Activity in Technology and Support
ISR 4331 Failure no lights no console no fans
I unplugged the ISR and when I plugged it back in and turned on the power nothing happened. No lights, no fans, and the device is unreachable over serial.
Domain clients behind Meraki AutoVPN can't do secure DNS dynamic upt
Quick honest note: I put this summary together with the help of an AI, because we ran a lot of advanced packet captures and low-level troubleshooting that's a bit beyond what I'd normally do on my own. So if some of the wording sounds very "clean", t...
Port-Channel don't come up after firmware upgrade on C1300-24FP-4G
Hello,I upgraded the firmware of my Cisco Catalyst 1300-24FP-4G switch from 4.0.0.91 to 4.1.9.85. Previously, on the old version, the port-channel was working fine with Cisco Catalyst 1300-24XS (version 4.1.3.36).Interfaces detail which were bundled ...
dot1x switch to MAB
I configure 2 radius on the switch and when 1st radius dead then the client will authenticate to 2nd radius but this request use MAB and not dot1x. In my mind maybe the switch have short dot1.x timer so the authentication will switch to MAB even radi...
AMA - 2026 IOS XE Software Security Hardening update
Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from Monday, August 17 , 2026 through Tuesday August 31, 2026. Our experts Saikat Nandy and Prashanth Bargur Hanumantharayappa will be waiting to assist you and resol...
Resolved! Testing local username
Hello,We have configured AAA authentication on our routers with RADIUS server authentication. As a backup option a local user and enable secret password has been configured.So far RADIUS server is working fine so there was case to test the locally c...
Cisco ACI handbook
Guys anyone has Cisco ACI workbook for labs free of cost or notes about it I understand it but I feel I want to do with simulators and practice to know better is there anyway to do anything about it!?
Resolved! ACI CIMC Upgrade
Hello,I would like to understand Cisco’s recommended procedure for upgrading the CIMC firmware on an APIC L4 cluster.Current setup:APIC model: L4APIC version: 6.0(8f)CIMC version: 4.3(4.241063)Cluster size: 3 APICsTarget versions:CIMC: 4.3(6.250053)A...
Cisco ACI Always Sanbox Offline or Unresponsive
Hi,The ACI always on Sandbox has gone offline again.Can I also ask about the reserveable ACI sandboxes as they appear to have offline for a while now. Are they undergoing maintenance or is there also an issue with them?Thanks,Cap
Duo Desktop - Startup times
Hello, We have noticed Duo Desktop takes a long time to load at Windows startup. Assuming this is because it loads in the user (startup) context, which is the lowest priority. If people launch their browsers before Duo Desktop loads, they have issues...
Always on APIC sandbox is unreachable
Reserved an access to ACI Simulator Always-On sandbox but its host status is unreachable.
Kirtland AFB 9841's "Inactive Load Failure Reason Internal Phone Error
Product Type: Cisco 9841Device Protocol: SIP Real-time Device Status Registration:Registered with Cisco Unified Communications ManagerIPv4 Address: Active Load ID:PHONEOS.3-4-1-0002-50Inactive Load ID:NoneDownload Status:FailedRequested Load ID:sip78...
Resolved! ACI L3Out towards routers R1 and R2 in VRRP
I have Cisco ACI topology consists of two spines and two leaves like in diagram above. We want to make an L3Out connection towards two routers R1 and R2 which use VRRP protocol. We plan to use a static routes between ACI fabric and routers R1 and R2....
Implementation of EEM During a Failure
We are using BGP on the WAN interfaces of R1 and R2.I would like to create an EEM that executes commands on R2 in the event of a WAN failure or a hardware failure on R1.I believe the best approach is to use IP-SLA on R1 to monitor ICMP traffic to the...
Resolved! Besoin de l'image Mobility Express pour AIR-AP3802I-E-K9
Bonjour,J'ai récupéré un point d'accès Cisco Aironet AIR-AP3802I-E-K9 d'occasion (pas acheté auprès d'un revendeur, aucun contrat de support associé à l'appareil). Il tourne actuellement en image CAPWAP (Cisco AP Software, ap3g3), confirmé via show i...
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