The switches will forward legitimate traffic and prevent ARP poisoning attacks, but interfere with connection rate filtering.

The switches can now prevent ARP poisoning attacks and do not interfere with legitimate communications.

The switches can prevent ARP poisoning attacks, but legitimate communications with VLAN 2 could also be disrupted.

The switches will not apply ARP protection due to interference from DHCP snooping, so the commands have no effect on current behavior.

Instance 1 = VLANs 4,6 Instance 2 = VLANs 5,7Switch 2 instance 1 priority = 0 Switch 2 instance 2 priority = 1Switch 3 instance 1 priority = 0 Switch 3 instance 2 priority = 1

Instance 1 = VLANs 4-5 Instance 2 = VLANs 6-7Switch 2 instance 1 priority = 0 Switch 2 instance 2 priority = 1Switch 3 instance 1 priority = 0 Switch 3 instance 2 priority = 1

Instance 1 = VLANs 4,6 Instance 2 = VLANs 5,7Switch 2 instance 1 priority = 0 Switch 2 instance 2 priority = 1Switch 3 instance 1 priority = 1 Switch 3 instance 2 priority = 0

Instance 1 = VLANs 4-5 Instance 2 = VLANs 6-7Switch 2 instance 1 priority = 0 Switch 2 instance 2 priority = 1Switch 3 instance 1 priority = 1 Switch 3 instance 2 priority = 0

a hardware issue, such as a broken cable

asymmetric routing introduced by a routing configuration error

an issue with queuing, caused by mismatched QoS settings

mismatched IP addresses on the VLAN for the link