HP-UX LAN Administrator's Guide (July 2003)

DRAFT COPY Troubleshooting HP-UX LAN
Troubleshooting Q & A
Chapter 4 41
Answer: Addresses with the format 127.n.n.n are reserved as loopback addresses. Select
another IP address. You can obtain Class C addresses that are unique within the ARPANET
by contacting Government Systems, Inc.
Related Documentation: Refer to “Assigning an Internet Address” in Chapter 6.
Displaying station address: How do I locate the station address of my LAN card?
Answer: Use the lanscan command to display the station addresses of all LAN cards in the
system:
lanscan
Related Documentation: Refer to the lanscan(1M) man page.
Resetting LAN card: How do I reset the LAN card?
Answer: Run the lanadmin diagnostic by entering the following sequence of commands, where
x is the Physical Point of Attachment (PPA) of the interface you want to reset. (Use the
lanscan command to determine the PPA of the interface on the system.)
lanadmin
lan
ppa
x
reset
quit
Related Documentation: Refer to the lanadmin(1M) man page.
Tracing: What's the best way to obtain and format tracing information when I am using the
nettl utility?
Answer: HP field engineers recommend the following commands:
To begin LAN and loopback tracing, execute:
nettl -tn pduin pduout -e ns_ls_driver -f filename
To end LAN tracing, execute:
nettl -tf -e all
To format your entire LAN trace (no filtering), execute:
netfmt -Nnl -f filename .TRC1 > fmt1
netfmt -Nnl -f filename .TRC0 > fmt0
The file, filename .TRC0 is the most recent trace file. If this file does not contain the trace
information you are looking for, check the filename .TRC1 file.
To format your LAN trace using a filter file, execute:
netfmt -c filterfile -N -f filename .TRC0 > fmt0