Switching

I have four C9300-48P stacked switches; whenever the switch reboots, it's not loading from the startup-config. All the time, I have to do #copy startup-config running-config. And it's not showing the config register value when I enter the #sh version...

Hello all,In terms of doing IOS-XE software upgrades, there are 2 ways to do it - the install mode way, or the request platform way. @Leo Laohoo has written some great guides for upgrading ISR models with request platform and upgrading Cat 9k models ...

I have a client who is considering configuring StackWise Virtual (SWV) on his Catalyst 9410 ACCESS LAYER switches. The switches have DUAL SUP modules in them and they are L2-ONLY... VLANs, STP, DOT1Q trunk, QoS for VoIP, etc... no routing, no VRFs, e...

Hello!I have a Catalyst 9410 chassis in the ACCESS LAYER - L2 ONLY - with DUAL SUPs. BUT, I only have the DNA Essentials and the Network Essentials licenses, NOT the Advantage license, so that means I do not have some HA functionality like NSF or ISS...

Hello all, Can we have portfast enabled in a vPC port that is facing a server or is it better to enable edge trunk on that port ? Thanks for your feedback.

Hi, I know PIM Sparse Mode is always meant to have a RP - but does anyone have experience of a single L3 switch and multicast forwarding where a PIM-RP does not exist? I have a L3 switch that has multiple VLAN's and I am trying to confirm if a PIM RP...

Hi Team,I am encountering an issue with the storm-control configuration on our WS-C3560V2-24PS-S switches. The ports are repeatedly going into an err-disabled state due to storm-control on specific PCs.Could anyone provide insights into the possible ...

hi, we are planning the layer2 connection between HQ and branch offices. Is MacSec a good option to protect the data? If want to use Macsec, what should we do?  can anyone please advise, thanks in advance! 

Hi all;Based on Cisco's documents, when using "auto-source" keyword for Device Tracking probilng operation, the following sequence of events occur:The first preference is to set the source address to the SVI, if an SVI is configured.The second prefer...