I've got 6509s with MSFC2 cards doing our layer 3. The MSFC2s are running IOS 12.1(26)
We are seeing horribly slow file transfers from out Windows2008 servers, most of the time large files will fail to copy.
After doing a wireshark sniff it looks like the windowing is going over the 64k limit.
I see that RFC1323 is supported in IOS release 12.2(8) but I don't see that version available for the MSFC2.
My question is. Has anyone else ran into this problem with the MSFC2? What IOS version will allow me to increase the windowing on the router. Am I going to have to upgrade to the Sup720 to get RFC1323 support?