With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cPrefPathRMapMatchSrcAddrMask
Cisco Pref Path R Map Match Src Addr Mask
1.3.6.1.4.1.9.9.592.1.1.3.1.2
This object represents the mask associated with the source address represented by cPrefPathRMapMatchSrcAddr. The value of this object is meaningful only if the corresponding instance of cPrefPathRMapMatchSrcAddr contains a valid FC-ID.
Back to CISCO-PREFERRED-PATH-MIB MIB page.
IPHost Network monitor allows you to monitor cPrefPathRMapMatchSrcAddrMask on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.