Cisco Packet tracer

Después de la reciente actualización de Cisco, descargar e instalar la herramienta cisco packet tracer se complico un poco aquí te muestro paso a paso como descargarla y comenzarla a utilizar. https://www.youtube.com/watch?v=AdQ-aFrbYis&ab_channel=Ja...

Wireless query related to TEAP for Entra Device and Entra User

I am looking for some documentation to configure TEAP for Entra Joined Device and Entra Joined User when user will be using Wireless. Assume that there is no Wired Connection and user will be using TEAP using Wireless. Then user booted the machine ho...

ACI: APIC GUI からポリシーのクローンができない

2026年1月24日 (初版) TAC SR Collection主な問題 APIC GUI からポリシーのクローンを行う際、ポリシー名を入力後、 Submit ボタンが反応しません。 原因 ソフトウェア不具合 CSCwn17367 に該当している可能性があります。 解決策 回避策はありません。恒久対策としては CSCwn17367 の修正済みバージョンへアップグレードしてください。 備考本不具合は、Bug Search Tool でも確認できます。各製品の TAC SR Collect...

ACI: vPC ポートが down (initializing) 状態でスタックする

2026年1月24日 (初版) TAC SR Collection主な問題 以下の条件に該当する時、 vPC ポートが down (initializing) 状態でスタックすることがあります。1. スイッチが再起動される2. Port Tracking が有効3. Number of fabric ports that triggers port tracking が 0 に設定されている #show interface Ethernet1/9Ethernet1/9 is down (i...

Cybercapsule: TrustSec

This video will provide a comprehensive TrustSec overview, explaining what it is and why it's so vital in today's complex network environments. Second, we'll dive into the TrustSec fundamentals, breaking down its core components and how they work tog...

IOS-XE: SSH アクセス時にエラーメッセージが出力される

2026年1月22日 (初版) TAC SR Collection主な問題 ルータ機器などに SSH アクセスした際に、%SSH-5-SSH_COMPLIANCE_VIOLATION_HOSTK_ALGO エラーが出力される。 出力例: %SSH-5-SSH_COMPLIANCE_VIOLATION_HOSTK_ALGO: SSH Host-key Algorithm compliance violation detected.Kindly note that weaker Host-key A...

eXR: NCS540/NC55-RP2-E/NCS-55A1 PTP/SyncE がクロックに同期しない

2026年1月23日 (初版) TAC SR Collection主な問題 eXR で動作する以下のルータにおいて、タイミング IC に問題が発生した場合にエラーが通知されず、PTP、SyncE の同期状態に問題が発生します。   対象製品(PID) NC55-RP2-EN540X-ACC-SYSN540-ACC-SYSN540-24Z8Q2C-SYSN540-24Z8Q2C-MNCS-55A1-36H-SNCS-55A1-36H-SE-S     エラー発生時は Perfor...

C9120 Rx Stuck using 17.12.5

Since we upgraded to 17.12.5 on our 9800 I see these logs from 9120 APs:...Rx stuck detected,doing phy forcecal for radio 1Has anyone else noticed this or know what they mean? It doesn't sound good.

Cat9k 17.15.04 VOIP Issues

Reporting a bug: My team and I have discovered a bug associated with cat9k_iosxe.17.15.04.SPA.bin. We began testing the version to roll-out as it is now the gold star, and found that when a Cisco VOIP phone (any model really, we tested conference pho...

TEst

Switch Catalyst 2960-S

Hey,I am working on a class project on a switch, but the switch doesn't have an iso file to read to boot, which makes it unusable. I tried downloading it from a USB drive, and it was saying there was an error to boot (discovered later that the USB dr...

AI Automation / Devops

Made a post in the wrong forum. Hopefully this is the correct one. Does anyone here have any experience with AI automation tools? We have been looking closely at tools like Cisco AI Canvas, and other 3rd party tools like mploi.ai and was curious if a...

AI Automation / DevOps

Does anyone here have any experience with AI automation tools? We have been looking closely at tools like Cisco AI Canvas, and other 3rd party tools like mploi.ai and was curious if anyone is using these tools to assist with troubleshooting or automa...

IPv6 Standards Uncovered: Inside the RFCs​

Dive into the core IPv6 specifications and explore the standards that shape the protocol. Gain clarity on RFCs and understand how theory translates into real-world networks.​​