On Wed, Mar 18, 2015 at 10:57:18PM -0400, Dan Yasny wrote:
Mode 0 is not supported under a bridge, just like mode 6
On Wed, Mar 18, 2015 at 10:47 PM, Xie, Chao <xiec.fnst@cn.fujitsu.com> wrote:
Yeah, Alex is right. And if you want to double the network’s speed in single flow, the mode 0 is only choice. But mode 0 seems not be supported in oVirt?
*发件人:* users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] *代表 *Alex Crow *发送时间:* 2015年3月19日 0:25 *收件人:* users@ovirt.org *主题:* Re: [ovirt-users] bonding 802.3ad mode
The balancing on 802.3ad only occurs for different network flows based on a hash of source and destination MAC (or can be made to add IP addresses into the calculation). A single flow will only use a single NIC in ad mode.
Alex
On 18/03/15 16:17, Nathanaël Blanchet wrote:
Hi all,
I'm used to create a mode 4 bond0 interface with two 1 Gb/s interfaces on all my hosts, and ethtool bond0 gives me a functionnal 2000Mb/s. However, when importing a vm from the export domain (NFS with a speed of 4GB/s), I always have this alert:
"Host siple has network interface which exceeded the defined threshold [95%] (em3: transmit rate[0%], receive rate [100%])" It seems that the second nic never works while the first one is overloaded. Is it an expected behaviour? I believed that the flow was balanced between the two interfaces in 802.3ad mode.
To follow up on former ressponses: what do you have on top of your bond? If you have a VM network, multiple guests are expected to have a different hash value for each, and to spread the load on mode 4. If you use the bonds for a host network (e.g. dispaly, migration, storage) you can try mode 0.