With IPHost Network Monitor you can run simple snmp requests against a LINKSYS device in your network.
routingSubnetMask
routing Subnet Mask
1.3.6.1.4.1.3955.3.4.1.33.1.3
Back to LINKSYS-MODEL-MIB MIB page.
IPHost Network monitor allows you to monitor routingSubnetMask on LINKSYS device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring LINKSYS access points right now.