With IPHost Network Monitor you can run simple snmp requests against a NETGEAR device in your network.
agentServicePortDefaultGateway
agent Service Port Default Gateway
1.3.6.1.4.1.4526.10.1.2.4.3
The switch's ServicePort default gateway
Back to NETGEAR-SWITCHING-MIB MIB page.
IPHost Network monitor allows you to monitor agentServicePortDefaultGateway on NETGEAR device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring NETGEAR switches right now.