Symptom
Trusted ports with Dynamic ARP Inspection (DAI) have a default rate limit of 15pps.
n1k# show system internal dhcp database interface config
Interface IPSG DHCP ARP ARP ARP DHCP
Enabled Trust Trust Pkt lmt Burst Intvl Pkt lmt
----------------------------------------------------------------------
Vethernet3 No No Yes 15 5 10000
n1k# show run int veth3
interface Vethernet3
ip arp inspection trust
Conditions
DAI is configured and the interface is trusted. There is no explicit rate-limit configuration.
Workaround
Manually configure it as unlimited (either under the port-profile or under the interface):
n1k(config-port-prof)# ip arp inspection limit none (or)
n1k(config-if)# ip arp inspection limit none
n1k# show system internal dhcp database interface config
Interface IPSG DHCP ARP ARP ARP DHCP
Enabled Trust Trust Pkt lmt Burst Intvl Pkt lmt
----------------------------------------------------------------------
Vethernet3 No No Yes 0 0 10000
