We installed a Netvanta 4148 in August/September 2022. We've had nothing but issue after issue. Most appear to be related to VPN traffic. Currently running a point to point VPN between the 4148 and a Netvanta 3140. TCP probe at 60 sec interval works most of the time. ICMP probe at 14 sec interval fails at least 50% of the time. We replaced a 3140 with this 4148 in order to improve throughput. All we've done is create headache after headache for ourselves. Adtran tech support has no clue what is wrong with this 4148. Anyone else having similar issues?
