Reference Guide

Table Of Contents
MAC-Based IP Assignment
One way to use BMP mode most efficiently is to configure the DHCP server to assign a fixed IP address,
Dell Networking OS image, and configuration file based on the switch’s MAC address.
When this is done, the same IP address is assigned to the switch even on repetitive reloads and the same
configuration file is retrieved when using the DNS server or the network-config file to determine the
hostname.
The assigned IP address is only used to retrieve the files from the file server. It is discarded after the files
are retrieved.
Following is an example of a configuration of the DHCP server included on the most popular Linux
distributions. The dhcpd.conf file shows assignment of a fixed IP address and configuration file based on
the MAC address of the switch.
Description Parameter Example
option boot-filename code 67 = text;
option tftp-server-address code 150 = ip-address;
option config-file code 209 = text;
subnet 10.20.30.0 netmask 255.255.255.0 { option domain-name-
servers 20.30.40.1, 20.30.40.2;
BMP 2.0 Syntax
host S4810-1 {
MAC to IP
mapping
hardware ethernet 00:01:e8:8c:4d:0e; fixed-address 10.20.30.41;
Dell Networking
OS image
option boot-filename "tftp://10.20.4.1/FTOS-SE-8.3.10.1.bin";
Config file
option config-file "http://10.20.4.1/S4810-1.conf";}
host S4810-2 {
BMP1.0 syntax
hardware ethernet 00:01:e8:8c:4c:04;
MAC to IP
mapping
fixed-address 10.20.30.42;
Dell Networking
OS image
option tftp-server-address 10.20.4.1;
Config file
filename "FTOS-SE-8.3.10.1.bin"; option config-file
"S4810-2.conf"; }
DHCP Retry Mechanism
BMP can request different DHCP offers
BMP requests a different DHCP offer in the following scenarios:
If you enter the reload-type jump-start config-download enable command, the DHCP
offer specifies both the boot image and the configuration file.
Bare Metal Provisioning (BMP)
253