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Release Notes for the BayStack 450 10/100/1000 Series Switch
2
311523-C Rev 00
The Upgrade Process
Upgrading the BayStack 450 switch to software version V4.0.0 is a two-step
process:
1.
Download the boot code image.
2.
Download the agent image.
To properly upgrade the BayStack 450 switch, the boot code image
must be
downloaded first
, before you download the agent image. If the agent image (the
operational software) is downloaded before the boot code image, the software
may not be programmed into the BayStack 450 switch FLASH memory.
The switch indicates a failed image load as follows: An alternating LED pattern is
displayed on the BayStack 450-24T 10/100 status LEDs (ports 13 to 24), on the
BayStack 450-12T 10/100 status LEDs (ports 1 to 12), and on the BayStack
450-12F Link status LEDs (ports 1 to 12).
If this happens, cycle the switch power (power off the switch, then power it on).
Use the Software Download screen to download the new boot code image. After
the boot code image download completes, download the new agent image.
Upgrading to Software Version V4.0.0 in a Mixed Stack
When you upgrade a mixed stack
1
to software version V4.0.0, you must first
upgrade the agent code, before you upgrade the boot block. Although this is the
inverse of the normal upgrade procedure, it is necessary to ensure a successful
software upgrade.
For more information about mixed stack upgrades, see the Business Policy Switch
2000
User’s Guide
.
1
In this document, the term “mixed stack” refers to a stack configuration that includes BayStack 400 Series
switches (BayStack 450 switches and BayStack 410-24T switches)
and
one or more Business Policy
Switches.