HP 6125XLG R2306-HP 6125XLG Blade Switch IRF Configuration Guide - Page 14

ARP MAD, BFD MAD application scenario

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• When the IRF fabric splits, the IP addresses of the masters in the split IRF fabrics take effect, and the two masters can establish a BFD session. If you execute the display bfd session command, the state of the BFD session between the two devices is Up. Figure 6 BFD MAD application scenario Customer premise network Device Link aggregation IRF BFD MAD link VLAN 2 192.168.1.2/24 VLAN 2 192.168.1.3/24 Master IRF link Subordinate Internet ARP MAD ARP MAD detects multi-active collisions by using extended ARP packets that convey the IRF domain ID and the active ID. You can set up ARP MAD links between neighbor IRF member devices, or between each IRF member device and an intermediate device (see Figure 7). If an intermediate device is used, you must also run the spanning tree feature between the IRF fabric and the intermediate device. 10

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10
•
When the IRF fabric splits, the IP addresses of the masters in the split IRF fabrics take effect, and the
two masters can establish a BFD session. If you execute the
display bfd session
command, the state
of the BFD session between the two devices is
Up
.
Figure 6
BFD MAD application scenario
ARP MAD
ARP MAD detects multi-active collisions by using extended ARP packets that convey the IRF domain ID
and the active ID.
You can set up ARP MAD links between neighbor IRF member devices, or between each IRF member
device and an intermediate device (see
Figure 7
). If an intermediate device is used, you must also run the
spanning tree feature between the IRF fabric and the intermediate device.
Device
Master
Subordinate
IRF
Internet
Customer
premise
network
IRF link
Link aggregation
BFD MAD link
VLAN 2
192.168.1.2/24
VLAN 2
192.168.1.3/24