Arp Restricted Forwarding Configuration Example - HP 10500 Series Configuration Manual

[SwitchB] dhcp-snooping
[SwitchB] interface gigabitethernet 1/0/3
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping trust
[SwitchB-GigabitEthernet1/0/3] quit
# Enable ARP detection for VLAN 10.
[SwitchB] vlan 10
[SwitchB-vlan10] arp detection enable
# Configure the upstream port as a trusted port (a port is an untrusted port by default).
[SwitchB-vlan10] interface gigabitethernet 1/0/3
[SwitchB-GigabitEthernet1/0/3] arp detection trust
[SwitchB-GigabitEthernet1/0/3] quit
# Configure a static IP source guard binding entry on interface GigabitEthernet 1/0/2 for user
validity check.
[SwitchB] interface gigabitethernet 1/0/2
[SwitchB-GigabitEthernet1/0/2] ip source binding ip-address 10.1.1.6 mac-address
0001-0203-0607 vlan 10
[SwitchB-GigabitEthernet1/0/2] quit
# Enable ARP packet validity check by checking the MAC addresses and IP addresses of ARP
packets.
[SwitchB] arp detection validate dst-mac ip src-mac
After the configurations are completed, ARP packets received on interfaces GigabitEthernet
1/0/1 and GigabitEthernet 1/0/2, have their MAC and IP addresses checked first, and then are
checked against the static IP source guard binding entries and finally DHCP snooping entries.

ARP restricted forwarding configuration example

Network requirements
As shown in
Configure DHCP snooping and enable ARP detection in VLAN 10 on Switch B.
•
Configure the DHCP server on Switch A.
•
Configure port isolation on Switch B to isolate the two hosts at Layer 2.
•
• Enable ARP restricted forwarding in VLAN 10.
Figure 102,
262