Re: [nv-l] seedfile/discovery

["Alan E. Hennis" <Hennis_Alan_E@cat.com>]

Chris

A1;
The $ is just used as a hint after the device is discovered. To actually
get the device discovered add another entry without the $. Example

      10.1.1.10
      $10.1.1.10

Having interfaces resolve to different name is bad for NetView. NetView
will name the device for the first interface it discovers that has a
reverse DNS entry. This is why many people put the primary management
address in forward and reverse DNS and all the remaining addresses in
reverse only. For example on my Cisco routers I have a loopback in forward
and reverse and the remaining addresses in reverse only.


A2:
NetView will try to poll all the interfaces on a device and use the first
interface that is up. I think it does this because if you only poll one
interface (i.e. the one with the $) it might not be able to determine if
the router is up. The interface that you specify with the $ may still be
down and other interface could be up.

Thanks
Alan E. Hennis
Caterpillar Inc.
Systems+Process Division
309.494.3308
hennis_alan_e@cat.com


                                                                                
                                                 
                      "Christopher J                                            
                                                 
                      Petrina"                                                  
                                                 
                      <cjp8@meadwestvac                                         
                                                 
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                      03/10/2004 01:46    Subject:      [nv-l] 
seedfile/discovery                                                
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Caterpillar: Confidential Green                 Retain Until: 04/09/2004
                                                Retention Category:  G90 -
                                                General
                                                Matters/Administration





Hi all,

Time once again for a indepth yes or no answer

Q1:  When I place devices int he seedfile preceeded with $ ($10.1.1.10)
which is a router, when it does the config poll on the device and finds all
the other interfaces on the device, does it try to do a gethostbyname for
each interface it finds on that device?  Or does it understand that by
denoting the $ in front of the device, that any interfaces it finds it
should automatically know that they are related to that device and not
attempt to determine if those other interfaces have a dns entry.   (reason:
all devices and all interfaces are in the DNS so a single router could ahve
multiple names depending on which interface it decides to find first, and
the seedfile use to house all ip addresses from the DNS.)

Q2:  Now once the inital discovery is done when it demanpolls the object
for operational status (because it was noted with a $) will it always try
only by the interface that was in the seedfile, or will it attempt to add
all interfaces as objects in the database.

Thanks
Chris Petrina