Once this is completed, you can proceed to testing the parameters. First, open the bond you created by running ifup bond N as root :.
If you have correctly created the ifcfg-bond0 bonding interface file, you will be able to see bond0 listed in the output of running ip link show as root :. First, the bond you are configuring must be taken down:. As an example, to enable MII monitoring on bond0 with a 1 second interval, run as root :. To configure bond0 for balance-alb mode, run either:.
After configuring options for the bond in question, you can bring it up and test it by running ifup bond N. If you decide to change the options, take the interface down, modify its parameters using sysfs , bring it back up, and re-test. The following list provides the names of many of the more common channel bonding parameters, along with a description of what they do.
Possible values are: stable or 0 — Default setting. The active aggregator is chosen by largest aggregate bandwidth. Reselection of the active aggregator occurs only when all slaves of the active aggregator are down or if the active aggregator has no slaves.
Reselection occurs if: A slave is added to or removed from the bond;. Reselection occurs as described for the bandwidth setting above. Specifies, in milliseconds, how often ARP monitoring occurs.
Failure to do so can cause degradation of network performance in the event that a link fails. The value is set to 0 by default, which disables it. Up to 16 IP addresses can be specified in a comma separated list.
Other valid values are active , backup , and all. Specifies in milliseconds how long to wait after link failure before disabling the link. The value must be a multiple of the value specified in the miimon parameter. Specifies whether active-backup mode should set all slaves to the same MAC address at enslavement the traditional behavior , or, when enabled, perform special handling of the bond's MAC address in accordance with the selected policy.
Possible values are: none or 0 — Default setting. This policy is useful for devices that cannot ever alter their MAC address, or for devices that refuse incoming broadcasts with their own source MAC which interferes with the ARP monitor. The disadvantage of this policy is that every device on the network must be updated by gratuitous ARP, as opposed to the normal method of switches snooping incoming traffic to update their ARP tables.
If the gratuitous ARP is lost, communication may be disrupted. When this policy is used in conjunction with the MII monitor, devices which assert link up prior to being able to actually transmit and receive are particularly susceptible to loss of the gratuitous ARP, and an appropriate updelay setting may be required. However, the second and subsequent slaves are not set to this MAC address while they are in a backup role; a slave is programmed with the bond's MAC address at failover time and the formerly active slave receives the newly active slave's MAC address.
There are also errors in dmesg always check dmesg when receiving errors from tools for system configuration! The interfaces enps0f0 and enps0f1 are UP with IPs from the network To change the bonding mode the bonding device must be in DOWN state and no slaves devices to exist in it. Set the boding state in DOWN. Because we added the two network interfaces before, now we must remove them from the group and then change the boding mode to LACP.
Now you can add the IP and set the link to UP mind the right syntax! Alternatively running the following allows for some debug information without rebooting your machine; however, a reboot will be required to commit the changes during early boot stages.
The netplan. If you do not addresses may be attached to the individual interfaces by DHCP before they are bonded. Thus at bonding time there are conflicts with existing IP logic. I suspect your cloud-init earlier in boot sequence? Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Configure bonded Asked 3 years, 8 months ago. Active 2 years, 6 months ago. Viewed 20k times. What am I missing to successfully configure my system? Improve this question. The configuration looks fine.
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