4.6. Setup Network Parameters

Install and configure all network interfaces and corresponding network connections.

Refer to IBM's internal network technologies home page for resources on configuring and tuning networks and TCP/IP.

The network interfaces section of the lsnode report from each node shows the network interfaces that are configured.

To determine how many network interfaces are available on (AIX):

%lsdev -C -S a -c if

%netstat -i

To determine how many network interfaces are available (Linux):

% netstat -i

To determine if an SP switch is available (AIX):

%lsdev -C -S a -l css0

%netstat -i

To view all IP addresses associated with a local host on AIX (i.e., for all network interfaces): Note: Does not work for SP switch interface.

% for x in `lsdev -C -S a -c if -F name`; do lsattr -E -a netaddr -l $x -F value

done

To view additional information for each network interface (AIX):

% for x in `lsdev -C -S a -c if -F name`; do ifconfig $x

lsattr -El $x done

For non-AIX platforms, use the Name column from netstat -iin the ifconfig commands. Note the IP address follows the inet phrase in the output from the ifconfig command.

To test whether an IP address is reachable (non-zero exit status indicates the ping was not successful):

%ping -c 1 <ipAddress>

Isolate Kerberos communication to the designated control network(s) on all HPSS and DB2 nodes in order to separate the HPSS control and data paths.

Place all HPSS, DB2, and Kerberos server node IP addresses in a local host table (/etc/hosts). For AIX, configure the node to use the table as backup in the event of a DNS failure. The file /etc/netsvc.conf should be modified to look like the following:

hosts=bind,local

The netsvc.conf file is used to specify the ordering of host name resolution. In the above ordering, DNS will be used first; if the host name is not found, then the local /etc/host file

HPSS Installation Guide

July 2008

Release 6.2 (Revision 2.0)

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IBM HPSS manual Setup Network Parameters, Hpss Installation Guide July Release 6.2 Revision 129