Download Mellanox OFED 2.2 User Manual

Rev 2.2-1.0.1
Advertised link modes: Not reported
Advertised auto-negotiation: No
Speed: Unknown! (10000)
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: yes
4.3.3.3 Bonding Driver
EoIB uses the standard Linux bonding driver. For more information on the Linux Bonding driver
please refer to:
<kernel-source>/Documentation/networking/bonding.txt.
Currently only fail-over modes are supported by the EoIB driver, load-balancing modes including static and dynamic (LACP) configurations are not supported.
4.3.3.4 Jumbo Frames
EoIB supports jumbo frames up to the InfiniBand limit of 4K bytes. The default Maximum
Transmit Unit (MTU) for EoIB driver is 1500 bytes.
 To configure EoIB to work with jumbo frames:
1. Make sure that the IB HCA and Switches hardware support 4K MTU.
2. Configure Mellanox low level driver to support 4K MTU. Add:
mlx4_core module parameter to set_4k_mtu=1
3. Change the MTU value of the vNic, for example, run:
ifconfig eth2 mtu 4038
Due to EoIB protocol overhead, the maximum MTU value that can be set for the vNic
interface is: 4038 bytes. If the vNic is configured to use VLANs, then the maximum
MTU is: 4034 bytes (due to VLAN header insertion).
4.3.3.5 Discovery Partitions Configuration
EoIB enables mapping of VLANs to InfiniBand partitions. Mapping VLANs to partitions causes
all EoIB data traffic and all vNic related control traffic to be sent to the mapped partitions. In rare
cases, it might be useful to ensure that EoIB discovery packets (packets used for discovery of
Gateways (GWs) and vice versa) are sent to a non default partition. This might be used to limit
and enforce the visibility of GWs by different hosts.
The discovery_pkeys module parameter can be used to define which partitions would be used
to discove the GWs. The module parameters allow the using of up to 24 different PKEYs. If not
set, the default PKEY will be used, and only GWs using the default PKEY would be discovered.
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