Here is some information on how NNMI handles island groups.
An Island Node Group is a group of fully-connected nodes discovered by NNMi, and NNMi
determines this group is not connected to the rest of the topology.
An example of an environment with multiple Island Node Groups is a financial institution
or retail store with many branches or stores. Each branch or store might be connected to
other branches or stores with a WAN (Wide Area Network) connection. Each branch or
store appears as an isolated island of nodes in the NNMi topology.
NNMi automatically updates Island Node Group discovery information whenever it detects
changes in Layer 2 connections. NNMi uses the Discovery Interval to determine when the
updates actually occur.Note the following about Island Node Groups:
NNMi selects a representative node in eachIsland Node Group as the Source Node
associated with an Island Node Group incident. The representative node is selected using
the following criteria:
Sort all routers in the Node Group alphabetically by name and choose the first one in the list
If no routers are in the Node Group, sort all nodes in the Node Group alphabetically by name and choose the first one in the list. Island Node Groups are identified using "Island" in the Node Group Name. NNMi also
assigns each Island Node Group name a number to ensure the name is unique.
Island Node Groups are manage internally. Therefore, NNMi administrators should not
modify Island Node Group configurations. NNMi overrides any user changes the next time
NNMi updates the Island Node Group discovery information.
Island Node Groups must have at least two nodes.
How the Status of Island Node Groups is calculated cannot be changed.
The only possible Status values for
Island Node Groups are Unknown and Normal.
Unknown indicates that NNMi cannot reach any nodes in the group. Normal indicates that
NNMi can reach at least one node in the group. Hope this helps......
HP Support If you find that this or any post resolves your issue, please be sure to mark it as an accepted solution.
Unfortunately that won't work you cannot change it. If you in the UI it will change if the nodes get rediscovered as for the links these are enhancements, here is a cut and paste from the web site.
This request is to provide utility for users to be able to modify the containment of island groups discovered by NNMi QCCR1B46280 Provide utility for users to be able to name and/or rename island groups discovered by NNMi QCCR1B46279 This request is to provide a utility for users to visualize in map all NNMi island groups (island nodes map)QCCR1B46276