SNMP monitoring performance, especially when polling Interface (IF) and IP MIBs, is directly influenced by the total number of physical, virtual, and VPN interfaces configured on an ION device. On lower-end devices, limited CPU resources can cause SNMP response times to degrade as the interface count increases.

The ION 1000/1200/1200-s/2000/3200 devices are designed to provide stable and reliable SNMP monitoring when configured with up to 40–45 total interfaces, including VPN interfaces.

• Configurations exceeding this limit may result in slow SNMP responses or intermittent timeouts.
• Under high interface density, SNMP processes may not receive sufficient CPU cycles, impacting monitoring reliability.

For deployments requiring more than 40–45 interfaces, it is recommended to use higher-capacity devices such as the ION 5200/9200. These devices offer increased CPU resources and are better suited to support large interface counts while maintaining consistent SNMP performance.