I was tasked with configuring Dynamic Address Resolution Protocol (ARP) Inspection (DAI) for user VLANS.  As I was adding the VLANs and enabling DAI my switch suddenly reboot.  I was able to recover so I thought it must have been a fluke- so I tried ...

I have 8 3850 Cisco Switches that have a vulnerability that need to be fixed.  The vulnerability is ICMP Timestamp Request Remote Date Disclosure.  Essentially what I need to do is filter out the ICMP timestamp requests (13), and the outgoing ICMP ti...

I have 8 Cisco 3850s that I need to change the default VLAN 1 (where the IP and mgmt reside) to another VLAN.  I did this on a dummy switch and as soon as I delete VLAN 1 IP info I lost all connectivity.  My question is if I create another VLAN and m...

I have a less then a dozen Cisco 3850 switches that I am working on.  I need to configure 802.1x authentication.  The issue is the switches are reaching out to Cisco ACS and I need to set up radius server to enable 802.1x.  The Cisco ACS I found out ...