VLANs - VLANs - UG1586

The following limitations apply to VLANs:

• Onload only accelerates traffic over VLANs where the master device is either a Solarflare network device, or over a bonded interface that is accelerated. If the VLAN's master is accelerated, then so is the VLAN interface itself.
• Traffic with a single layer of nested VLAN tags is accelerated only when using full featured firmware. On X4 series adapters, the traffic must also be using the Enterprise datapath.

  Nested VLAN tags are otherwise not accelerated, but function as normal.

• The ifconfig command and other related commands such as ip link return inconsistent statistics on VLAN interfaces (not master interface).
• When a Solarflare VLAN tagged interface is subsequently placed in a bond, the interface continues to be accelerated, but the bond is not accelerated.
• Hardware filters installed by Onload on the adapter can act on the VLAN identifier only when using full featured firmware. On X4 series adapters, the traffic must also be using the Enterprise datapath.

  Hardware filters installed by Onload on the adapter otherwise only act on the IP address and port. Therefore if the same IP address:port combination exists on different VLAN interfaces, only the first interface to install the filter receives the traffic.

In cases where Onload does not accelerate the traffic it continues to work via the OS network stack.

For more information and details and configuration options refer to the Setting Up VLANs section of the Solarflare Server Adapter User Guide.