Investigating network troubles
Identify networking problems:
-
Review the /etc/hosts file to verify that the system you
are trying to reach is in the file.
-
Use the ping command to determine if another system is responding.
See
ping(1Mtcp)
and
``Troubleshooting TCP/IP''
for more information.
-
Verify that the Internet services daemon inetd
is running by running the ps -ef command.
-
Use the
ifconfig(1Mtcp)
command to review the configuration information for all currently-installed
network devices.
You can identify an interface that is not running.
See
ifconfig(1Mtcp)
and
``Verifying the configuration of network interfaces''
for more information.
-
Use the
netstat(1Mtcp)
command to review the status of network traffic and interface information.
You can request the status by ICMP, IP, TCP,
and UDP protocol or for all protocols.
See
netstat(1Mtcp)
and
``Displaying per-protocol statistics''
for more information.
-
Use the
netinfo(1Mbnu)
command to list the devices and protocols installed on your machine and
to display specific protocol and device mappings.
You can identify any protocols that are not mapped to any device
and any device that is not mapped to any protocol.
See
netinfo(1Mbnu)
and
``Listing entries in the netdrivers file''
for more information.
-
The system status daemon rwhod can degrade system and network
performance.
You are advised not to run it.
-
The routing daemon routed is run by default.
If your system has limited memory and there are no routers
on your network, you can disable this daemon.
See
Administering TCP/IP and Internet services
for more information.
Next topic:
Advanced system performance issues
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Shifting the workload to off-hours
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 22 April 2004