Re: tkined <-> BONES, etc questions.

P.Lister@cranfield.ac.uk
Tue, 21 May 96 10:55:19 +0100

> Another thing I am looking at is providing an "IP maintain" type service,
> which will add/delete to a map - with a 4 site network with > 3000 machines -
> such a mechanism is needed. However has anyone else done this - or planning
> to do so?

> > 4. Is there a auto-correcting TOOL for manipulated (wrong) maps?
> > If, for instance, I accidently added some links between nodes,
> > and I can't remember which. Can those links be identified
> > and removed?
> >
> This too would be nice - some cross checking scripts (with optional
> correction)? Again an area I shall be examining - but is anyone else doing?

We have a bridge network of 3 sites, ~2000 machines. My ethernet bridge probe
updates an msql database which contains mappings between mac addresses and IP
addresses, and info about which part of the network the mac address was seen
on. The idea is to have no human intervention in creating maps.

Each entry has an associated event, noting date, time and (when I get to it)
how it was derived, and who added it (in this context, "who" is usually the
machine whose snmp table was pulled, but might be a human if added manually).
One could locate all the entries updated in a single event and remove them
with one sql query.

My intention is to be able to see bad info in the database as well as good, so
that I can detect when things go wrong. An example is duplicate IP addresses
on different systems; I want to see the *wrong* MAC address as well as the
right one, but to differentiate, I also need to know *when* they were seen.

Peter Lister Email: p.lister@cranfield.ac.uk
Computer Centre, Cranfield University Voice: +44 1234 754200 ext 2828
Cranfield, Bedfordshire MK43 0AL UK Fax: +44 1234 751814
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