User Manual

Driver FeaturesRev 2.1-1.0.6

Mellanox Technologies

The example above shows, two eIPoIB interfaces, where eth4 runs traffic over ib0, and eth5 runs

traffic over ib1.

Figure 3: An Example of a Virtual Network

The example above shows a few IPoIB instances that server the virtual interfaces at the Virtual

Machines.

To display the services provided to the Virtual Machine interfaces:

Example:

In the example above the ib0.2 IPoIB interface serves the MAC 52:54:00:60:55:88 with no

VLAN tag for that interface.

4.8.3 VLAN Configuration Over an eIPoIB Interface

eIPoIB driver supports VLAN Switch Tagging (VST) mode, which enables the virtual machine

interface to have no VLAN tag over it, thus allowing VLAN tagging to be handled by the Hyper-

visor.

 To attach a Virtual Machine interface to a specific isolated tag:

Step 1. Verify the VLAN tag to be used has the same pkey value that is already configured on that

ib port.

Step 2. Create a VLAN interface in the Hypervisor, over the eIPoIB interface.

Step 3. Attach the new VLAN interface to the same bridge that the virtual machine interface is

already attached to.

# cat /sys/class/net/eth0/eth/vifs

SLAVE=ib0.2 MAC=52:54:00:60:55:88 VLAN=N/A

# cat /sys/class/infiniband/mlx4_0/ports/<ib port>/pkeys/*

# vconfig add <eIPoIB interface> <vlan tag>

# brctl addif <br-name> <interface-name>