Brocade BigIron RX Series Configuration Guide - Manual (Page 1165)

BigIron RX Series Configuration Guide 1087
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Dynamic ARP inspection
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Enabling trust on a port
The default trust setting for a port is untrusted. For ports that are connected to host ports, leave
their trust settings as untrusted.
To enable trust on a port, enter commands such as the following.
BigIron RX(config)#interface ethernet 1/4
BigIron RX(config-if-e10000-1/4)#arp inspection trust
The commands change the CLI to the interface configuration level of port 1/4 and set the trust
setting of port 1/4 to trusted.
Syntax: [no] arp inspection trust
Displaying ARP inspection status and ports
To 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 table
To display the ARP table, enter the following command.
BigIron RX#show arp
Total number of ARP entries: 10
IP Address MAC Address Type Age Port Status
1 20.20.20.39 0000.4623.ed91 Dhcp 3/3386 5/20 Valid
2 20.20.20.40 0000.4623.ed8f Dhcp 3/3386 5/20 Valid
3 20.20.20.41 0000.4623.ed8d Dhcp 6/3321 5/20 Valid
4 20.20.20.42 0000.4623.ed8b Inspect 4 5/20 Valid
5 20.20.20.43 0000.2698.7027 Inspect 4 5/20 Valid
6 20.20.20.44 0000.4623.ed89 Inspect 63 5/20 Pending
7 20.20.20.45 0000.4623.ed87 Inspect 182 5/20 Pending
8 10.43.11.1 0004.80a0.4000 Dynamic 0 mgmt1 Valid
9 10.43.11.45 0060.e040.a0c4 Dynamic 1 mgmt1 Valid
10 60.60.60.209 00d0.09a0.bd84 Inspect 14 0/64 Pending
The command displays all ARP entries in the system.
Syntax: show arp
BigIron RX#show ip arp inspection vlan 2
IP ARP inspection VLAN 2: Disabled
Trusted Ports : ethe 1/4
Untrusted Ports : ethe 2/1 to 2/3 ethe 4/1 to 4/24 ethe 6/1 to 6/4 ethe 8/1 to
8/4