About Ethan Grinnell

Ethan Grinnell · 12-25-2022

After upgrading our 9800 WLC to 17.9.2, Prime has started indicating that the Coral connection is down. It was fine in 17.6.x. Prime is 3.10.2 with all of the latest patches. As far as I have been able to determine the actual telemetry stream is fine...

Ethan Grinnell · 10-17-2022

I've noticed that Prime doesn't seem to know when an AP connected to a 9800 WLC disconnects and reconnects. If the AP stays offline for a long time (Several hours) Prime eventually discovers this, and generates an alarm. As if there is a background j...

Ethan Grinnell · 03-01-2018

Howdy, I wanted to share an interesting issue with 2802 APs. I completed an upgrade to 8.3.140.0 and found that many of our 2802s did not return to operation. After a bit of tinkering and bouncing ports I found that the ones that were down were all...

Ethan Grinnell · 01-20-2016

Hello, We are deploying 6880-X switches with stacks of 6800IAs attached on FEXs. We've found that the stacking snmp MIBs that we use to monitor our stacks of 3750 switches are not supported on the 6880s for the 6800IA switches. The 3750s use the CIS...

Ethan Grinnell · 10-13-2015

Hello, I'm curious if anyone has suggestions as to how I can enable active monitoring of stacks of 3750 switches in Prime Infrastructure 3.0 so that it will generate an alarm if a stack member fails to boot. We recently had a power outage that caused...

Ethan Grinnell · 07-11-2023

3.10.4 was released last week. I confirmed that it fixes the issue. They changed to the new VRF aware syntax: show telemetry internal protocol cntp-tcp manager PrimeInfrastructure_IP 20830 source-vrf 0 WLC_MGMT_IP

Ethan Grinnell · 06-09-2023

This will probably be the fix:https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwc30033TAC says: "There is not workaround (as of now), however, it will be fixed in 3.10.4. ETA for that version has been changing, it is expected to be released late June...

Ethan Grinnell · 02-24-2023

We're pretty much saying the same thing.Though, it doesn't matter how strong the SFP+ host's power supply is, it could run on a nuclear power plant. Per the standard, the VCC pins on the SFP+ port are limited to the absolute maximum of 660mA sustaine...

Ethan Grinnell · 02-24-2023

Still investigating internally

Ethan Grinnell · 02-18-2023

I was curious if this is even possible with the SFP+ specification. It's not, not even close.I believe that the most recent specification can be found here: https://www.snia.org/technology-communities/sff/specifications?combine=8431 or directly downl...

Member Since	‎08-30-2013 01:55 PM
Date Last Visited	‎07-12-2023 12:04 AM
Posts	83
Total Helpful Votes Received	88

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User Activity

Prime 3.10.2 Coral to 9800 WLC version 17.8/9/10.x reports down

Prime 3.10 with 9800 WLC - No reaction to bsnAPDisassociated SNMP trap

AIR-AP2802I-B-K9 AP offline following upgrade to 8.3.140.0 on <1G interface

6880-x and 6800IA snmp monitoring of down switch stacks

Prime Infrastructure 3.0 and monitoring for c3750 Stackwise member boot failure

Re: Prime 3.10.2 Coral to 9800 WLC version 17.8/9/10.x reports down

Re: Prime 3.10.2 Coral to 9800 WLC version 17.8/9/10.x reports down

Re: PoE Gig-E RJ45 SFP (mini-gbic)

Re: Prime 3.10.2 Coral to 9800 WLC version 17.8/9/10.x reports down

Re: PoE Gig-E RJ45 SFP (mini-gbic)