Dell Force10 S4810P Configuration Manual page 256

High-density, 1ru 48-port 10gbe switch

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Table of Contents

Note: BMP will eventually exit when the timeout occurs.

DHCP Retry Mechanism

BMP requests a different DHCP offer in the following scenarios:

If the command

the boot image and the configuration file. If either download is successful, BMP will not request

another DHCP offer.

If the offer contains only a boot image that cannot be downloaded, BMP will request another DHCP

If the command

offer cannot be downloaded, BMP will request another DHCP offer.

DHCP server IP Blacklist

If the process does not complete successfully , the DHCP server IP will be blacklisted and the BMP process

will be re-initiated. A DHCP server IP is maintained in the blacklist for ten minutes. If a DHCP offer is

received from the blacklisted DHCP server, the offer will be rejected until the IP is alive in the blacklist (10

MAC-Based IP assignment

One way to use the BMP mode most efficiently is to configure the DHCP server to assign a fixed IP

address, FTOS image, and configuration file based on the system's MAC address. When this is done, the

same IP address is assigned to the system even on repetitive reloads and the same configuration file will be

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

distribution. The dhcpd.conf file shows the MAC based IP and configuration file assignment are fixed.

Parameter Example

option configfile code 209=text;

option bootfile-name code 67=text;

host HOST1 {

##### Mac to IP mapping

hardware ethernet 00:01:e8:8c:4d:0e;

fixed-address 30.0.0.20;

##### Config file name could be given in the following way

Bare Metal Provisioning 3.0 (BMP 3.0)

User port stacking

reload-type config-scr-download enable

is enabled, the DHCP offer specifies both

is enabled and the configuration file in the

Troubleshooting