With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnPdfEntry
Cisco Ggsn Pdf Entry
1.3.6.1.4.1.9.9.240.1.3.10.1.1
Entry containing the PDF servers details (name and IP address) and also how the GGSN should communicate with PDF, like timeout when there is no response, number of retries.
Back to CISCO-GGSN-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnPdfEntry 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.