BMC Management Network Interface

This documentation describes the IGX BMC network default configuration and steps to change the configuration. Read this documentation carefully if you need to change the network configuration, because you can only access IGX BMC through the network, and if you configure the network interface incorrectly you can lose your access to the BMC.

This is a default network configuration, which supports DHCP + STATIC network access simultaneously.

Default network configuration stored in /etc/systemd/network/00-bmc-eth0.network.

The following is the BMC network configuration in the ifconfig command.

eth0 shows the dynamic IP which is 10.41.20.228, and eth0:s shows the static IP which is 192.168.1.110.

eth0 is active if Ethernet RJ45 port connected with DHCP server, and ethO:s is active if Ethernet RJ45 port is connected with the PC/Platform.

Use the following procedure to access the network configuration from The BMC Web User Interface.

1. In the BMC Web UI, go to Settings, and then click Network.

   

2. Scroll to IPv4. The IPv4 address of the IP from which you logged into the BMC Wub UI appears. If BMC ethernet is connected with DHCP network then can see DHCP IP here, otherwise connected with static node then can see static IP(192.168.1.110) only here.

   

We don’t recommend that you change the network configuration because by default, both DHCP + STATIC are supported. If you need to switch the scenario then BMC UI only supports these cases, documented following.

• Change static IP for new connection, while on DHCP network to access BMC.

• Add more static IP in same subnet mask, while on static network to access BMC.

• Switch to DHCP, while on static network to access BMC.

Change static IP for new connection, while on DHCP network to access BMC

To add the static IPv4 address, click on the Blue color “Add static IPv4 address” box and then enter the “IP address” , “Gateway” and “Subnet mask”, then click on the “Add” button.

            

            
IP address : 192.168.1.111
Gateway : 192.168.1.1
Subnet mask : 255.255.255.0
        

Now Reload the webUI page, you will observe that the connection has been lost as you have added the new static IP address.

Connect to the compatible static network, And access the webUI from static host with above added static IP

Add more static IP in same subnet mask, while on static network to access BMC

To add the static IPv4 address, click on the Blue color “Add static IPv4 address” box and then enter the “IP address” , “Gateway” and “Subnet mask”, then click on the “Add” button.

            

            
IP address : 192.168.1.120
Gateway : 192.168.1.1
Subnet mask : 255.255.255.0
        

Now Reload the webUI page, you will observe that the connection has been lost as you have added the new static IP address.

Connect to the compatible static network, And access the webUI page from static host with above added static IP

Switch to DHCP, while on static network to access BMC

If have changed the default network configuration changed to the static IP only by adding new static IP, can change back to the DHCP by enabling it from webUI

Enable the DHCP as shown in below image while accessing webUI from static IP, then reconnect BMC with DHCP network and access the webUI again

After that look into the devices against MAC addresses in DHCP server/Router, Ex: For Ubuntu DHCP server, Restart the DHCP server and check IP under “DHCP-lease-list” command

Change/Set static IP using ipmitool IPMI tool can change the static IP by executing below command in a single command, Need to run this command in a single line only,

            

            
ipmitool lan set 1 ipsrc static; ipmitool lan set 1 ipaddr 192.168.1.110; ipmitool lan set 1 defgw ipaddr 192.168.1.1; ipmitool lan set 1 netmask 255.255.255.0
        

A IPMI tool can change the mode to dynamic IP using the below command if you need to switch from a static network.

            

            
ipmitool lan set 1 ipsrc dhcp
        

After that look into the devices against MAC addresses in DHCP server/Router, Ex: For Ubuntu DHCP server, Restart the DHCP server and check IP under “DHCP-lease-list” command