Activity in Technology and Support
ACI Schedule Switch Firmware Update
Hello, we are currently in the process of upgrading our Leaf and Spine switches from 15.1(6e) to 15.2(63). I have already pre-downloaded the firmware onto the switches but cannot figure out how to schedule it. When in the update tab it just says begi...
Unlocking Universal ZTNA: The Next Step in Cisco Zero Trust Adoption
The Unlocking Universal ZTNA webinar series covers Zero Trust principles, Cisco ISE for workplace security, and Duo for workforce security, emphasising identity, segmentation, and compliance. It contrasts VPN and ZTNA, introduces Universal ZTNA com...
Simulation Software for Cisco Catalyst C9400
Hi All, I want to simulate the HA of C9400 using StackWise Virtual but I cant seem to find any software that I can use. I have GNS3 and CML. So the question, is C9400 can be simulated or not?
ACME cert enrollment on FP1120/w ASA fails due to APIPA address
vpn(config)# crypto ca enroll acme_cert % Start certificate enrollment .. % The subject name in the certificate will be: CN=acme_cert % The fully-qualified domain name in the certificate will be: acme_cert % Include the device serial number in the...
Cooling the AI with Warm Water
IntroductionImportance & ChallengeLiquid CoolingImmersion CoolingIs this the future of Data Centers ?Direct-to-Chip CoolingCisco’s INSANE Liquid-Cooled Switch.References The Portuguese version of this Article can be found at: Resfriando a IA com ...
VPN: Security Warning: Untrusted Server
My reserved sandbox was created successfully but when I try to VPN using AnyConnect from the Windows store, I get a certificate error (Untrusted Server). I turned off Block Untrusted Servers in the AnyConnect settings and I'm still unable to connect...
Catalyst 1300 landing to priviledged exec with tacacs aaa
it doesnt work although Tacacs sends priv15 correctly. aaa authorization exec is absentany idea how to overcome?
9800-80-WLC: Correct time format for command show logging profile
Hello Cisco WLAN experts,I'm struggling with the correct format for this command:WLC-9800#show logging profile wireless start timestamp "11/26/2025 14:00:00" filter mac 1234.3456.4567 to-file bootflash:logwin% Error: Invalid timestamp. Input must be ...
Catalyst Center without been start to Support Licensing DNA
I need to know if it is possible to download Catalyst Center without having started DNA license support. My licenses and support begin on December 27, as requested from the Cisco distributor, but I would like to start implementing it earlier. And wha...
Ethernet Bridging setting on MAP/RAP AP's!
We have a control system where I work that has a Cisco 5508 WLC, Cisco Air-Cap1552E Lightweight AP's, Cisco/GarretCom switches, Nexus Meters. Each building is linked together via Fiber, Copper or AP back to the main hub. The Meter's that are online...
Nexus9000 C93108TC-EX Rebooted by OS
Hello friends,I have a couple of Cisco Nexus 9000 C93108TC-EX chassis with the following software:BIOS: version 07.69NX-OS: version 9.3(13)Last night, one of the switches rebooted by itself, and I found the following log for the incident: Nexus2# s...
%SIF_ MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr
Hello Team,I have 2 Cisco C9300-48T in a stack running IOS 17.12.4. and connect to a pair of Core Switches in Etherchannel but was facing some weird situation, suddenly switch reporting LACP suspended. I removed the interface from etherchannel and ke...
Call delay (randomly) to outbound 833 number
hello - wanted to reach out to get an outside opinion on this. We are forwarding our internal transcription number (4 digit) out to a 833 XXX XXXX number. I had concerns that we had overlapping route patterns, as we are currently moving from PRIs t...
CISCO 3560 wit - Mainboard hardware authentication failed. Abort init
hi everyone! how are they?I tell you that today I apparently have a fatal error on my Cisco 3560. It tells me "Mainboard hardware authentication failed. Abort init..."but I don't understand how it happened. and i have 4 this equipments working To ...
Resolved! Unable to install IOS onto 3850
Hello, Recently I attempted to upgrade the IOS on some 3850 that I received. Somehow the process went wrong and started throwing Mainboard hardware authentication failed. Abort init ... Right after loading the kernel. Eventually using the emergenc...
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