With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
appnIsInSsSendRpc
appn Is In Secondary Stage Send Rpc
1.3.6.1.2.1.34.4.1.6.2.1.33
The secondary stage send residual pace count. This represents the secondary stage number of message units (MUs) that can still be sent in the current session window.
Back to APPN-MIB MIB page.
IPHost Network monitor allows you to monitor appnIsInSsSendRpc on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.