With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mnFATable
mn FA Table
1.3.6.1.2.1.44.1.3.2.1
A table containing all foreign agents that the mobile node knows about and their corresponding COA (care-of address). This COA is an address of a foreign agent with which the mobile node is registered. The table is updated when advertisements are received by the mobile node. If an advertisement expires, its entry(s) should be deleted from the table. One foreign agent can provide more than one COA in its advertisements.
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