
•
•
The VIP4 requires at least one port adapter installed in order to be supported. A single-width port adapter
Note
must have a blank port adapter installed in the empty port adapter slot location.
If you need additional equipment, contact a service representative for ordering information.
Agency Approvals
The VIP4 is designed to comply with and meet the following agency approvals:
OL-3673-01
"Upgrading VIP4 Microcode" section on page
Number 1 Phillips and a 3/16-inch flat-blade screwdriver
ESD-prevention equipment or disposable grounding wrist strap, included with all Cisco products
VIP4 (For specific compatibility requirements, see the
Fourth Generation Versatile Interface Processor (VIP4) Installation and Configuration Guide
28.
"Software Requirements" section on page
Agency Approvals
9.)
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