Alcatel OmniSwitch/Router Betriebsanweisung PDF herunterladen (Seite 136)

CMM Files Managing CMM Directory Content

page 5-8 OmniSwitch 6250/6450 Switch Management Guide May 2012

Scenario 4: Roll back to Previous Version of Switch Software

Later that year, an upgraded image file is released from Alcatel-Lucent. The network administrator loads

the new file through FTP to the working directory of the switch and reboots the switch from the working

directory. Since the switch is booted from the working directory, the switch is running from the working

directory.

After the reboot loads the new image file from the working directory, it is discovered that the image file

was corrupted during the FTP transfer. Rather than having a disabled switch, the network administrator

can reboot the switch from the certified directory (which has the previous, more reliable version of the

ENI image file) and wait for a new version of the image. In the meantime, the administrator’s switch is

still functioning.

This is illustrated in the following diagram:

Switch Rolls Back to Previous File Version

RWC

1. The new file is

installed in the

working directory.

2. The new file is

loaded through a

reboot from the

working direc-

tory. The switch is

running from the

working directory.

3. The file is cor-

rupted and does

not boot correctly.

4. Switch reboots

from certified

directory by using

the old file. Since

the working and

certified directo-

ries are not the

same, it will be

running from the

certified directory.

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Alcatel OmniSwitch/Router Betriebsanweisung Seite 136