With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfwBufferStatType
Cisco Firewall Buffer Statistic Type
1.3.6.1.4.1.9.9.147.1.2.2.1.1.2
This object identifies the type of statistic given by this row for the particular set of buffers identified by cfwBufferStatSize.
Back to CISCO-FIREWALL-MIB MIB page.
IPHost Network monitor allows you to monitor cfwBufferStatType on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.