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6-4 3COM Security Switch 6200 Hardware and Software Users Guide
Upgrading the System Software Using the Safe Upgrade
and Rollback Features
Upgrading
from Software
to a UP While
an RP is
Operational
(Rollback)
Newer versions than 2.1 and greater allow you to install the system software
to a UP while an RP is operational. This is done using /usr/os/sbin/install-cos.
Install-cos can install to either part 1 or 2 of the disk. You can run install-cos
while the system is booted from the install server or the system is running off
the disk.
!
CAUTION:
Caution: Reboot into the UP first, making sure the UP is working, then
upgrade within the UP, leaving the good RP alone.
To install to the UP of your system while the system is running with the RP:
1. Enter the following command:
/usr/os/sbin/install-cos -p 2 <release directory>
2. Manually configure the UP identically to the RP (System configuration
and applications).
3. Switch to the RP and upgrade the RP.
4. If upgrades work correctly you are done. If, however, the upgrades fail,
reboot the system. By default the system boots with the functional UP.