With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pagpPartnerPortPriority
pagp Partner Port Priority
1.3.6.1.4.1.9.9.98.1.2.1.1.9
The value of the partner's pagpPortPriority, obtained from the PAgP packet last received on this interface. 0 if pagpPartnerCount contains none(1).
Back to CISCO-PAGP-MIB MIB page.
IPHost Network monitor allows you to monitor pagpPartnerPortPriority 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.