Configuring Irf Bridge Mac Persistence - H3C S5830V2 Configuration Manual

Step
1. Enter system view.
2. Enter IRF port view.
3. Configure the port-specific
load sharing mode.

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 preserve 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.
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 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 a correct network topology after the address owner leaves the IRF fabric.
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 the IRF fabric.
If two IRF fabrics have the same bridge MAC address, they cannot merge.
To configure the IRF bridge MAC persistence setting:
Step
1. Enter system view.
Command
system-view
irf-port member-id/port-number
irf-port load-sharing mode
{ destination-ip | destination-mac |
source-ip | source-mac } *
Command
system-view
23
Remarks
N/A
N/A
By default, packets are
distributed automatically across
IRF member links based on
packet types.
If you execute this command
multiple times, the most recent
configuration takes effect.
Remarks
N/A