With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pagpHelloFrequency
pagp Hello Frequency
1.3.6.1.4.1.9.9.98.1.2.1.1.4
If pagpHelloFrequency is slow(2), this device uses a 105 second timer on this interface to time out receipt of PAgP packet. If fast(1), this device uses a 3.5 second timer. PAgP uses fast(1) by default. This value is set to slow(2) by action of the PAgP protocol.
Back to CISCO-PAGP-MIB MIB page.
IPHost Network monitor allows you to monitor pagpHelloFrequency on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.