Configuration Procedure; Configuring Arp Gateway Protection; Configuration Guidelines - HP FlexFabric 5930 Series Security Configuration Manual

To delete a specific static ARP entry converted from a dynamic one, use the undo arp ip-address
•
[ vpn-instance-name ] command. Use the reset arp all command to delete all ARP entries or the
reset arp static command to delete all static ARP entries.

Configuration procedure

To configure ARP automatic scanning and fixed ARP:
Step
1. Enter system view.
2. Enter Layer 3 Ethernet interface/VLAN
interface/Layer 3 aggregate interface
view.
3. Enable ARP automatic scanning.
4. Return to system view.
5. Enable fixed ARP.

Configuring ARP gateway protection

Configure this feature on interfaces not connected with a gateway to prevent gateway spoofing attacks.
When such an interface receives an ARP packet, it checks whether the sender IP address in the packet is
consistent with that of any protected gateway. If yes, it discards the packet. If not, it handles the packet
correctly.

Configuration guidelines

When you configure ARP gateway protection, follow these guidelines:
• You can enable ARP gateway protection for a maximum of eight gateways on an interface.
Do not configure both the arp filter source and arp filter binding commands on an interface.
•
If ARP gateway protection operates with ARP detection, ARP gateway protection applies first.
•
Configuration procedure
To configure ARP gateway protection:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet interface
and Layer 2 aggregate interface
view.
Command
system-view
interface interface-type interface-number
arp scan [ start-ip-address to end-ip-address ]
quit
arp fixup
Command
system-view
interface interface-type
interface-number
164
Remarks
N/A
N/A.