Bonding Packets lost

Hello,

I implemented a network with the following topology:
Topology.PNG
Later, I set up the bond in ‘active backup’ mode using ARP.
However, 15% of the packets are lost because it is constantly switching between ether1 and ether2.
How to solve?
ping.PNG
Configuration:

[admin@R1] /interface bonding> print
Flags: X - disabled, R - running 
 0  R name="bonding1" 
mtu=1500 
mac-address=6C:3B:6B:FE:6D:08 
arp=enabled 
arp-timeout=auto 
slaves=ether1,ether2 
mode=active-backup 
primary=ether1 
link-monitoring=arp 
arp-interval=100ms 
arp-ip-targets=192.168.100.254 
mii-interval=100ms 
down-delay=0ms 
up-delay=0ms 
lacp-rate=30secs 
transmit-hash-policy=layer-2 
min-links=0