Switching

I bought a Cisco Catalyst switch from a hamfest (amateur radio swap meet) and am trying to get it working.  I am a retired software engineer and am just looking to get this working.  I can connect to it through a serial conection and can run some ini...

We are troubleshooting a recurring issue between a Cisco Catalyst 9407R and a Palo Alto PA-3410, and would like to know if anyone has seen the same behaviour.Environment- Switch: Catalyst 9407R stackwise virtual, IOS-XE 17.18.3, supervisor/line card-...

Hi, So I've bought a second hand Cisco SG350-28, however I just found out on the switch the reset button is broken off the mainboard, I'm wondering if there's any way to get a replacement or if there might be some tips about DIY'ing it.

Hi Guys, I have a network consisting of a L3 3560, 2960's and HP 2650's in a loop. When connecting a new machine up it can take quite a while to get an IP address, I understand this is due to the switch port 'listening' for 30 or so seconds? Is it po...

Hey!Assume this scenario. Switch A and switch B are linked by a trunk encrypted with MACsec. According to Cisco security guide "RSPAN or ERSPAN does not capture encrypted packets at egress and decrypted packets at ingress for MACsec enabled interface...

i have a 3850 stack of 2 switches in my mdf.  i have another switch in my idf connected by fiber.  everything has been good for years.  i just added another 3850 switch into my stack in my mdf.  now i cant access by idf switch at all.  cant ping or p...

As Attachment snap showing the scenario, i need a suggestion to get (http/https/pop3/smtp) access for the network(192.168.0.9)  through the internet server(192.168.0.123) placed on the other side of my router(LDC_Sharaf Router). Basic routing is enab...

Title: C9200L 10G SR uplinks flap on stack member V05 (17.3.5 after downgrade from 17.18.03); same fiber/SFPs work on V02 member Environment- Two-member C9200L-48P-4X stack (StackWise-80, C9200L-STACK adapters), install mode. Member 1 = VID V05 (2025...

Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from Monday, February 2, 2026, through Friday, February 20, 2026. Our colleagues Amruta Navadagi, Anaya Kalawat, and Mohammad Mehtabuddin will be waiting to assist you...

I would appreciate any help with this.I am trying to find the last image pushed by cisco. I know this is an extremely old piece of equipment, but I have it and would like to use it for a home lab. The most recent post on here says the file name would...

What's new? Cloud-Managed Fabric now deploys in more places with less manual work, keeps existing Layer 2 access resilient as you migrate, and fits a wider range of site architectures.   This release removes the most common blockers to adopting EVPN-...

Hi there, we have a new customer, who accidentally purchased these switches: C9200CX-8UXG-2XH-E He want to use these switches not in a DC environment (that is why these switches exist), but ina normal AC 230 VAC environment. I checked the datasheet a...

Hello, Due to an emergency, and until the appropriate transceivers arrive, I need to install SFP-10G-SR transceivers in a Meraki MS225-24P. Are they compatible?Thanks