Hello community,
Due to more arp inputs than the 200 that were configured, it had to be set to None. That you should pay attention to determine a margin.
SW1_K4_PISO_5# show ip arp inspection interfaces | i None
Gi1/0/44 Untrusted None N/A
Gi1/0/45 Untrusted None N/A
Gi1/0/46 Untrusted None N/A
Gi1/0/47 Trusted None N/A
Gi1/0/48 Untrusted None N/A
Gi1/0/49 Trusted None N/A
Gi1/0/50 Trusted None N/A
SW1_K4_PISO_5#
SW1_K4_PISO_5#sho arp summary
Total number of entries in the ARP table: 309.
Total number of Dynamic ARP entries: 308.
Total number of Incomplete ARP entries: 0.
Total number of Interface ARP entries: 1.
Total number of Static ARP entries: 0.
Total number of Alias ARP entries: 0.
Total number of Simple Application ARP entries: 0.
Total number of Application Alias ARP entries: 0.
Total number of Application Timer ARP entries: 0.
Interface Entry Count
Vlan999 309
SW1_K4_PISO_5#
Sep 21 10:25:54: %SW_DAI-4-DHCP_SNOOPING_DENY: 2 Invalid ARPs (Req) on Gi1/0/44, vlan 245.([0042.387f.343d/10.20.0.15/0000.0000.0000/10.20.0.1/10:25:54 Chile-D Tue Sep 21 2021])
Sep 21 10:25:55: %SW_DAI-4-DHCP_SNOOPING_DENY: 2 Invalid ARPs (Req) on Gi1/0/44, vlan 245.([0042.387f.343d/10.20.0.15/0000.0000.0000/10.20.0.1/10:25:55 Chile-D Tue Sep 21 2021])
Sep 21 10:25:56: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on Gi1/0/44, vlan 245.([0042.387f.343d/10.20.0.15/0000.0000.0000/10.20.0.1/10:25:56 Chile-D Tue Sep 21 2021])
Sep 21 10:26:07: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on Gi1/0/44, vlan 245.([0042.387f.343d/169.254.8.178/0000.0000.0000/169.254.8.178/10:26:07 Chile-D Tue Sep 21 2021])
In another switch there is no problem
--------------------------------------
Interface Trust State Rate (pps) Burst Interval
--------------- ----------- ---------- --------------
Fa0/44 Untrusted 200 1
Fa0/45 Untrusted 200 1
Fa0/46 Untrusted 200 1
Fa0/47 Untrusted 200 1
Fa0/48 Untrusted 200 1
interface FastEthernet0/44
description *** Hacia AP ***
switchport trunk native vlan 999
switchport mode trunk
ip arp inspection limit rate 200
storm-control broadcast level 20.00
storm-control multicast level 20.00
storm-control action trap
end
SW5_48_K4_Piso2#show arp summary
Total number of entries in the ARP table: 6.
Total number of Dynamic ARP entries: 5.
Total number of Incomplete ARP entries: 0.
Total number of Interface ARP entries: 1.
Total number of Static ARP entries: 0.
Total number of Alias ARP entries: 0.
Total number of Simple Application ARP entries: 0.
Total number of Application Alias ARP entries: 0.
Total number of Application Timer ARP entries: 0.
Interface Entry Count
Vlan999 6
