Kavi, In my experience, if this situation happens, you will probably get an alarm for the location, reporting connection lost to all network models. If you only have these 2 devices in the container, this is probably what you'll find.
Hope it helps! ______ Marcelo Zacchi Monitoring Specialist T +55 11 3550.2821 [email protected] -----Original Message----- From: Rob [mailto:[email protected]] Sent: Wednesday, August 22, 2012 8:34 PM To: spectrum Cc: spectrum Subject: Re: [spectrum] Root cause alarm Agreed... but he said he had: spectrum --> router --> switch So in theory if he had "spectrum-->router" resolved, why then did it look like an isolated set of models regarding Fault Iso? -Rob On 8/22/2012 11:56 AM, Stephen Warne wrote: > Kavi > > If you have two devices connected to each other but not to any other > devices, and Spectrum loses contact to both of them, they will both > (correctly) go into a supressed state. > > The reason for this is that Spectrum's fault isolation looks at the > condition of all the neighbours of a device it loses contact with to > determine whether that device is the root cause. In this instance > spectrum will see that that ALL (in this case one) devices connected > are down, this causes the device's alarm to be supressed as it can't > be the root cause as it is 'surrounded' by devices that are down. I > hope my hurried explanation makes sense :-) > > Regards > Steve. > > -----Original Message----- > From: kavi arasu [mailto:[email protected]] > Sent: 21 August 2012 19:15 > To: spectrum > Subject: [spectrum] Root cause alarm > > Hi, > > we had router connected to a switch, both are monitored in Spectrum. Actually > both the devices are down at same time due to power failure. > But we didn't get any alerts in spectrum for both the devices, when i checked > the events of the router it says alarm is suppressed due to upstream device > is down and when i checked in switch it says alarm is suppressed due to > upstream device is down. > > But actual connection is spectrum --> router --> switch. > > Actually, i should get alert on router and the switch alert should be > suppressed. > > Did any one came across this situation. how do we over come this. > > Regards, > Kavi > --- > To unsubscribe from spectrum, send email to [email protected] with the > body: unsubscribe spectrum [email protected] > > --- > To unsubscribe from spectrum, send email to [email protected] with the > body: unsubscribe spectrum [email protected] --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected] --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected]
