Hi All,I have set up a lab so I can practice setting CoS marking and inspect packets so I can see how it all works. I am not sure if it is packet tracer or if I have done something wrong. When I try to create a class-map, the only protocols I have av...

When I ping a remote address from Subnet A, ARP behaves as it should and broadcasts across the switched network until it hits the device with the address, etc. But if I ping the same remote IP from Subnet B, the ARP packet is sent to the access switc...

Hi All, DTP has flagged up as a vulnerability in our network but the ports are bundled in etherchannel. I apply switchport nonegotiate to the Port Channel and the command is accepted. However, when I try to apply it to the interfaces, it breaks the l...