Hi Sean, can you please explain a little bit what you have found, and did you find a solution to resolve this. Because we have the same problem. For my opinion it seems that older devices have the problem more then newer devices. I think it is a problem from the cpu resource of older devices.
Best Regards Berthold -----Ursprüngliche Nachricht----- Von: Sean Carnes [mailto:[email protected]] Gesendet: Donnerstag, 24. Februar 2011 15:08 An: spectrum Betreff: Re: [spectrum] Sensitivity to agent lost events Kenneth, We had some issues with explaining exactly what Spectrum was doing to determine that the device stopped responding to polls. The approach we took to determine the behavior, other than what is in the manual, was to run a packet sniffer and filter for traffic to/from the device/devices in question. It was quite educational and a little bit different than we expected. Regards, Sean Sean Carnes Cablevision Systems Corp. Network Management Systems & Metrics 172*85*77/5167902323/5163905910 >>> Kenneth Kirchner <[email protected]> 2/24/2011 1:43 AM >>> Does anyone have any advice on how to make Spectrum less sensitive to "Management Agent Lost" events? We see lots of events where Spectrum says the agent is lost, but comes up less than 3 minutes later (poll interval is 300 seconds, so I am not sure how it even knows). If we manually poll as soon as we get the alarm, 99% of the time it is successful. I have raised the DCM Retry Count to 3, but that does not appear to have helped. We have all kinds of WAN links (ATM, T1, etc) and the latency/reliability issues that go with them, so I cant say the network is not at fault, but I wish I had more information about what Spectrum tried and when it tried it. As soon as we get the Major alarm, we get a ticket in our ticketing system, so this is creating a bit of extra work for a problem that has resolved itself before the ticket even gets assigned. -K --- 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] -------------------------------------------------------- The information transmitted in this email and any of its attachments is intended only for the person or entity to which it is addressed and may contain information concerning Cablevision and/or its affiliates and subsidiaries that is proprietary, privileged, confidential and/or subject to copyright. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient(s) is prohibited and may be unlawful. If you received this in error, please contact the sender immediately and delete and destroy the communication and all of the attachments you have received and all copies thereof. -------------------------------------------------------- --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected]
