With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgspLinkRxCongestionState
Cisco GSP Link Rx Congestion State
1.3.6.1.4.1.9.9.336.1.6.1.1.96
The Signalling link Received Side congestion status of this link. 0 abate, 1 onset is the received side congestion level
Back to CISCO-ITP-GSP-MIB MIB page.
IPHost Network monitor allows you to monitor cgspLinkRxCongestionState 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.