iDrac Network connection has been dropped

Using iDrac Virtual Console
‘The viewer has terminated
Reason : The network connection has been dropped.’

Edit C:\Program Files (x86)\Java\jre1.8.0_181\lib\security\
jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 1024, \
EC keySize < 224, DES40_CBC, RC4_40

Upgrade Dell firmware

METHOD 1: Online
1. When Dell booting, press F10=System Services
2. Once in “Unified Server Configurator”
click Platform Update
Make sure your server can connect to Internet either by static ip or dhcp

3. Click “Launch Platform Update”

4. Once you have setup the network and checked your current versions you can simply connect to FTP.DELL.COM to see what updates are available.  Select the ones you want to install and the rest will happen for you including any reboots that are required

METHOD 2: Offline

1. Download and install “Repository Manager” from
2. Run Dell Repository Manager Updater, then update
3. Run Dell Repository Manager Data Center version
click Sync Database with Dell Online Catalog
4. click “My Repositories” tab
click New/Create New Repository
Name and Description
   Name: R320
Base Repository
   click Dell Online Catalog
Select Brand
   select your hardware type, for example Server/PowerEdge/Rack
Select OS
   tick Windows 64-bit
   tick Linux (32-bit and 64-bit)
Select Models
   click Select Model(s)
   tick PowerEdge R320/NX400
Select Bundles
Optional Components
   click Finish
5. click Export
Select Destination
   click Bootable ISO
Set BIOS to boot from CD

METHOD 3: From within XenServer

First put your XenServer into maintenance mode to migrate all the running VMs off it.
Login to your server via ssh as root and run:
# wget -q -O – | bash

This will configure yum with the Dell software repository. We can now download the required firmware upgrade software, and upgrade files:
# yum install dell_ft_install
# yum install $(bootstrap_firmware)

We can then run the following command to view current firmware versions:
# inventory_firmware

which gives the following output on my Dell R415:
BIOS = 1.2.5
ST2000NM0001 Firmware = ps04
PERC H200A Controller 0 Firmware =
Dell 32 Bit Diagnostics, v.5154A0, 5154.1 = 5154a0
SAS/SATA Backplane 0:0 Backplane Firmware = 1.07
NetXtreme II BCM5716 Gigabit Ethernet rev 20 (eth0) = 6.2.12
NetXtreme II BCM5716 Gigabit Ethernet rev 20 (eth1) = 6.2.12
Dell Unified Server Configurator, v., A00 =
System BIOS for PowerEdge R415 = 1.2.5

To upgrade the firmware, we run:
# update_firmware –yes

This will apply any firmware updates required, and will then require a reboot to complete.
Whilst this is a great way to apply multiple updates with a single reboot the only downside is that some more recent firmware files are not included by default (for example the latest BIOS) so we have to download and install these manually:
# wget
# chmod +x R415_BIOS_JW0MK_LN32_1.8.6.BIN
# ./R415_BIOS_JW0MK_LN32_1.8.6.BIN

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