Scale-in | EFA Impact |
---|---|
Link removal from default physical network | VLAN provisioning for end-points is done when Neutron ports are unbound to a host/compute. Hence, removing a link which belongs to default physical network does not have any impact, only link-mapping table is updated. |
Link removal from non-default physical networks | For non-default physical networks, VLAN provisioning is done at network level. Hence,
the links that are removed from non-default networks are automatically
removed from the existing networks. On EFA, interface is removed from
the corresponding EPGs. If there are any errors during EFA unbinding, the operation succeeds. This behavior is consistent with delete port operation. |
Links bound to port-channels on non-default physical networks | Removing a link which maps to LAG interface does not affect EPG
unless the last member of the LAG is removed in link mapping. For example, LAGs have two entries in the link mapping. Removing only one entry does not affect the existing EPG. Only when the last entry for that LAG is removed, EFA removes the LAGs from corresponding EPGs. |
Scale-out | EFA Impact |
---|---|
Link addition to default physical network | VLAN provisioning of end-points is done when Neutron ports are bound to a host/Compute. Hence, adding a link which belongs to default physical network does not have any impact, Only link-mapping table is updated. |
Link addition to non-default physical networks | For non-default physical networks, VLAN provisioning is done during
network-create time. Hence, the new links that are added to non-default
networks are automatically added to the existing networks. On EFA, the interface is added to the corresponding
EPGs. If there are any errors during EFA binding, the whole operation fails. |
Links bound to port-channels on non-default physical networks | If the switch link is a LAG interface, as soon as the first link to LAG is added, the corresponding LAG is added to the EPGs. Further link addition on that LAG is no-op from EFA perspective. |
File option in efa-link-add | File option enables saving link mappings in a file for bulk
configuration. If there is an error in adding a link during file replay, the operation is aborted. You can correct the errors and replay it. |