How to check Number of Collision?

[Hill_1]

Dear all,
For my information, in Sun Solaris we could use "netstat -i" to get the number of collision. May I know what command should we use to get this info in HP-Unix 11.0?
Thanks in advanced.

[Michael Tully]

You can use 'netstat -i' or for a more comprehensive information have a look at 'lanadmin'

Also have a look at a recent thread:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,11866,0xa2c5cf38d6bdd5118ff10090279cd0f9,00.html

HTH
-Michael

[Printaporn_1]

use lanadmin , then issue command lan then display.

[Roger Baptiste]

Hi,

Options to check the collisions :
netstat -i
lanadmin (menu based)

You can also use glance or gpm for
viewing network state.

netstat has options where you can
view statistics based on protocol too.

HTH
raj

[Sanjay_6]

Hi Hill,

Look at the thread below for more info.

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=4154e3ad1b770ba58b/screen=ckiDisplayDocument?docId=200000056243682

You can also use "lanscan" for a menu based info.

Hope this helps.

thanks

[Bill Hassell]

Note that most modern machines and networks run 100Base-T full-duplex and thus, there will never be any collisions. Ina 10Base-T network, collisions and directly proportional to the load on the network...if the network is severely overloaded, than the collisions will increase as a percentage of the traffic. A bad LAN card or host on the same network might be flooding the subnet with UDP packets or other useless traffic, thus causing unnecessary collisions.

But on a 100Base-T network, is lanadmin reports that your card is running half-duplex, you may have a 25-35 meter cable length (which causes auto-negotiation to fail between some combinations of LAN card and switch connection.

If the switch is capable of 100-full duplex, you may need to set the switch AND your HP-UX card to 100-full duplex manually by editing the appropriate 100-base file in /etc/rc.config.d, and then change the value without rebooting by using lanadmin -x.