With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ctsvDownloadServerPort
ctsv Download Server Port
1.3.6.1.4.1.9.9.741.1.5.1.1.3
This object indicates the UDP port number used by the downloaded server.
Back to CISCO-TRUSTSEC-SERVER-MIB MIB page.
IPHost Network monitor allows you to monitor ctsvDownloadServerPort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.