Low-end/SOHO router revenue posted the largest year-over-year increase, up 44%, Infonetics found. But they were down sequentially, as were high-end routers, which “are holding up well” on an annual basis as core upgrades proceed, the firm notes.

Mid-range routers had the poorest performance of the quarter, as buyers substituted those units with lower-cost alternatives and purchases from the public sector continued to decline, Infonetics found.

Market leader Cisco modestly increased its overall enterprise router share during the last two quarters, posting its largest revenue market share in 12 months, at 74.7% in Q1. Huawei saw its revenue jump 79% from last year and unit shipments climb 130%.      

In terms of unit share, the top five enterprise router vendors in 1Q12 are Cisco, HP, OneAccess, ADTRAN and Huawei, according to Infonetics.