Client & Case Study
SkyMesh faces a challenge common to ISPs these days - needing to conserve their limited IPv4 address space allocation, as the transition to IPv6 is dragging on - and is leveraging their IPv4 allocation with Large Scale NAT (LSN), also known as Carrier Grade NAT (CGN).
SkyMesh's existing routing and switching used industry standard equipment from Cisco to support 8,000 NBN satellite users, 20,000 IPSTAR satellite users and 1,500 NBN fibre/wireless users, but the existing equipment was failing to meet the workload required of it. It was hitting 100% CPU at 130,000 sessions, resulting in dropped packets, and they quickly needed to improve the performance. SkyMesh's first step was to try a replacement Cisco unit, an ASR1002, but it failed to cope with the net load in testing. SkyMesh considered solutions from Brocade, Cisco and A10, but it was A10 Networks that stood out as the most attractive, with its all-inclusive licensing model, which does not require the purchase of additional licenses to realize the full capacity of the unit. SkyMesh estimated that they would have needed six or eight Cisco ASR 1002 units to do the same job as the A10 CGN, which would not be at all cost effective.