05-14-2012 08:36 AM
We ware installing NNMI on a large network
On this network we have a lot of sites which are connected by wan.
these wan are managed by different providers (such as Orange, SFR, Easynet)
So NNMi create a lot of Islands
Is somebody have the same configurations us and how he manage the islands :
- what have you done for having well understanding events, For changing this even "Remote site containing node xxxxx is unreachable" form Island_yyy is not easy to locate
- What have you done to clarify the use of a lot of island (renaming, ....)
On our precedent product, we had Fanout, which is a virtual node, we are used to connect all the remote sites to the central site
This virtual node have no ip address, it have on multiple interfaces
Thank for your help
05-14-2012 10:17 AM
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......
If you find that this or any post resolves your issue, please be sure to mark it as an accepted solution.
05-14-2012 07:34 PM
Not possible in this release see the following enhancements
Hope this helps.
05-15-2012 01:05 AM
Thanks for your information
there is nothing to do to make the use of island more compressive for operator
a name ISLAND_999 is not very friendly
We can't change this name , may be in node group ?
about the 3 links : I can't access them
05-16-2012 09:53 PM
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
Hope this helps.