With IPHost Network Monitor you can run simple snmp requests against a NETGEAR device in your network.
agentNetworkDefaultGateway
agent Network Default Gateway
1.3.6.1.4.1.4526.10.1.2.3.3
The switch's network default gateway
Back to NETGEAR-SWITCHING-MIB MIB page.
IPHost Network monitor allows you to monitor agentNetworkDefaultGateway 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.