Management Ip Address Considerations; Service Ip Address Considerations - IBM V7000 Introduction And Implementation Manual

4.1.4 Management IP address considerations

The IBM Flex System V7000 Storage Node management IP address provides access to the
system management interfaces, including the GUI and CLI. The management IP address is
also used to access remote services such as authentication servers, NTP, SNMP, SMTP, and
Syslog systems, if configured. The management IP address is configured during first-time
setup of your IBM Flex System V7000 Storage Node. See 4.3, "IBM Flex System V7000
Storage Node Setup Wizard" on page 170.
The management IP address is associated with one of the control canisters in the IBM Flex
System V7000 Control Enclosure and that control canister becomes the
Should this node go offline, either planned or unplanned, the management IP address does a
failover to the surviving partner control canister's Ethernet port and it becomes the
configuration node
Tip: IP addresses that are used by hosts to access the system over an Ethernet
connection are different from management IP addresses.
Observe the following rules when configuring a management IP for your IBM Flex System
V7000 Storage Node:
Ethernet port 1 (1 Gbps) must be configured with an IPv4 or IPv6 system address.
Ethernet port 2 (1 Gbps) can optionally be configured with a second system address.
A maximum of one IPv4 address and one IPv6 address can be configured on each of
Ethernet ports 1 and 2 for system addresses.
To ensure system IP failover operations, Ethernet port 1 on all nodes must be connected
to the same subnet. The system IP address can failover to any control node in the system.
If Ethernet port 2 (1 Gbps) is configured with a system IP address, Ethernet port 2 on all
nodes must also be connected to the same subnet. However, the subnet for Ethernet port
2 does not have to be the same as Ethernet port 1.
Management addresses cannot be configured on ports 3 or 4 (10 Gbps), if present.

4.1.5 Service IP address considerations

The Service Assistant is a web application that helps troubleshoot and resolve problems in a
Flex System V7000 Storage Node enclosure. Service Assistant is connected to on each IBM
Flex System V7000 Control Enclosure node canister through the Service IP address.The
node canister cannot be active as part of a system while it is in service state.
The Ethernet port 1 on each node canister is used for system management, and also used for
service access when required. In normal operation, the Service IP addresses are not needed
However, in the event of a node canister problem, it might be necessary for service personnel
to log on to the node to perform service actions.
Tip: The password is required to access the system through the Service IP address. The
authentication of the superuser is always local; therefore, this user ID can be used even
when a remote authentication server that is used for other users is not available.
To establish connectivity, the management node attempts to use Dynamic Host Configuration
Protocol (DHCP) to acquire its initial IP address for the Chassis Management Module (CMM)
Ethernet port. If DHCP is not installed or is enabled and fails, the management node uses the
static IP address.
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configuration node
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