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...
A L3 interface on a c9500-32 (on 17.15.4) is configured with an incoming and an outgoing ACL, the latter also evaluating a reflexive ACL which runs up to some 500 entries. All works fine for a few days, then sessions like icmp or ssh to (apparently) ...
We have a stack of three Cisco IE switches with no other switches connected to the stack.There are two Palo Alto firewalls connected to the stack using LACP EtherChannels:FW1 is connected to SW1 and SW3 as an LACP Port-Channel.FW2 is connected to SW2...
Hello there!The Catalyst 9300 Security configuration guide (Cisco IOS XE Dublin 17.12.x) says:"Port ACLs are ACLs that are applied to Layer 2 interfaces on a switch.....Port ACLs can be applied to the interface in inbound and outbound direction." In ...
Hello Everyone,I am experiencing an issue with the Combo Port on a Cisco C1300-24XT.When I connect a FO cable to the SFP port (Port 21), I am unable to establish a connection to the peer switch. The port status LED is blinking on the UTP port (Port 2...
So I'm experiencing a challenge with 2 core switches in my environment. These are MS425 running the current firmware 17.2.2. The 2 are stacked and 1 of the switches experiences the reboots more often than the other. the CPU and memory are within the ...
Hi folks, I'm beating my head against the wall trying to see if this is doable. Here's the scenario I'm working with:End users want to be able to access production systems over VPN. I have Cisco ASA and Cisco L3 switches.I have two VLans built for t...
I am trying to connect 6 switches into a stack, 4 -4G models and 2 4X models. I am using the stack Kit2 for stacking. Are this compatible to stack or am I missing something? Thanks in advance, Vinny
Hi,Can anyone confirm please why MS 17.2.2 firmware displays a warning for July 17, 2026 even though it is the Latest Recommended MS firmware? Google suggests it is related to a FIPS certificate expiration but would like to be sure. Thanks.
Hello there!The Catalyst 9300 Security configuration guide (Cisco IOS XE Dublin 17.12.x) says:"Port ACLs are ACLs that are applied to Layer 2 interfaces on a switch.....Port ACLs can be applied to the interface in inbound and outbound direction." In ...
So IOS XE 17.18.2 is now listed as the latest stable release for Catalyst switches in the firmware upgrade portal on Meraki dashboard. What's odd is that the older 17.15.4.1 is listed as a stable release candidate. I'd love to understand if 17.18.2 i...
Hello guys,I got some weird case on my 9500 virtual stacks. I have multiple 9500-16X and they are in stackwise virtual as a pair. On 2 pairs of mine, DAD interfaces are showing down. Their IOS version is 17.12.04, is there any bug related with this s...
We have c9500-48yc switch on which we are using SFP-10G-T-X, a copper SFP. When I connect the switch to a pc then the interface is in "notconnected" state and not working, when I connect switches of same model using this copper SFP then everything is...
Hi, I have 4 VLANs - 10, 20, 30 and 40. VLANs 10 and 20 are VXLAN enabled with L3VNI. Communications works fine between them. VLANs 30 and 40 are for guest access and needs to be VXLAN enabled as well but need to be in different VRF since they cant h...
Hello everyone,I recently took over a maintenance project for a public-sector customer, and I was surprised by one of their requirements.The customer is requesting preventive maintenance that includes opening Cisco Nexus and Catalyst switches (1RU mo...
HII have been upgrading our Cisco 9500 SVL Switches and our 9300 stacks and have just found something online regarding CPLD/FPGA firmware upgrades, 1.Is this a manual upgrade or is it in the IOS upgrade procedure2. Can this cause issues if it isnt up...
