IXB28504XGBEFS Intel, IXB28504XGBEFS Datasheet - Page 132

• Manufacturer Part Number: IXB28504XGBEFS
• Manufacturer: Intel

Specifications of IXB28504XGBEFS

• Lead Free Status / Rohs Status: Compliant

Figure 39.
11.2.2
11.2.2.1
Intel NetStructure
TPS
132
®
Safe System Upgrade architecture overview
The SSU Agent (SSUA) controls SSU functionality at the board level. The SSUA:
The SSU Manager (SSUM) is responsible for the SSU functionality at the chassis/system
level. SSUM receives, dispatches and handles SSU requests from the operator, transfers
image properties to the board and handles the status of the SSU operations on board.
The image repository is a storage area that is accessible to the SSUA and SSUM. The
image repository contains a set of images that can be used for upgrading board
software and for booting.
SSU functionality offers two methods of image upgrade, remote and local:
SSUA Operation
Dual Image Support
In order to support the automatic rollback mechanism in case of image upgrade failure
(invalid image, part of image hangs, kernel fatal error during initialization, target image
does not work properly, etc.), a dual image concept must be supported. The concept is
based on the following assumptions:
• SSU Manager (SSUM)
• Monitors and controls all SSU operations on the board (including BMC upgrade)
• Upgrades software on the flash memory - stores new software images on the NPU
• On SSUM request, the SSUA reads and sends properties of the software stored in
• Local image upgrade enables manual image load to local memory using the TFTP or
• Remote image(s) upgrade is performed using the IPMI protocol, images are loaded
IXB2850 Packet Processing Boards
or BMC flash memory.
flash memory and running on the board (including the querying of the BMC for
image properties on its local flash).
Xmodem utilities. After the image is loaded, the operator flashes the image using a
simple commands. It is important that the correct image type (operational code
and accompanying header) are use. The SSU ensures that the loaded image is
written into the appropriate area of flash. In the case of a local image upgrade, the
Boot Monitor console is used, for both NPU and BMC images.
into local memory using the NFS or TFTP utilities, then the image is written to flash.
NFS/TFTP
SSU Manager
SSU Agent
Flash memory
Document Number: 05-2443-006
IXB2850—Maintenance
January 2007