R0106-HP MSR Router Series Security Configuration Guide(V7)

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• To delete a 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 scanning and fixed ARP:
Ste
p
Command
1. Enter system view.
system-view
2. Enter interface view.
interface interface-type interface-number
3. Enable ARP scanning.
arp scan [ start-ip-address to end-ip-address ]
4. Return to system view.
quit
5. Enable fixed ARP.
arp fixup
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.
NOTE:
• This feature is available on only the routers installed with Layer 2 switching modules.
• The term "switch" in this section refers to the router installed with Layer 2 switching modules.
Configuration guidelines
Follow these guidelines when you configure ARP gateway protection:
• 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 works with ARP detection and MFF, ARP gateway protection applies first.
Configuration procedure
To configure ARP gateway protection:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2 Ethernet interface
view.
interface interface-type
interface-number
N/A