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not change. If the address owner does not rejoin within the time limit, the IRF fabric uses the bridge MAC
address of the current master as the bridge MAC address.
Usage guidelines
The command setting takes effect only after the address owner leaves the IRF fabric. Events such as
active/standby or master/subordinate switchovers cannot trigger the command setting to take effect.
IRF bridge MAC persistence specifies the amount of time an IRF fabric can continue using a bridge MAC
address as its bridge MAC address after the address owner leaves.
If ARP MAD or ND MAD is used, use the
undo irf mac-address persistent
command to disable IRF bridge
MAC persistence.
Configure the
irf mac-address persistent always
command on the IRF fabric that meets the following
requirements:
•
The IRF fabric uses a daisy-chain topology.
•
The IRF fabric has aggregate links with upstream or downstream devices.
The persistence setting prevents transmission delay or packet loss after the address owner leaves the IRF
fabric.
By default, an IRF fabric uses the bridge MAC address of the master device as its bridge MAC address.
Layer 2 protocols, such as LACP, use this bridge MAC address to identify the IRF fabric. On a switched
LAN, the bridge MAC address must be unique.
To avoid duplicate bridge MAC addresses, an IRF fabric can change its bridge MAC address
automatically after the address owner leaves. However, the change causes temporary service disruption.
Depending on the network condition, you can enable the IRF fabric to retain or change its bridge MAC
address after the address owner leaves.
If two IRF fabrics have the same bridge MAC address, they cannot merge.
Examples
# Enable the IRF bridge MAC address to persist forever.
<Sysname> system-view
[Sysname] irf mac-address persistent always
irf member description
Use
irf member description
to configure a description for an IRF member.
Use
undo irf member description
to restore the default.
Syntax
irf member
member-id
description
text
undo irf member
member-id
description
Default
No description is configured for an IRF member device.
Views
System view
Predefined user roles
network-admin
