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Chapter 26. Managing networking
The IBM TotalStorage NAS Gateway 500 supports up to four Ethernet adapters,
allowing connectivity for up to eight physical Ethernet ports. That is, you can
connect up to eight physical ports using four dual-port Ethernet adapters.
Because the NAS Gateway 500 supports PCI-X adapters, you do not need to shut
down the system and remove the power cables before adding or replacing an
adapter. For additional information about installing and removing adapters refer to
the IBM TotalStorage NAS Gateway 500 Hardware Installation Guide.
Note: Adding or removing hardware can require root authority.
This section discusses the basic configuration of network adapters and interfaces.
For advanced configuration, refer to the IBM TotalStorage NAS Gateway 500
Advanced Configuration and Problem Determination Guide.
When a new network adapter is physically installed in the system, the operating
system automatically adds the appropriate network interface for that adapter. For
example, if you install an Ethernet adapter in your system, the operating system
assigns it the name ent0 and adds both an Ethernet Version 2 and an IEEE 802.3
interface, named en0 and et0, respectively. In most cases, there is a one-to-one
correspondence between adapter names and network interface names. For
example, Ethernet adapter ent0 corresponds to interface en0 (for Ethernet Version
2) and et0 (for IEEE 802.3).
At each system startup, the operating system automatically configures the network
interface software based upon the information in the ODM database. Initially, the
network interface is configured with default values. In order to communicate through
a given network interface, you must set the Internet Protocol (IP) address. All other
necessary attributes can use the default values. Provided below are several
networking tasks and methods used to execute these tasks using CLI, SMIT and
WebSM.
Tasks used to manage networking
The following sections describe how to perform several networking tasks:
v "Listing Network Adapters and Interfaces"
v "Configuring network adapters using TCP/IP" on page 150
v "Obtaining network interface statistics" on page 150
Listing Network Adapters and Interfaces
You can list network adapters and the network interfaces that are installed within
the NAS Gateway 500 using one of the following methods:
CLI command
The root user can enter lsparent -C -k ent at the command prompt to display a
list of the Ethernet devices within the device configuration database. You must have
root user authority to perform this operation.
The root user can enter lsdev –l en* at the command prompt to list available
Ethernet devices and interfaces in the system and their characteristics. You must
have root user authority to perform this operation.
© Copyright IBM Corp. 2004
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