** Shares of networking equipment provider Arista Networks ANET.N down 8.5% at $155.73 premarket

** Co's slightly higher Q2 forecast fails to meet elevated investor expectations

** Co sees Q2 rev of $2.8 bln, slightly above estimates of $2.77 bln; expects Q2 profit per share of about 88 cents, above estimates of 85 cents - LSEG data

** "The market is used to strong beats from Arista, and today, we don’t think the beat and full-year guidance raise was enough for the market. We suspect investors were pricing in a stronger guide, and thus the shares are selling off," said William D. Kerwin, senior analyst at Morningstar

** However, co posts Q1 rev of $2.71 bln, beating analyst estimates of $2.61 bln

** As of last close, ANET stock up 29.91% YTD