I wanted to share with everyone some of the problems we¹ve had with Spectrum that we¹re currently working with CA in the hopes that knowing about them will help out others. I don¹t know if they are specific to 9.2 H03, but I do know that they all exist on this version.
* SRM missing alarms. The SRM alarm table is missing alarms that the SRM event and outage tables say should be there. We originally found this when going through the outages table and trying to match up outages to alarms so we could get their trouble ticket IDs. As we¹ve continued to work this, we¹ve been able to craft a query that matches the number of 0x10701 events (³Alarm will be generated²) with the number of alarms actually in SRM for the same time period. If anyone would like to check the consistency of their SRM databases, contact me directly for the query. CA has accepted this as an issue and is working to determine a cause. * Condition correlation engine does not resuppress. This one takes a bit of explaining, so please bear with me. Suppose you have a simple network like this: >> SS --- A --- B > If B goes down, you will get several alarms, including ³blade status unknown², > ³chassis down², and ³device not responding to polls². In our environment, we > have a condition correlation that will use ³device not responding² to suppress > the other two, so the operators see one root cause, and two hidden symptoms. > Now if A goes down, it will suppress B. Specifically, the ³device not > responding² alarm on B is cleared and immediately replaced with an ³all device > connections are unreachable² alarm. The problem is that, with the original > ³device not responding² alarm on B now cleared, there is nothing to suppress > the ³blade status unknown² and ³chassis down² alarms, which now display to the > operators. Logically, the alarm on A that is suppressing B should also be used > to resuppress all the alarms on B, but this doesn¹t happen. CA has accepted > this as an issue, and created a patch that we¹re currently testing. * Notifier duplicating or not sending alarms. We¹ve received two different patches for Notifier one was for it occasionally acting on an alarm twice (about 1.5% of alarms), and the other was for it not acting on an alarm at all (about 0.1% of alarms). These patches were merged together into D89a. These are the ones that I think will be of wide interest. When I have substantial updates to share with the group, I will definitely do so. If you¹re seeing other strange behaviors, or have any questions about these, please contact me to discuss. I think that an open flow of information about these sorts of issues benefits us all. Jim -- JIM PFLEGER | Application Architect | Insight | insight.com t. 480.889.9680 f. 480.889.9599 [email protected] --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected]
