Administrator Guide

5. Click OK to save your changes. Otherwise, click Cancel. If you clicked OK, the user is removed, the table is updated, and any sessions
associated with that user name are terminated.
NOTE: The system requires that at least one user with the manage role to exist.
Configuring network ports on controller modules
If you used the default 10.0.0.2/10.0.0.3 IPv4 addresses to access the guided setup, Dell EMC recommends changing the IPv4 addresses
to avoid an IP conflict if you have more than ME4 Series storage system on you network.
You can manually set static IP addresses for network ports on controller modules. Alternatively, the IP addresses can be set automatically
using DHCP for IPv4 or Auto for IPv6, which uses DHCPv6 and/or SLAAC. When setting IP values, you can choose either IPv4 or IPv6
formatting for each controller. You can also set the addressing mode and IP version differently for each controller module and use them
concurrently. For example, you could set IPv4 on controller module A to Manual and set IPv6 on controller module B to Auto.
When using DHCP mode, the system obtains values for the network port IP address, subnet mask, and gateway from a DHCP server if it
is available. If a DHCP server is unavailable, current addressing is unchanged. You must have some means of determining what addresses
have been assigned, such as the list of bindings on the DHCP server. When using Auto mode, addresses are retrieved from both DHCP
and Stateless address auto-configuration (SLAAC). DNS settings are also automatically retrieved from the network.
Each controller has the following factory-default IP settings:
• IP address source: Manual
• Controller A IP address: 10.0.0.2
• Controller B IP address: 10.0.0.3
• IP subnet mask: 255.255.255.0
• Gateway IP address: 10.0.0.1
When DHCP is enabled, the following initial values are set and remain set until the system can contact a DHCP server for new addresses:
• Controller IP addresses: 169.254.x.x (where the value of x.x is the lowest 16 bits of the controller serial number)
• IP subnet mask: 255.255.0.0
• Gateway IP address: 10.0.0.0
169.254.x.x addresses (including gateway 169.254.0.1) are on a private subnet that is reserved for unconfigured systems and the
addresses are not routable. Using these addresses prevents the DHCP server from reassigning the addresses and possibly causing a
conflict where two controllers have the same IP address. As soon as possible, change these IP values to proper values for your network.
For IPv6, when Manual mode is enabled you can enter up to four static IP addresses for each controller. When Auto is enabled, the
following initial values are set and remain set until the system can contact a DHCPv6 and/or SLAAC server for new addresses:
• Controller A IP address: fd6e:23ce:fed3:19d1::1
• Controller B IP address: fd6e:23ce:fed3:19d1::2
• Gateway IP address: fd6e:23ce:fed3:19d1::3
CAUTION:
Changing IP settings can cause management hosts to lose access to the storage system after the changes
are applied in the confirmation step.
After you set the type of controller network ports to use, you can configure domain names using the Domain Name Service (DNS). DNS
accepts IPv4 and IPv6 address formats. For more information about the DNS feature, see About configuring DNS settings.
NOTE: DNS settings are automatically applied when using DHCP for IPv4 and Auto for IPv6.
Set IPv4 addresses for network ports
Perform the following steps to set IPv4 addresses for the network ports:
1. Perform one of the following to access Network options:
• In the Home topic, select Action > System Settings, and then click the Network tab.
• In the System topic, select Action > System Settings, and then click the Network tab.
2. Select the IPv4 tab.
IPv4 uses 32-bit address.
3. Select the type of IP address settings to use for each controller from the Source drop-down menu:
• Select Manual to specify static IP addresses.
• Select DHCP to allow the system to automatically obtain IP addresses from a DHCP server.
42
Working in the Home topic