With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
ipv6RouteValid
ipv6 Route Valid
1.3.6.1.2.1.55.1.11.1.14
Setting this object to the value 'false(2)' has the effect of invalidating the corresponding entry in the ipv6RouteTable object. That is, it effectively disassociates the destination identified with said entry from the route identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant ipv6RouteValid object.
Back to ibm-ipv6 MIB page.
IPHost Network monitor allows you to monitor ipv6RouteValid on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM computers right now.