Bill,
You said you only have the loopback
address in DNS, is that true for reverse lookup as well? or do you list
all the ip addresses in reverse-lookup with one name. This is the
present scenario that i am working with.
A seperate question on the seed file...
can you list a range of ip addresses (Servers mainly) and then list negated
single entries within that range or vice versa? or is this also too much
work for netmon?
Carlos
|
| "Evans, Bill" <Bill.Evans AT hq.doe DOT gov>
Sent by: owner-nv-l AT lists.us.ibm DOT com
03/08/2004 03:21 PM
Please respond to nv-l
|
To:
"'nv-l AT lists.us.ibm DOT com'"
<nv-l AT lists.us.ibm DOT com>
cc:
Subject:
RE: [nv-l] seed file |
Another important item is to use only one name in DNS
for each router. All the interfaces on that device should resolve
to the same name. The name should resolve to the loopback address
for the router.
This gives you the best functioning of NetView although
there is a continuing argument from many who want a unique DNS name for
each interface for other reasons. I find the device name qualified
by the interface name (e.g. Router.Serial1/0) gives the uniqueness I need
for interfaces. When necessary I override the DNS with a local hosts file
to achieve this. In my present situation the DNS has only the loopback
address and I use hosts to resolve the other names.
Bill Evans
-----Original Message-----
From: Paul [mailto:pstroud AT bellsouth DOT net]
Sent: Monday, March 08, 2004 2:05 PM
To: nv-l AT lists.us.ibm DOT com
Subject: Re: [nv-l] seed file
Chris,
Only use one IP for each device, you are causing netmon to do a lot of
additional and unecessary cycles. Let me explain:
netmon reads the entries from the seedfile, pings the node,
if it
responds, it is added to the database and an SNMP poll in scheduled.
When the device is polled via SNMP all the interfaces are discovered
and finally the full device is added to the map.
If you put multiple IPs in the seedfile for the same device
it will be
added and polled mutliple times, one for each ip in the seedfile. This
is uneccesary as netmon will already discover it via SNMP. That and
you might confuse things. Ie. netmon discovers on interface and adds it
and finds another interface and adds it before the first SNMP poll
is completed. Now it must delete one of the devices(as we know they
are on the same device) and fixup the correct device. This is all
uneccesary processing.
The best practice is to add a single interface from each
device.
Paul
Christopher J Petrina wrote:
>
> Greetings all,
>
> UNIX netview. Using a seefile forl imited discovery. In
the seedfile
> I have multiple entries (multiple IP's) for the same device, ie(every
> ip interface of a single router) is in the seedfile. When netview
> runs through the seedfile it finds the first IP of a device when it
> comes to the second IP of that device what does netview do. Each
IP
> interface also has an entryo in DNS as well. Does netview change
the
> name of the device if it finds another name. Also once it has
> initially found it, and then polls the device (SNMP) what name will
it
> chose for the device in netview, and why does it sometimes change
the
> name of the device.
>
>
> Chris Petrina
| 