On Mon, 10 Nov 1997, Marc Rouleau wrote:
-On Nov 10, 12:30pm, Marc Nicholas wrote: -> The entire LAN fabric is full duplex 100baseT switched through Cisco -> Catalyst 5000s. - -Can I ask a dumb question? Is his 2.5.1 box running full duplex 100BT? -We experienced the same symptom with an Ultra 2. We also noticed lots -of late collisions on the Cisco EtherSwitch 1200 uplink port serving the -Ultra. When we switched the port to half duplex, the problem went away. - -On a related topic, I spent a fruitless half hour trying to figure out -how to configure our Ultra to do full duplex -- anyone know how to do it?
Get ready to cry.
The only way I've been able to 'force' a Solaris/Sun box to do 100fdx against their auto-configured will is:
ndd -set /dev/hme adv_100fdx_cap 1 ndd -set /dev/hme adv_100hdx_cap 0 ndd -set /dev/hme adv_10fdx_cap 0 ndd -set /dev/hme adv_10hdx_cap 0 ndd -set /dev/hme adv_autoneg_cap 0 (once you hit this, it will immediately fall over to 100fdx)
You might consider checking first what your OS/drivers/interface thinks it can do first, with:
ndd /dev/hme 100fdx_cap (0 being not capable)
ndd /dev/hme 100hdx_cap (0 being not capable (not very likely))
the way to check if your sun box is actually doing fdx is: (and speed, and link integrity)
ndd /dev/hme link_mode (0 being half, 1 being full)
ndd /dev/hme link_speed (0 being 10, 1 being 100)
ndd /dev/hme link_status (0 being offline, 1 being link integrity alive and well)
There are a few other neat things you might like to peak at. check out:
ndd /dev/hme ?
------------------------------------------------------------- Dave Cole (DC1110) | dacole@netcom.ca Systems Administrator | dacole@vex.net | office/~dacole/ Netcom Canada | www.vex.net/~dacole/ 905 King Street West, Toronto, M6K 3G9 | phone - 416.341.5801 Toronto, Ontario, Canada, Earth, Sol | fax - 416.341.5725