topic Re: network in Operating System - HP-UX

network

tarek_3 — Mon, 17 Jan 2005 03:48:22 GMT

Hi everyone

I have this situation:
I have a unix server : rp3440
OS : 11i v1
and a network card A6825A 1000Base-T.
my problem is i can't turn the speed of the network card from 1gb to 100 or to 10.
the server is connected to a switch where the speed is 100.

any one have an idea?

thx for your help

Re: network

Ravi_8 — Mon, 17 Jan 2005 04:08:57 GMT

Hi

#lanadmin -X 100 0

0 is the ppa number,

Re: network

Michael_356 — Mon, 17 Jan 2005 04:11:13 GMT

Hi there,

Try doing it this way.

Lanscan: get ppa/nmid # for the interface.

Lanadmin -X 100FD 1

This will set the speed 100MB and the duplex to full for card instance 1.

Replace the 1 with the ppa/nmid # from the lanscan output.

regards

Michael

Re: network

Ravi_8 — Mon, 17 Jan 2005 04:13:16 GMT

Hi,

forget my first post

#lanadmin -X 100FD

FD full duplex, you can make it half duplex also by specifying
#landmin -X 100HD

Re: network

tarek_3 — Mon, 17 Jan 2005 04:44:39 GMT

hi everyone
i know how to turn from 1000 to 100 but the problem i am not unable to do it
Please help
Regards
TS

Re: network

Florian Heigl (new acc) — Mon, 17 Jan 2005 07:06:56 GMT

This sounds strange - we have a few of these adapters running at 100BT,FDX - could You post any kind of error messages?
Did You try setting it in /etc/rc.config.d/hp???lanconf
(I can't look it up right now)

Autoneg should better be according to the switches' setting, otherwise some problems might occur.

Re: network

Ravi_8 — Mon, 17 Jan 2005 07:55:18 GMT

Hi Hossoun

as root, you must be able to use lanadmin.

why are not able to do? post the error you are getting with lanadmin

Re: network

rick jones — Tue, 18 Jan 2005 12:35:35 GMT

The 6825 _should_ be able to autosense and then autoneg. for _gigabit_ operation, all GbE NICs _must_ be in auto.

If, however, you have hardcoded your switchports to specific duplex settings there may be an issue with autoneg. When the other side is hardcoded, autoneg is supposed to "fail" (per the spec). and when autoneg "fails" the side trying to autoneg must (again per the spec) enter half-duplex.

the lanadmin commands to alter the nic settings require one to be root. what exact error messages are you getting when you try the lanadmin command?

Re: network

Rita C Workman — Tue, 18 Jan 2005 13:06:34 GMT

Hassoun,

If you have a gig port, but your switch only has 100BT ports, then 100BT is the best you can set your nic speed to. The port and the nic card must match.
And since the 100BT is generally set to autoneg=off, then ensure that your card and your switch port are BOTH set the same.

Like was mentioned, if you set your nic card to autoneg, then you are probably going to have network issues.

Rgrds,
Rita