Agree with @1xwc+17l11vOT and @fpa+17l11vOT . I am white, Caucasian Angle-Saxon British. My wife is of Asian origin. My wife ( I am ex-Cisco, she is still there) was on a CAAN call few weeks back. They ran a poll during the call and over 80% non-white employees present agreed that they are under-employed. While I know it is easy to say "of course THEY would", my wife has a PhD in Computer Science with publications. Her manager is her manager because he has worked for Cisco for 22 years.
Being ethnically British (whatever that is supposed to mean), I can vouch that there is discrimination at UK Cisco. You do not get promoted to or employed at the level you deserve if you have the wrong skin colour or "dodgy" accent, irrespective of your nationality. You are usually told it will take a "few years", just like in a government. Promotion is not skill based, but based on how long you have been in the dumps and been a yes-person for the management.