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...
Hi ,We have SGT capable devices such as Meraki MR , Meraki MX , and Access switches. However , our core ( Arista ) is not SGT capable ( haven't tested but doesn't look capable ).I have read some blogs and articles about SXP but I'm fairly new to all ...
I have a C9500-48Y4C IOS XE 17.12.4 that is notifying of a lot of MAC flapping. This is the typical error log. Oct 27 13:14:41.253: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56b1.96a0 in vlan 412 is flapping between port Twe1/0/3 and port Po1When the switc...
We are having a very difficult time with our Cisco C9200L-48P-4X and C9300L-48P-4X switches after converting them to be managed through the Meraki Dashboard.Initially, everything works fine, but after some time we start experiencing a number of issue...
PXE boot (WDS) stopped working after we upgraded MS switches to 18.1.9.The PXE client downloads the NBP, then hangs at "Contacting server" (0x102).- Same PXE failure on 3 different MS210 stacks in 3 different networks, all on 18.1.9.- Downgrading one...
We have remote office with 5 MS130-48PSW01 which we can call the "core" Layer 2 only has crashed 3 times over the last two weeks, where it reports offline in the dashboard and stops passing traffic.To bring the network back up we have to pull the po...
Hi,I performed an ISSU upgrade on the Catalyst 9500-40X switches from IOS-XE 17.15.6 to 17.18.4. During the upgrade, I observed traffic interruption and ping drops for approximately 15–20 seconds, despite NSF and SSO being enabled.Is this expected be...
Hey!Cisco Catalyst 9300 L2 guide explicitly states that the command ptp mode:"Specifies the synchronization clock mode: - boundary: to enable the switch to participate in selecting the best master clock. If no better clocks are detected, the switch b...
i have essential license of cisco 9500L switch but i am unable to create stack wise virtual to create stack wise virtual i enable #license boot level network-advantage addon DNA-advantage command, now stack wise virtual is working but could be pleas ...
I have a stack of 4 C9200L-48P-4X switches running 17.09.05 cat9_lite_iosxe which I cant upgrade.I tried copying the 17.18.04 to flash: but cant install due to insufficient memory.Now I put a usb drive in the switch and ran: install add file ...activ...
Dear everyone,I have issue with nexus switch 93180yc-fx3 high speed 100%, it running firmware NX OS with 10.6.2F version.Anyone have issue same to me, and how to fix this issue?Thank you so much.
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.
Hey!The Cisco guideline "Troubleshoot MACsec on Catalyst 9000" recommends to increase the system MTU to accomodate for extra 32 bytes due to MACsec. However, on Catalyst 9300 I do not see any packet being drppped when using max packet size (macsec e...
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...
