HP-UX HB v13.00 Ch-09 - Networking Basics

HP-UX Handbook – Rev 13.00 Page 18 (of 27)
Chapter 09 Network Basics
October 29, 2013
default 10.10.10.254 UG 0 lan0 1500 
# ping 10.10.10.254
Checking network connectivity
After installation or whenever somebody suspects a network problem, we have to check whether
the network is up and running. The following table lists some examples on how to gather the
needed information. (There might be other ways to collect the same data. Please feel free to use
own methods!)
Check
Expected Results
Conclusion elsewhere
ioscan -funC lan
appropriate "Driver"
information
and "S/W State" ==
CLAIMED
Install correct driver and
check hardware
Lanscan
It shows us name, MAC-
address and Card-Instance
number of interfaces ( == Crd
In# )
If there is no MAC check
HW
netstat –in
For each network interface an
own line which shows name,
MTU, network- and IP-address
and statistics if there was some
traffic at the line
If there is no info for
interface, configuration
with ifconfig is required
ifconfig <name >
It shows IP- and broadcast
address, netmask and state
flags “UP” and “RUNNING”
Run “ifconfig … up” with
appropriate options again
and check line
netstat –rn
at least for each configured
interface one host route ( Flags
“UH” ) with its own IP as
destination and gateway and
one network route to local
subnet with its own IP as
gateway
Run “ifconfig … up” with
appropriate options again
Now test connection
ping <broadc.-addr> -n 100
If there are some other systems
in the discussed network we
have to see answers of
different systems
Check network
information – netmask
and broadcast address -
and configuration at
hub/switch