On Thu, 4 Nov 1999, Mittal, Ashish wrote:

I have a quad network card on a F720 connected to 2 sun and one hp unix box. every once in a while i loose the connectivity to these boxes and when i try to re-mount i have lots of problems. Bringing the ports up and down using ifconfig does not help. Sometimes one port will come up and the others will not...so it is very intermittent.

Has anyone had this problem before...any possible solutions....

Ashish Mittal

Probably obvious, but make sure that *both* ends of each link are configured the same way, ie half or full duplex. Auto-negotiation at 100Mbit/s is notoriously unreliable. Eg on the Netapp side

ifconfig e0 mediatype 100tx-fd ...

Does a netstat -i reveal many errors? You should get virtually no errors or collisions on a full duplex link.

Also NetApp seemed to introduce a bug around version 5.2.1 which caused our interfaces to clock up lots of errors. We logged a call with them and they recommended we put in the /etc/rc file

rc_toggle_basic; setflag de_store_n_forward 1; rc_toggle_basic

This fixed the errors (on our old F230s) but we still seem to need it on the new 740s running 5.3.2 - maybe someone at Netapp would like to comment on this?

Dave Atkin ------------------------------------------------------ Dave Atkin, Head of Technical Services Computing Service, University of York, YORK YO10 5DD Phone: +44-1904-433804 (ddi) Fax: +44-1904-433740 Email: D.Atkin@york.ac.uk ------------------------------------------------------