► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Cisco Systems' shares tumbled after results this week that included a sales forecast downgrade, partly on nervousness over the US National Security Agency spying scandal. Lex's Oliver Ralph and Joseph Cotterill consider parallels between Cisco and Huawei.<br /><br />► Lex: http://bit.ly/1I14JZF<br /><br />► FT Markets: http://bit.ly/1J5HNd3<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
