21
•
irf mac-address persistent always
—Bridge MAC address of the IRF fabric does not change
after the address owner leaves.
NOTE:
IRF fabrics that have the same bridge MAC address cannot merge. If you use the removed
bridge MAC owner as the master device in a new fabric, the bridge MAC of the new fabric is the
same as the old fabric. For the two IRF fabrics to merge, you must change the bridge MAC
address of the old IRF fabric.
•
undo irf mac-address persistent
—Bridge MAC address of the current master replaces the
original one as soon as the owner of the original bridge MAC leaves.
When you configure IRF bridge MAC persistence, follow these guidelines:
•
If ARP MAD or ND MAD is used, configure the
undo irf mac-address persistent
command to
enable immediate bridge MAC address change after the address owner leaves.
•
Configure the
irf mac-address persistent always
command in the following situations:
TRILL is configured. The persistence setting ensures that other devices in the TRILL
network can maintain correct network topology after the address owner leaves.
The IRF fabric uses a daisy-chain topology, and it has aggregate links with upstream or
downstream devices. The persistence setting prevents transmission delay or packet loss
after the address owner leaves.
To configure the IRF bridge MAC persistence setting:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure IRF bridge MAC
persistence.
•
Retain the bridge MAC address
permanently even if the owner
has left the IRF fabric:
irf mac-address persistent
always
•
Retain the bridge MAC address
for 6 minutes after the owner
leaves the fabric:
irf mac-address persistent
timer
•
Change the bridge MAC
address as soon as the owner
leaves the fabric:
undo irf mac-address
persistent
By default, the IRF bridge MAC
address remains unchanged for
6 minutes after the address
owner leaves the fabric.
Enabling software auto-update for software image
synchronization
IMPORTANT:
To ensure a successful software auto-update in a multi-user environment, prevent anyone from
rebooting member devices during the auto-update process. To inform administrators of the
auto-update status, configure the information center to output the status messages to configuration
terminals (see
Network Management and Monitoring Configuration Guide
).
The software auto-update feature synchronizes the current software images of the master in an IRF
fabric to all its members automatically.
