Installing and Administering LAN/9000 Software

68 Chapter4
Troubleshooting LAN/9000
Troubleshooting Q & A
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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(1M) utility?
Answer: The 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
nettl(1M) appends TRC0 or TRC1 to the name you give the raw trace
file.
Related Documentation: Refer to chapter 5, “LAN Resources.”
Intermittent networking problems: I'm experiencing intermittent
networking problems on my computer. What should I check to ensure
proper operation of my networking software?
Answer: Upper layer software often requires loopback. Check
/etc/rc.config.d/netconf to be sure that the loopback entry is
correct. The line in netconf file should read:
LOOPBACK_ADDRESS=127.0.0.1
Related Documentation: Refer to chapter 6, “Network Addressing”.
Performance: I've noticed a significant drop in system response time
and performance. What steps can I take to improve it?
Answer: Performance may be affected by many different factors.
Sometimes removing pseudo drivers from the kernel for networking
software that you may not be using improves performance. The problems