BigIron RX Series Configuration Guide 99353-1001810-01Dynamic ARP inspection 35Displaying ARP inspection status and portsTo display the ARP inspection status for a VLAN and the trusted or untrusted ports in the VLAN,enter the following command.Syntax: show ip arp inspection [vlan <vlan_id>]The <vlan_id> variable specifies the ID of a configured VLAN.Displaying the ARP tableTo display the ARP table, enter the following command.BigIron RX#show arpTotal number of ARP entries: 10IP Address MAC Address Type Age Port Status1 20.20.20.39 0000.4623.ed91 Dhcp 3/3386 5/20 Valid2 20.20.20.40 0000.4623.ed8f Dhcp 3/3386 5/20 Valid3 20.20.20.41 0000.4623.ed8d Dhcp 6/3321 5/20 Valid4 20.20.20.42 0000.4623.ed8b Inspect 4 5/20 Valid5 20.20.20.43 0000.2698.7027 Inspect 4 5/20 Valid6 20.20.20.44 0000.4623.ed89 Inspect 63 5/20 Pending7 20.20.20.45 0000.4623.ed87 Inspect 182 5/20 Pending8 10.43.11.1 0004.80a0.4000 Dynamic 0 mgmt1 Valid9 10.43.11.45 0060.e040.a0c4 Dynamic 1 mgmt1 Valid10 60.60.60.209 00d0.09a0.bd84 Inspect 14 0/64 PendingThe command displays all ARP entries in the system.Syntax: show arpTABLE 158 show arp commandThis field... Displays....IP Address The IP address of the device.MAC Address The MAC address of the device.Age The ARP Age, which can be one of the following:• The number of minutes the entry has remained unused. If thisvalue reaches the ARP aging period of 10 minutes, the entry isremoved from the table.• The Inspect Pending entries are never removed from the ARP Tableand are displayed in seconds not minutes.• The Inspect Valid entries are displayed in minutes and after 10minutes of aging may be changed from Valid to Pending.• The DHCP age is in the form of x/y where x represents the ARP agein minutes and y represents the lease time remaining of the client.NOTE: Static entries do not age out.Port This field shows the port on which the entry was learned. .FastIron SuperX Switch#show ip arp inspection vlan 2IP ARP inspection VLAN 2: DisabledTrusted Ports : ethe 1/4Untrusted Ports : ethe 2/1 to 2/3 ethe 4/1 to 4/24 ethe 6/1 to 6/4 ethe 8/1 to8/4
