trouble shooting new server connections

[sandra ramos]

HI,
I'm fairly new at troubleshooting network issues and we've just put new servers online. I want to be proactive and have some idea of what to look for and where to look if we start having network issues. Ideas of the best approach to take are welcomed. Thanks

[Michael Tully]

lanadmin (using menu, second page of display, for stats)
netstat commands (see man pages)
ifconfig
lanscan
ndd

[sandra ramos]

Thanks so much!!

[Ron Kinner]

linkloop
is a good one to try while it is working so you will know if it works at all and what to expect.

nslookup
is useful for troubleshooting DNS problems.

run traceroute to your most common clients and record the paths so you will know if something changes.


Make sure your routers respond to pings from your server or the server may decide that the gateway is down and refuse to use the router. (Can be turned off with ndd.)

Rob

[Dave Olker]

Hi Sandra,

My friend and colleague Pat Kilfoyle has given several excellent presentations on network troubleshooting and performance issues at previous HP World and InterWorks conferences. I just found one of his presentations was publicly available at the following site:

ftp://198.151.251.239/pub/conference/hpworld2003/proceedings/1496.pdf

Hope you find this useful.

Regards,

Dave

[Michael Tully]

You might like to fix this up some time as well. Please remember people give up their time and resources to assist you.

I have assigned points to 0 of 47 responses to my questions

[Petr Simik_1]

netstat or
lsof (need to be installed)
Good if you want to see processes within network.

[rick jones]

ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_ndd.txt

ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_netstat.txt