Cisco - Sun Incompatibility?

[DanielBowen]

I have a Cat5500 with Windows 2000 and Sun Microsystem servers attached into the 10/100TX line card. All are set to full duplex and 100Mbps. When the switch is downed for any reason, the ports with Windows 2000 servers attached keep their duplex and speed settings, but the ones with Sun Microsystems attached revert to half duplex 10 Mbps autonegotiate. These servers are running Solaris 8.

Any ideas on how to stop this happening would be great

regards,
Daniel

 

[teaboy]

Have you set the network card on the sun box to 100 full (sorry, wasn't sure if you meant the cards are set to 100 full or the ports on the switch)? If not, try the following (assuming that your using hme0 on the sun box):

ndd -set /dev/hme instance 0
ndd -set /dev/hme adv_100hdx_cap 0
ndd -set /dev/hme adv_100fdx_cap 1
ndd -set /dev/hme adv_10fdx_cap 0
ndd -set /dev/hme adv_10hdx_cap 0
ndd -set /dev/hme adv_100T4_cap 0
ndd -set /dev/hme adv_autoneg_cap 0

The last should be done if your switch is forced to 100 full.

Then try downing/upping the switch. If that doesn't do it, trying downing and upping the card on the sun box to see if it negotiates properly again. Technically it shouldn't negotiate at all, so the downing/upping of the card shouldn't be needed.
Hope this helps.