topic Problem with built-in LAN in Operating System - HP-UX

Problem with built-in LAN

Alan Casey — Mon, 30 Jul 2001 13:55:34 GMT

Hi,

I have a k210, and built-in LAN at 10mbps.
When I use this card transferring data is very slow, it takes about 20 seconds to transfer a 50k file using ftp.

I don't have this problem with the Token Ring card in the same box.

I am sure it's not our network.

Any ideas?

HP-UX 11.0

Re: Problem with built-in LAN

A. Clay Stephenson — Mon, 30 Jul 2001 13:59:29 GMT

Hi Alan,

I am almost certain that you have a speed/duplex mismatch between your K-box and the other end of the same connection at your switch.

You need to hard set the speed/duplex on both the K-box and at the other end. Auto-negotiation is not very reliable.

Clay

Re: Problem with built-in LAN

rick jones — Mon, 30 Jul 2001 19:32:00 GMT

the core interface on a K series is half-duplex only. it cannot autonegotiate. nor can it operate at 100 Mbit/s. it can only operate at 10 Mbit/s.

so, making sure that the switch isn't trying to do something like full-duplex 10 Mbit/s would be good. make sure the lanadmin statistics are "clean" - collisions are OK, "late collisions" are not, nor are FCS errors and the like.

Re: Problem with built-in LAN

Harinath N — Tue, 31 Jul 2001 01:37:22 GMT

Hi Alan,

This seems to be problem with network speed setting only. Ensure the correct speed on the switch side and if you find any mismatch in the system side (Autonegotiable), edit /etc/rc.config.d/hpbase100conf file and make the correct entry.

You can use the lanadmin command to view the current speed setting.

eg:
#lanadmin -x 4
where 4 is the NM-ID.

Hope this will help you.

Regards,
N.Harinath.