On 10/13/04 at 2:47 PM -0700, Doug Weathers wrote the following
message
about "Re: [IM-Talk] Reference Point not
working:"
Networks that are directly attached to the reference device do not get
shadowed. (Is this a bug?) Devices connected to these networks
therefore also don't get shadowed. This means that you'll get alerts
from every device directly connected to your main switch, which is
probably a fairly long list :) Shadowing works from devices that are
NOT the reference device, so the devices further downstream get
correctly shadowed.
One workaround is to not use your main switch as the reference point.
Pick a device upstream from there to be your reference device. You
could actually put your IM server on the map, hide all of the networks
connected to it, mark it as the reference device, and drag a manual link
to the main switch by holding down the E key while you drag. IM just
follows the links on the map to determine shadowing, including the
manually created links, so this should work as desired.
Hope this helps,
Doug
Thanks Doug,
I had an IM server monitoring device on another map and was
wondering why! If the server goes down it could never report itself as
down but your idea is great. I have copied the IM server device to
these remote site maps, manually linked it to the main switch and as
an external reference point it works!
Perhaps the Reference Point documentation should be updated to be
more clear or else it is a bug that it's not working.
How Dependencies Work
When InterMapper detects a device is down, it follows the links starting at the reference point to determine if that device is reachable. If the only path is through a device, link, or interface that's down, then InterMapper declares that device is shadowed, and suppresses the notifications. If there is no failure, or if there is no path at all (functional or not) to the device, InterMapper passes the notification through.
If the reference point is down then all notifications go through
so don't use a reference point on the same network!
Thanks,
--
,-----/----.
| O | O | Rich Battin
| / | Apple Certified Technician
| (__ | Academy School District 20
| \___|__/ | http://www.d20.co.edu
'-----\----'
