H3C Technologies H3C SecPath F5020 - Manual (Page 32)

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Step Command Remarks
3. Configure a port-specific
load sharing mode.
irf-port load-sharing mode
{ destination-ip | destination-mac |
source-ip | source-mac } *
By default, the global load
sharing mode applies.
If you execute this command
multiple times, the most recent
configuration takes effect.
Configuring IRF bridge MAC persistence
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 traffic disruption.
Depending on the network condition, enable the IRF fabric to retain or change its bridge MAC address
after the address owner leaves. Available options include:
• 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.
NOTE:
IRF fabrics cannot merge if they have the same bridge MAC address. If you use the removed bridge
MAC address 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
bridge MAC address as soon as the owner of the original address 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 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 bridge
MAC address remains
unchanged for 6 minutes
after the address owner
leaves.