Setup Guide

Industry Standard Upgrades with BMP

Dell EMC Networking OS follows the Industry Standard Upgrades with BMP. Following are the steps to perform the upgrade process:

1 The chassis loads in BMP mode.

2 The BMP_BOOT is a special variable in Nonvolatile Random Access Memory (NVRAM) for Industry Standard Upgrade during BMP

BOOT process.

3 The BMP_BOOT variable in NVRAM validates the presence of BOOT conguration.

4 If you did not congure BMP_BOOT variable, the system initiates the DHCP process and receives the oer. However, if you did

congure BMP_BOOT variable, the system applies and commits the BOOT congurations present in the NORMAL_BOOT variable.

Then, the system starts the DHCP process and receives the oer.

5 The oer validates the presence of image le.

6 If the image le is present in the DHCP oer, the system validates the current active boot partition with the DHCP oer image

header.

7 If the image header matches, the system skips the image le download process and validates the presence of conguration le in the

oer.

8 If the image header mismatches, the system initiates the image upgrade process.

9 The system validates the BMP_BOOT variable in the NVRAM as part of the upgrade process. If you did not congure BMP_BOOT

variable, the system assigns the inactive boot partition to BMP_BOOT variable. Then, it stores the copy of the current BOOT

parameters in NORMAL_BOOT variable of NVRAM. It also upgrades the image to the inactive boot partition.

10 The BMP process exits and the system cleans up the BMP_BOOT and NORMAL_BOOT variables, if the conguration or script le is

not present in the DHCP oer. However, if the conguration or script le is present, download and apply the conguration or script

le.

11 The system validates the auto-save BMP option. If you enabled the auto-save option, the system commits the conguration

changes and cleans up the BMP_BOOT variables and exits the BMP process. If you disabled the

auto-save option, the changes to

the congurations do not take eect. The system cleans up the BMP_BOOT and NORMAL_BOOT variables and exits the BMP

process.

BMP Process Overview

When your system boots up in default BMP mode, the following items are requested.

1 The current (new) Dell EMC Networking OS build image.

2 The conguration le or pre–conguration script (EXPECT, TCL, or Z-shell [ZSH] script).

3 A list of checksums for all these components.

NOTE

: If you already installed the SmartScripts package, the pre–conguration scripts can be in Perl, Python or Ruby.

NOTE: The conguration le maintains normal BMP functionality when a pre–conguration script is not sent.

BMP Operations

BMP is supported on the user ports and management ports of a switch.

If you enabled virtual link trunking (VLT) on aggregator switches and you are conguring the top-of-rack (ToR) switch to load BMP,

congure the aggregator switches using the lacp ungroup member-independent vlt command if the DHCP and le servers are

reachable using the interface congured as part of the VLT link aggregation group (LAG).

BMP eases conguration in the following ways:

Bare Metal Provisioning