About Arne Bier

Arne Bier · 04-07-2026

The Catalyst Center restricted shell (maglev) doesn't allow the most basic operation to clear out the SSH known_hosts file with standard unix tools like ssh-keygen. In addition, as maglev user, the ~/.ssh/known_hosts file is not viewable or editable...

Arne Bier · 03-01-2026

Hi SNS users, Have any of you run the UCS CIMC Power Characterization when first configuring ISE SNS appliances CIMC? Is this something that should be done by the end customer, or does Cisco do this in factory prior to shipping the appliance? Below i...

Arne Bier · 10-29-2025

Hi, I am writing a jinja template to construct an IOS login banner. The banner has an outline using some character to make it look tidy. e.g. ++----------------------------------------------------------------------++ | ...

Arne Bier · 10-22-2025

Does anyone know what a valid use case is for unchecking this box? According to my experience, it tries to enforce RFC 5280. But in reality, unchecking this box can break 802.1X authentications. In particular, devices that are authenticating with 802...

Arne Bier · 07-30-2025

We provision all of our Catalysts with Cat Center and during provisioning, the devices receive the RADIUS/TACACS/NTP/SNMP etc that is configured in that part of the Network Design Hierarchy. Let's call this the 'base config'. But when I provision a C...

Arne Bier · 05-07-2026

I don't see any "aaa authentication" or "aaa authorization" or "aaa accounting" commands as part of your show run | sec radius - did you remove that from your screenshot?

Arne Bier · 05-07-2026

I would add the command to Catalysts that have RADIUS (for 802.1X/MAB) configured - the command is 100% correct aaa accounting update newinfo periodic 2880 You need to check the rest of your IOS Radius config to ensure you don't have any else weird g...

Arne Bier · 05-07-2026

Oh ok - then I have a slightly different Alarm. In my case I get the "Excessive Radius Accounting Interim-updates Attempts" alarm. I have a TAC case open for that and so far I think ISE 3.5 gets confused with the IOS device sending device-sensor data...

Arne Bier · 05-06-2026

@Xibachao1 - which ISE Operations / Report option did you use to get that screenshot ?

Arne Bier · 05-04-2026

I think Cisco has broken the code again. I am facing a related issue since upgrading to 3.5 patch 3. ISE 3.4 patch 6 and 3.5 patch 3 were released roughly the same time, and appear to share some similar code regarding RADIUS Alarms. In my case I am g...

Member Since	‎02-23-2017 06:57 PM
Date Last Visited	‎04-30-2026 01:43 PM
Posts	4,155
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Unable to edit Catalyst Center known_hosts file using ssh-keygen

SNS-38x5 Power Capping in the UCS CIMC

Catalyst Center jinja template - text padding question

ISE Accept certificates without validating purpose will break 802.1AR

Catalyst Center provisioning routers and base config

Re: Alarms: Excessive RADIUS Network Device Communication

Re: Alarms: Excessive RADIUS Network Device Communication

Re: Alarms: Excessive RADIUS Network Device Communication

Re: Alarms: Excessive RADIUS Network Device Communication

Re: Alarms: Excessive RADIUS Network Device Communication