Enabling Software Auto-Update For Software Image Synchronization; Configuration Prerequisites; Configuration Procedure - HP 5900 Series Configuration Manual

Step
2. Configure IRF bridge MAC
persistence.
Enabling software auto-update for software image
synchronization
The software auto-update function automatically synchronizes the current software images of the master
in an IRF fabric to all its members.
To join an IRF fabric, a device must use the same set of software images as the master in the fabric.
When you add a device to the IRF fabric, the software auto-update function compares the startup
software images of the joining device with the current software images of the IRF master. If the two sets
of images are different, the device automatically downloads the current software images of the master,
sets the downloaded images as its main startup software images, and automatically reboots with the
new software images to rejoin the IRF fabric.
If software auto-update is disabled, you must manually update the device with the software images of the
master before adding it to the IRF fabric.

Configuration prerequisites

Make sure the device you are adding to the IRF fabric has sufficient storage space for the new software
images.
If no sufficient storage space is available, the device automatically deletes the current software images.
If the reclaimed space is still insufficient, the device cannot complete the auto-update, and you must
reboot the device and access the Boot menu to delete some files.

Configuration procedure

To enable an IRF fabric to automatically synchronize software images of the master to the devices you are
adding to the IRF fabric:
Step
1. Enter system view.
2. Enable software
auto-update.
Command
•
Keep the bridge MAC address
unchanged even if the master has
changed:
irf mac-address persistent always
•
Preserve the bridge MAC address
for 6 minutes after the master
leaves:
irf mac-address persistent timer
•
Change the bridge MAC address
as soon as the master leaves:
undo irf mac-address persistent
Command
system-view
irf auto-update enable
22
Remarks
By default, the IRF fabric
preserves its bridge MAC
address for 6 minutes after the
master leaves.
Remarks
N/A
By default, software auto-update
is enabled.