Users Guide

After 10 minutes of rediscovery attempts, the server IP address is blacklisted as shown in the system log:
00:05:45:%STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/
47.
00:05:45:%STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Ma 0/0.
00:05:45:%STKUNIT0-M:CP %JUMPSTART-5-DHCP_OFFER_REJECTED: Server IP address
10.11.197.39 was previously rejected.
00:05:59:%STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/0.
00:05:59:%STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/1.
MAC-Based IP Assignment
One way to use BMP mode most eciently is to congure the DHCP server to assign a xed IP address, Dell Networking OS image,
and conguration le 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 conguration le is
retrieved when using the DNS server or the network-cong le to determine the hostname.
The assigned IP address is only used to retrieve the les from the le server. It is discarded after the les are retrieved.
Following is an example of a conguration of the DHCP server included on the most popular Linux distributions. The dhcpd.conf le
shows assignment of a xed IP address and conguration le 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";
Cong le
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;
Cong le
filename "FTOS-SE-8.3.10.1.bin"; option config-file "S4810-2.conf"; }
DHCP Retry Mechanism
BMP can request dierent DHCP oers
BMP requests a dierent DHCP oer in the following scenarios:
• If you enter the reload-type jump-start config-download enable command, the DHCP oer species both the
boot image and the conguration le.
– If either the image or the conguration download is successful, BMP does not request another DHCP oer.
– If the image download is successful but the conguration download fails, the switch boots up with the default conguration.
228
Bare Metal Provisioning (BMP)