Tag: error
Cisco Catalyst 2960X keeps crashing
Yesterday evening I had to troubleshoot a Cisco Catalyst 2960X switch stack, which didn’t return to normal after a reboot. The following error message was visible on the console: Error: ASIC/PHY POST failed. Cannot continue. %Software-forced reload This error message is listed as a bug (CSCut90593) at Cisco.com. Cisco describes a very “good” workaround: the switch … Read More
ClearPass & MobileIron – Error: not well-formed (invalid token)
This post isn’t going to describe what HPE Aruba ClearPass or MobileIron is. And neither will it describe the configuration steps necessary to add MobileIron to ClearPass, but I will give a short summary: Add the MobileIron VSP to ClearPass as Endpoint Context Server (CPPM – Administration – External Servers); The account on MobileIron needs … Read More
Cisco ASA: web interface not working
I had to troubleshoot a Cisco ASA today, where the client wasn’t able to connect to the management web interface anymore via https. The customer didn’t install ASDM locally, but always starts the Java-based version. After upgrading the Cisco ASA to software version 8.2(1) and a reboot, the client wasn’t able to connect to the … Read More
AutoQos error while generating commands
First of all, the post isn’t about explaining QoS. Configuring AutoQos on Cisco switches should be very easy. At least, that is what all the Cisco documentation tells you. I always thought that the statements about configuration AutoQos were true, but a few days ago I would disagree. I was configuring multiple switches, Cisco Catalyst … Read More
Configuration Example, IPSec / SSL VPN
Citrix NetScaler: Protocol Driver Error
Today I have been troubleshooting a Citrix NetScaler configuration, where some clients received the Protocol Driver Error message when executing a published application. This error message is mostly related to a wrong configuration of the Security Ticket Authorities (STA’s). I spent a lot of time troubleshooting this issue and focused on the STA configuration. I … Read More
RDP and Spooler system service
My colleagues and I configure a Windows server from time-to-time. Mostly when we configure a server, it is a server which is placed in the DMZ zone, like an ISA Reverse Proxy or Citrix Secure Gateway. Recently I spoke with a colleague and we started discussing the running services under Windows. After installing a Windows … Read More