US industry watchers are speculating that the diet which the big companies have been on while they digested the firms they swallowed last year could be over.
Following on from two takeovers by Cisco earlier in the month, Motorola said on Monday that it had agreed to buy broadband equipment maker RiverDelta Networks in a shares swap deal valued at $300m.
Motorola said the deal was part of its strategy to improve its broadband unit's offerings and would give it the ability to sell to network operators a more complete network capable of supporting the latest data, voice and video applications.
On Friday Cisco said it had agreed to acquire Allegro Systems, a startup developing virtual private network (VPN) acceleration technology that Cisco already had a minority investment in. It handed over another $181m in stock to acquire the rest of the business.
Cisco said that Allegro's technology will improve the performance of the company's existing VPN and security products. Allegro is only the second firm Cisco has acquired this year after taking over dozens during 1999 and 2000.
Between a mid-December announcement that it would purchase wireless networking vendor ExiO Communications, Cisco did not announce another acquisition until 11 July, when it said it would buy AuroraNetics, a chip developer which it hopes will give it an entry into the metropolitan networking arena.
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