Symmetra PX & Galaxy VM UPS delay in alarm detection and clearance on Data Center Expert

[Angwenyi]

Dear Team,

I am having an issue with 2 x Symmetra PX & 1 x Galaxy VM NMC with them showing alarms and clearing the same alarms on DCE, after the card detects the alarm it takes about 10mins or so to detect any alarm and also takes a long time for the alarm to clear after the card goes back to normal.

I have connected all data center devices on the DCE private network therefore no network restrictions as DCE is the DHCP server, on the same network there is a Galaxy 7000 UPS which promptly shows and clears it's alarm on DCE.

DCE is running on v8.1.0 while the Symmetra PX and Galaxy VM NMC firmware are running on v4.37.12 and v7.0.4 respectively. I have also set Global SNMP scan setting to 1min so this am sure doesn't cause the delay.

Will appreciate on any leads to have this resolved.

Thank you

Regards,

Felix

[Cory_McDonald · Accepted solution]

Hi @Angwenyi,

I recommend against setting the global scan interval so low, depending on the number of devices discovered into data center expert.  If the Global Scan interval was 5 and moved to 1, you now have 5 times the polling stress on the server which could affect performance.  I would recommend if needed adjusting the polling interval down by single device within the Device Menu > SNMP Device Communication Settings > Device Scan Settings.  You can check a single device and then edit the device scan setting and decrease or increase the polling interval for the single device.

When this issue is going on and you right-click and request device scan, is the server getting new data from the device?  You can see the last time the device was polled by right-clicking in Device View and selecting view device sensors.  You can also run a report to see when data points were last stored.

I also recommend getting an SNMPwalk from DCEs web interface when this issue is occurring, when it is not, and when DCE is seeing the alarm successfully, so that technical support would be able to see if the alarm is active in the SNMPwalk.  DCE will only see the alarm when the device reports it to its SNMP table and DCE polls that value via its device scan.

I recommend connecting with technical support about the issue as it could be performance related or environmental and they would be best to help troubleshoot that if you provide the above information.

Kind Regards,

Cory

[mosheshiper · Accepted solution]

Hello

I also had this problem and i change the global scan interval to 5 and not 1 and the problem solved

[Angwenyi]

Thank you Cory, let me check on this

[Angwenyi]

Interesting, will try this and update on the progress