Displaying Shared Nic/Virtual Nic By Ethtool Command; Use Dedicated Nic; Use Shared Nic - Hitachi Compute Blade 500 Series User Manual

Table 10-4 Settings specified for network segments that use inter-LPAR
When a network redundant
configuration (such as bonding) is
used in Linux
When Intel(R) PROSet connection
monitoring is used in Windows

Displaying shared NIC/virtual NIC by ethtool command

• The displaying contents of shared NIC/virtual NIC by ethtool command of
Linux are as follows for both onboard and mezzanine card.
Supported ports
Supported link modes

Use Dedicated NIC

• When SR-IOV is enabled, a performance may degrade because
multiqueue operating in dedicated mode does not work.
For details, see the Hitachi Compute Blade Emulex Adapter User's Guide
for Hardware.
However, it cannot be changed in LP mode. If necessary, change it in
Basic mode.

Use Shared NIC

• Shared NIC function in which LPAR manager emulate the LAN controller.
Performance is influenced according to an environment such as use
situation of processor. In communication with an external network, the
difference of communication performance with a physical LAN controller
and the range of fluctuation of performance also become large as the
number of shares of a physical controller increases. Therefore use a
physical LAN controller properly according to requirement to be used,
such as environment and band width. When using many physical LAN
controllers or 10Gps high-speed physical LAN controllers, performance of
shared NIC may not appear as equivalent to a bandwidth.
• When even one LPAR is in an activate mode, an addition and deletion of
shared NIC cannot be executed. When changing a configuration of shared
NIC, all the LPARs need to be in a Deactivate mode.
Hitachi Compute Blade 500 Series Logical partitioning manager User's Guide
communication
Item
Set "fail_over_mac=1" for the bonding option.
Alternatively, set [Disable(ALL)] for [Inter-LPAR
Packet Filtering] in the [Virtual NIC
Assignment] screen.
Set [Disable(ALL)] for [Inter-LPAR Packet
Filtering] in the [Virtual NIC Assignment]
screen.
Table 10-5 Ethtool command
Item
Notes
Setting
Support
FIBRE
1000baseT/Full
10-9