i have a couple computers on my network that are having problems connecting to the network behind our cisco phones. This morning a user brought their computer in for an upgrade to windows 7 from vista. the laptop has worked fine behind the phone but after the windows 7 install the PC doesnt not recognize the network connection. it says "network cable unplugged".
i can remove the network cable from my SW port on my 7960 and plug it directly into the windows 7 PC and it works perfectly. i also tested the PC connection behind two different 7940. i was thinking it could be the firmware on the 7940 (win 7 users model) but it happens on my 7960 too.
i forced the PC to use full duplex 100, 10 half duplex etc.. i tried every combination possible.
i even made sure the switch port and the PC duplex settings were the same.
i made sure the network card has the latest drivers.
the two computer with problems are a HP and a Toshiba.
What is the exact version of cucm? What is the 7940/60 phone load version? What is the model of switch to which the phone is connected? What version is the switch running? What does the switch port config look like for the port on which the phone is connected?
SCCP70.9-0-3S is a phone load for a 7970 model IP phone.
Your subject and original problem description indicated this issue was observed with the 7940/60 model phones. The 7940/60 model phones have a similar code base, but the 7970 is of a different code base.
What is the phone load version being used by the 7940/60 phones?
You should try the latest available phone load for those models which is 8.1.2 (aka P00308010200).
Does this problem also occur if you plug the Windows 7 PC into the back of a 7970 model phone running SCCP70.9-0-3S?
I also agree that upgrading the NIC drivers would be a good thing to try.
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