User Manual

Rev 2.1-1.0.6
Mellanox Technologies
225
The value of the client identifier is composed of a prefix — ff:00:00:00:00:00:02:00:00:02:c9:00
— and an 8-byte port GUID (all separated by colons and represented in hexadecimal digits).
Extracting the Port GUID – Method I
 To obtain the port GUID:
Step 1. Start mst.
The following MFT commands assume that the Mellanox Firmware Tools (MFT) package has been
installed on the client machine.
Step 2. Obtain the Port GUID using the device name. The device name will be of the form: /dev/
mst/mt<dev_id>_pci{_cr0|conf0}.
Example with ConnectX-2 QDR device:
Assuming that FlexBoot is connected via Port 1, then the Port GUID is 00:02:c9:03:00:00:10:39.
Extracting the Port GUID – Method II
An alternative method for obtaining the port GUID involves booting the client machine via Flex-
Boot. This requires having a Subnet Manager running on one of the machines in the InfiniBand
subnet. The 8 bytes can be captured from the boot session as shown in the figure below.
Placing Client Identifiers in /etc/dhcpd.conf
The following is an excerpt of a
/etc/dhcpd.conf example file showing the format of represent-
ing a client machine for the DHCP server.
host1# mst start
host1# mst status
flint -d <MST_DEVICE_NAME> q
Image type: ConnectX
FW Version: 2.9.1000
Rom Info: type=PXE version=3.4.142 devid=26428 proto=VPI
Device ID: 26428
Description: Node Port1 Port2 Sys image
GUIDs: 0002c9030005cffa 0002c9030005cffb 0002c9030005cffc 0002c9030005cffd
MACs: 0002c905cffa 0002c905cffb
Board ID: (MT_0DD0110009)
VSD:
PSID: MT_0DD0110009
host host1 {
next-server 11.4.3.7;
filename "pxelinux.0";
fixed-address 11.4.3.130;