Activity in Technology and Support
OpenDNS not resolving - Cisco Umbrella
In the last few weeks we have issues with openDNS which does not resolve hosts, but other DNS do.At the moment it is e.g. frank-meisler.com. OpenDNS does not resolve, but EU-DNS, Cloudflare and Google-DNS do resolve it.Paying a lot of money for this ...
Clarification on "Unicast Routing" Option in ACI Bridge Domain
Hi Cisco Community,I’ve been reviewing the Official Cert Guide (OCG) for ACI and have some questions about the "Unicast Routing" option in Bridge Domains (BDs). Here’s what I’ve understood so far:When "Unicast Routing" is enabled on a BD, the default...
Red Teaming for AI Security
The image illustrates an AI system (represented as a brain within a shield) being attacked by various threats including Data Poisoning, Prompt Injection, Model attacks, Bias Exploitation, and Model Stealing. When you’re building som...
CIMC Upgrade from 2.x version to 4.x version
Hi All,We're trying to upgrade the CIMC of APIC from version 2.x to 4.x of UCS M4 200 Server but facing issue. We tried upgrading using both CLI & GUI but failed both way multiple times.Anyone has any idea about how to resolve this issue.Regards,Vikr...
User and Machine Authentication
Hello Am having troubles getting my WIFI to work with machine authentication and user authentication i keept trying to reauthenticate every time im not really sure why it doing it at the machine authentication part, but it get that correct. this is w...
Understanding FlexVPNs
Understanding FlexVPNs Introduction FlexVPN Components IKEv2 Keyring IKEv2 Profile IPSec Profile Virtual Template Tunnel Interface Conclusion Introduction We knew...
Unable to change password on vManage after attached template - 20.12.5
Hello community,So I ran into this problem where I have my default admin password and never changed it. On the GUI I always had a warning about using the default password. I tried to change it before but for some reason, I couldn't, so I just ignored...
How to use Time-Domain Reflectometer (TDR)
I’m no electrical engineer, (the closest experience I have with electricity is the amount of electrocution I received when I was a child [due to faulty cabling of electrical appliances]) so I will spare readers technical jargons and boring formulas b...
CISCO CBS110 Unmanaged 5-port for NAS storage connection
Good day,if possible I would like to ask for help with choosing switch. I want to connect two NAS storages, but have only one cable, so I want to buy a simple unmanaged switch for being able to connect them both.I found CISCO CBS110 5-port switch (CB...
video calls not working (cisco ip phones 8865) in cisco ISR 4431
Dear Team,video calls are not working on cisco cme (cisco isr 4431). we are using cisco 8865 phones and registered in cisco 4331 Voice gateway.Please do the needful
Catalyst9000: Details of Bug CSCwq03415
I would like to know more details about the following bug.https://bst.cisco.com/bugsearch/bug/CSCwq03415We are planning to upgrade to 17.12.5, which is the version that is affected by this bug.I would like to know if there is any information on the f...
Resolved! Cisco SDWAN - MPLS Transport
Hi Cisco Community, I'm trying to resolve what is happening on my home lab cisco sdwan.My MPLS Transport is saying "Operation state is DOWN" and true enough NO BFD sessions and TLOC being generated from this interface.My controllers can be reach from...
Cisco Secure Client - Downloader notification/Popup disable?
We have moved portions of our machines to CSC 5.1.5.65 which is the last update needed in order for auto-updates to work. The issue I am experiencing is that when CSC updates it pops up a notification window that does not go away until it finishes d...
Resolved! Cisco packet tracer help
I am new to PT and taking the online intro course.In the sector Video - Deploying Devices Example they connected home router to a webcam. I tried connecting mine on my PT but it keep getting connection error: The cable cannot be connected to this por...
is ACI vxlan within fabric using flood and learn approach?
Hi, can someone please advise whether vxlan within aci faric is using the approach " Flood & learn"? thanks in advance!
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