ExpertNet flushes out VoIP design flaws
VoIP network design gets a boost
Network supplier Avaya has developed a tool that can isolate network bottlenecks for critical voice packets prior to expensive VoIP deployments.
ExpertNet maps the topology of the network and the relations between Layer 2 and Layer 3 devices. Each device and desktop end point is monitored by agents spread throughout the network, as a console fires high volumes of simulated voice traffic between desktop machines.
Lorraine Denby, research scientist at Avaya Labs, said an analysis of where packets slowed or were dropped gave engineers the ability to isolate weak network devices or configurations before customers committed to VoIP.
"We take into account the topology and QoS, and end-to-end statistics," said Denby. "If you draw a line from one switch to another, you have a value for the delay. Break down the delay string and you can assign values to each point that's been touched, and see if there is a part of the network that regularly underperforms."
David Simpson, VP of international services at Avaya, said customers who had their network assessed by Avaya's services division could expect a sympathetic ear if problems emerged following a VoIP implementation.
"We would need to attach terms and conditions on the basis that networks are flexible. But if customers stay within agreed parameters, a successful assessment of the enterprise network implies Avaya's seal of approval," said Simpson.
Avaya is targeting the burgeoning network design and management market as it struggles to catch up with rivals such as Cisco.
Simpson conceded that the company's weak data presence, particularly in Europe, made services a critical market, and that its proposition would have to embrace rival technologies.
"I hate to admit it, but the majority of customers don't have Avaya data kit in their networks. However, support and service are prime concerns. Businesses need multi-vendor servicing for IP networks," said Simpson.
"Enterprise customers like to have one neck to throttle in services, but many remain unconvinced of Avaya's ability to manage their voice and data networks as one. That's why we go in with our partners."
Gartner analyst Steve Blood warned that infrastructure problems should be the least of many enterprises' fears. "A lot have not restructured their business for converged networks. In many cases the facilities management department is in charge of telecoms."
Simpson added that Avaya would "see that as a red flag".