1833760 Members
2170 Online
110063 Solutions
New Discussion

NIC CARD TEST

 
SOLVED
Go to solution
Nobody's Hero
Valued Contributor

NIC CARD TEST

I have a suspect nic card that has a high retry rate (tcpRetransBytes) from "netstat -sP tcp" comand. Could this be a sign of a port or card going bad?

Does anyone have a script or a suggestion to help test this card to see if it is healthy?
I always have problems in this area and I end up just swapping out the card, but I want to try and diagnore the nic this time.

Thanks.
UNIX IS GOOD
8 REPLIES 8
Tim Nelson
Honored Contributor

Re: NIC CARD TEST

I am sure you could google around and find a load tester.

How about just a large ftp from a to b then watch the error counts ?

Replace card or use another NIC and test again, if the errors persist then you have a cabling or switch issue.

Nobody's Hero
Valued Contributor

Re: NIC CARD TEST

THanks Tim,

Where would you check for errors after the ftp test? where is the best place to veiw the error count in your opinion?
UNIX IS GOOD
Sandman!
Honored Contributor

Re: NIC CARD TEST

Look inside the various logfiles like syslog; the circular buffer dmesg to name a few. The status of the NIC card in ioscan maybe NO_HW etc.
Fabio Ettore
Honored Contributor
Solution

Re: NIC CARD TEST

Hi,

I see the following methods to check NIC healty:

- check syslog.log for some lan failures;
- take heavy ping tests to and from this system, check for lost packets;
- issue linkloop, follows an example:
linkloop -i

where PPA number and Station Address are from lanscan command. It should be better to select PPA number from a system and Station Address from another system and test linkloop command.

Best regards,
Fabio
WISH? IMPROVEMENT!
Eric SAUBIGNAC
Honored Contributor

Re: NIC CARD TEST

Bonsoir,

"Where would you check for errors after the ftp test? where is the best place to veiw the error count in your opinion?"

I think the simpliest place is output of command "lanadmin -g " where PPA is same number as "card Instance" from output of lanscan.

With lanadmin -g you will find some error counters that should be close to 0.

Hope this will help

Eric
Tim Nelson
Honored Contributor

Re: NIC CARD TEST

lanadmin will also provide stats. You can even clear the counters if you wish.

rick jones
Honored Contributor

Re: NIC CARD TEST

HP-UX (11.11 at least) netstat doesn't recognize the 'P' option in this context, and the output doesn't get called tcpRetransBytes - are you actually running HP-UX here or some other OS?

If some other OS, the suggestions for HP-UX things to do will be semantically (sp?) helpful, but will be off in syntax.
there is no rest for the wicked yet the virtuous have no pillows
VK2COT
Honored Contributor

Re: NIC CARD TEST

Hello,

If you have maintenance contract with HP, you can ask for linkinfo Shell script.

linkinfo is the new data gathering tool that replaces the following utilities:

gbeinfo
10gbeinfo
100btinfo
hfinfo
apainfo

I worked with HP WTEC team on some bug fixes and the new version was published just
before the Christmas.

I would hope the script will eventually be
available to all.

Regards,

VK2COT

VK2COT - Dusan Baljevic