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Genericus's avatar
Genericus
Moderator
12 days ago

Veritas Flex appliance - network bond layers

We have a flex 5360, and we duplicate to an access 3350 

We have been seeing performance issues, and they were resolved by changing the xmit_hash_policy layers

By default it is layer2, needs to be changed to layer3+4!

ssh to flex, run "support shell" command to get limited shell

cat /etc/sysconfig/network-scripts/ifcfg-bond0
BONDING_OPTS="mode=802.3ad miimon=100 xmit_hash_policy=layer3+4"

If you don't have the layer3+4, you are not using all your outbound NICS!

Our flex was setup by Veritas and even after almost a year of calls for issues no one realized this was configured less than optimally!

I am seeing tremendous improvement in throughput after making the change and rebooting my flex.