[nsteel]

Did Cisco really invent MACSec?! I thought it was cooked up by the IEEE and supported in hardware from many vendors. I imagine they all have their own bugs though, it's quite a complicated spec. I know some switch/router vendors also now offer hardware-accelerated end-to-end encryption, similar to IPsec, Nokia call their's anysec but I'm sure the other players have their own. The benefit of those is you'd get full bandwidth (e.g. Tbps).

[wmf]

Usually one vendor prototypes a feature then they take it to IEEE/IETF for standardization. Probably half of all network protocols were invented by Cisco.