Release Notes

Upgrading software 5
Release Notes for the Business Policy Switch 2000 Software Version 2.0
The stacking software compatibility requirements are as follows:
• Pure BPS 2000 stack—All units must be running the same software version.
• Pure BayStack 450 stack—All units must be running the same software
version.
• Hybrid stack:
— All BPS 2000 units must be running the same software version.
— All BayStack 410 units must be running the same software version.
— All BayStack 450 units must be running the same software version.
— All software versions must have the identical ISVN.
This section discusses the following topics:
• “Upgrading software in a Pure BPS 2000 stack,” next
• “Upgrading software in a Hybrid stack” on page 5
Upgrading software in a Pure BPS 2000 stack
To download, or upgrade, software in a Pure BPS 2000 stack:
1 Download the operational software, or agent, image.
2 Download the diagnostics image.
However, if you are currently using software version 1.0, 1.0.1, or 1.1, you must
upgrade to software version 1.1.1 before upgrading to version 2.0.
Upgrading software in a Hybrid stack
The physical order of the units and the unit numbering in the Hybrid stack does
not affect the upgrading process at all. In addition, the cabling order regarding
upstream/downstream neighbors does not affect the process.
Note: Once you begin the upgrading process, do not interrupt the
process at all. Interrupting the downloading (or upgrading) process may
cause loss of connectivity.