Note: You can also use a second NIC in Slot 2 for a 4*25 GbE option.
Table 14 R740xd single-node server configuration for 10/25GbE, 2CPU, SFP+/SFP28
Description iDRAC
Monitoring
VxFlex OS
Data1
VxFlex OS
Client Network
Port1
VxFlex OS
Client Network
Port2
VxFlex OS
Data2
VxFlex OS
Management
Network
Not in
Use
Interface name
(RHEL 7)
N/A emXX emXX pXpX pXpX emXX emXX
Interface name
(SLES)
N/A emXX emXX pXpX pXpX emXX emXX
Slot name N/A Free PCI
slot, left
port
Free PCIe slot,
right port
Free PCIe slot,
right port
Free PCIe
slot, left
port
Integrated NIC 3 Integrated
NIC 4
Logical bus
address
N/A Z:0 Z:1 Y:1 Y:0 X:0 X:1
Physical port on
node
iDRAC PCI 10/25
GbE Left
PCI 10/25 GbE
Right
PCI 10/25 GbE
Right
PCI 10/25
GbE Left
Onboard 1 GbE
Left
Onboard
1G Right
Speed 1GbE 10/25 GbE 10/25 GbE 10/25 GbE 10/25 GbE 1 GbE 1 GbE
Physical Switch Mgmt Switch Data
Switch1
Data Switch1 Data Switch2 Data
Switch2
Mgmt Switch Not in use
Note: Two or more PCIe slot-based NICs are supported.
Correlate the PCI slot locations and interface names on R640/R740xd servers
Gather and correlate PCI slot locations and interface names in order to build a table with the relevant interface names
for the Linux nodes.
About this task
RHEL 7.x does not use the 70-persistent-net.rules file for Ethernet persistency. Instead, in RHEL 7.x nodes,
the interface names are in the following format: enXXX (for example: enp6s0f0 or eno3).
Other nodes (such as SLES) interface names may be in the following format: ethX (for example: eth0 or eth4).
Note:
In the following procedure, the commands are being run on a RHEL 7.x node, so the example outputs include
interface names in the format enXXX.
Procedure
1. Find the correlation between physical slot names and interface names so that you can discover the correlation
between PCI slot locations and interface names in the operating system:
Note:
For each of the following commands, write down the output and set it aside for use later in this task:
a. Correlate the physical PCIe slot to a logical bus address:
dmidecode -t slot |egrep "Designation|Current Usage|Bus Address"
This command displays the PCI location of each PCIe card. In the following sample output, the logical bus
address in the last three lines is "0000:05:00.0," which is shown as Current Usage: In Use and
correlates to physical PCIe card slot location "PCIe Slot 6."
Configuring network ports on Linux servers
VxFlex Ready Node Operating System Installation Guide for Linux 39
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