Rivals were quick to try and capitalize on Juniper's strategy of growth by acquisition, pointing out that customers face a period of uncertainty and doubt.
As Juniper consolidates its recent purchases, Juniper's A/NZ director Shaun Page said competitors will try and use it as a "window of opportunity".
But he was quick to add the acquisitions have given the company 57 percent of the high-end router market in Australia.
Page claims the company is ideally positioned to take on the likes of Expand and Packeteer.
However, Packeteer A/NZ managing director Bed Hackney said Juniper's buying spree is "the best endorsement Packeteer could get".
"It shows that WAN optimization is a strategically important market, which is what we've been saying for years," he said, adding that Packeteer is still the market leader.
Packeteer has some 7000 customers worldwide, of which Hackney estimates 10 percent are in Australia and New Zealand.
Hackney said Peribit customers face the uncertainty of how Juniper will execute its product roadmap.
"There are no obvious overlays and there will be a bit of work integrating the technology into its existing routers," he said.
Expand Networks Australia and New Zealand director Tony Burke shares Hackney's sentiment.
"A large organization like Juniper paying top dollar for Peribit is really a validation of the technology," Burke said, adding he would not be surprised if another large networking vendor now bought its way into the WAN optimization market.
"It's a strategic move so it will cause others to take note," he said.
Expand has about 200 customers here, and, according to Burke, the company mostly comes across Packeteer, not Peribit, when pitching for business. Burke said he is surprised that the acquisition was announced nearly two quarters in advance resulting in a period of uncertainty and doubt for Peribit customers.
Rodney Gedada contributed to this report