Changing network interface speed

[Nyck_1]

I have a J5600 which was working fine up to a couple of days ago and now its running very slowly. I have had a look in lanadmin at the network interface and its somehow dropped to half duplex:-

lan0 HP PCI 10/100Base-TX Core [100BASE-TX,HD,AUTO,TT=1500]

How do I change this so that it runs at full duplex?

[Nyck_1]

I have been able to change it via SAM and now the server is flying.

Run sam, select "Networking and Communications", then "Network Interface Cards". Select the card you want to change and then "Configure" from the "Actions" menu. Then make sure "Autoneg" is off, "Speed" is 100 and "Duplex Mode" is Full. Then click "OK" and all is done

[Ivan Krastev · Accepted solution]

Use lanadmin:

lanadmin -X 100fd 1

This will change lan1 to 100 full-duplex.

For more see man lanadmin.

regards,
ivan

[Pete Randall]

If you are going to change the speed manually with lanadmin, you will want to make the corresponding change in /etc/rc.config.d/hp*conf in order for the setting to last across re-boots. The correct file to change depends on the driver used with your LAN card (as seen with ioscan):

btlan hpbtlanconf
btlan0 hpeisabtconf
btlan1 hpbasetconf
btlan3 hpbase100conf
btlan4 hpgsc100conf
btlan5 hppci100conf
btlan6 hpsppci100conf


Pete

[tkc]

the driver is btlan5 and the configuration file is /etc/rc.config.d/hppci100conf.

the manual for this is at :

http://www.docs.hp.com/en/J4254-90003/index.html

[rick jones]

Btlan5 is thr driver for 11.0 and earlier. Modulo "being supported" on the hardware, the grand, unified "btlan" driver drives all the DEC 2114X-based 10/100BT NICs from 11.11 onwards.

If an autoneg interface is in half-duplex, it suggests that the other end of the link was hardcoded rather than set to autoneg. Attached is some boilerplace about 100BT autoneg.

Unless and until you know that autoneg is broken with both ends of the link and the broken kit cannot be reparied or replaced, you really should leave things at autoneg.

[Nyck_1]

This has been working fine with AUTO for years and all of a sudden this J5600 started running very slowly hence the post. I have forced it to full 100 and when I get a chance I will trace the connection to the switch and check the port that its connected in to.