21
•
irf mac-address persistent timer
—Bridge MAC address of the IRF fabric is retained for 6
minutes after the address owner leaves. If the address owner does not return before the timer
expires, the IRF fabric uses the bridge MAC address of the current master as its bridge MAC
address. This option avoids unnecessary bridge MAC address changes caused by device
reboot, transient link failure, or purposeful link disconnection.
•
irf mac-address persistent always
—Bridge MAC address of the IRF fabric does not change
after the address owner leaves.
•
undo irf mac-address persistent
—Bridge MAC address of the current master replaces the
original IRF bridge MAC address as soon as the owner of the original address leaves.
When IRF fabrics merge, IRF ignores the IRF bridge MAC address and only checks the bridge MAC
address of each member device in the IRF fabrics. IRF merge fails if any of the member devices
have the same bridge MAC address.
When you configure IRF bridge MAC persistence, follow these restrictions and 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.
•
If the IRF fabric uses a daisy-chain topology and has aggregate links with upstream or
downstream devices, configure the
irf mac-address persistent always
command or the
irf
mac-address persistent timer
command. The command setting prevents transmission delay
or packet loss after the address owner leaves or reboots.
•
If the IRF fabric has cross-member aggregate links, do not use the
undo irf mac-address
persistent
command to avoid unnecessary traffic disruption.
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
even if the address owner has
left the fabric:
irf mac-address persistent
always
•
Retain the bridge MAC address
for 6 minutes after the address
owner leaves the fabric:
irf mac-address persistent
timer
•
Change the bridge MAC
address as soon as the address
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
).
