Re: [nv-l] Events available inNetView

[James Shanks <jshanks@us.ibm.com>]

Your questions would be easier to answer if you specified the specific trap ids when you talk about traps, so that we can be sure that we are all talking about the same traps.  

But basically you get Router Down, (58916971) as opposed to Node Down (58916865) when the node that has all it's interfaces down is a router, according to NetView's definition, rather than just a node.   Look at the definition of the host in the object database with ovobjprint.  It will say whether the device is a node or a router.

The rest of your questions pertain to the netmon feature called RFI, or Router Fault Isolation.  You should find the doc we ship on that and read it.  

Basically when RFI is enabled, then when netmon detects that all the interfaces which lead to a network are down, he will mark that network as unreachable, and stop trying to poll devices in it, and stop sending all the those individual Interface Down (58916867), and Node Down (58916865) events for the devices in that network.  They instead become unreachable.  Routers become unreachable when the networks they are connected to become unreachable and thus so do the router interfaces which connect to those networks.  When the routers and router interfaces which caused the problem are back on line,  the networks become reachable again.  That trap is sent rather than the hundreds of others which indicate that everything else in the network is now back up.  That's the gist of it.


James Shanks
Level 3 Support  for Tivoli NetView for UNIX and Windows
Tivoli Software / IBM Software Group

"Georg Gangl" <Georg.Gangl@brz.gv.at> Sent by: owner-nv-l@lists.us.ibm.com 12/18/2003 05:37 AM Please respond to nv-l

To:        <nv-l@lists.us.ibm.com>         cc:                 Subject:        [nv-l] Events available inNetView

Hi  Group members,

NetView provides - besides many, many other Events - the following
specific Events:

  *  NVNDWN  &  NVNUP  .................... Node down & up
  *  NVIDWN  &  NVIUP  ......................... Interface down & up
  *  ROUTDOWN  &  ROUTERUP ......Router down & up
  *  ROUTUNREACH  ............................. Router unreachable
  *  IUNREACH  ......................................... Interface
unreachable
After reading the descriptions for these Events came up with some
questions:
  *  What's the difference between ROUTDOWN and NVNDWN ? (do NVDWN
Events include Router down & Switch down Events ? Why are there
additionally ROUTDOWN & ROUTERUP Events available ?)
  *  There are only ROUTUNREACH & IUNREACH Events in the Event
Configuration List and no "reachable" Events. Which "Clear" Alarms are
generated when a Router/Interface is reachable again ?

Thank you very much for any help that allows me to understand the
meaning of the different Events.

Cordially,

Georg Gangl

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