ARP Flux can cause confusion to some 10G switches when using jumbo frames causing network traffic to stop.
Workaround: disable ARP flux on the affected server. If the interfaces are all on different sub-networks, run the following command:
# sysctl -w net.ipv4.conf.all.arp_filter=1
If some of the interfaces are on the same sub-network, run the following commands:
# sysctl -w net.ipv4.conf.all.arp_ignore=1 # sysctl -w net.ipv4.conf.all.arp_announce=2
If you wish to make these changes permanent, add the relevant ARP
parameter settings to /etc/sysctl.conf
:
net.ipv4.conf.all.arp_filter=1 net.ipv4.conf.all.arp_ignore=1 net.ipv4.conf.all.arp_announce=2
Bug 17982926