Displaying And Maintaining Arp Detection; Arp Detection Configuration Example I - HP 4800G Series Configuration Manual

If both the ARP detection based on specified objects and the ARP detection based on snooping
entries/802.1X security entries/static IP-to-MAC bindings are enabled, the former one applies first,
and then the latter applies.
Before enabling ARP detection based on DHCP snooping entries, make sure that DHCP snooping
is enabled.
Before enabling ARP detection based on 802.1X security entries, make sure that 802.1X is
enabled and the 802.1X clients are configured to upload IP addresses.

Displaying and Maintaining ARP Detection

To do...
Display the VLANs enabled
with ARP detection
Display the ARP detection
statistics
Clear the ARP detection
statistics

ARP Detection Configuration Example I

Network requirements
Configure Switch A as a DHCP server and enable DHCP snooping on Switch B. Enable ARP
detection for VLAN 10 to allow only packets from valid clients to pass.
Configure Host A and Host B as DHCP clients.
Figure 1-1 Network diagram for ARP detection configuration
DHCP server
Switch A
DHCP snooping
Switch B
GE1/0/2
DHCP client
Host A
Use the command...
display arp detection
display arp detection statistics [ interface
interface-type interface-number ]
reset arp detection statistics [ interface
interface-type interface-number ]
Vlan-int10
10.1.1.1/24
VLAN10
GE1/0/1
GE1/0/3
DHCP client
Host B
1-9
Remarks
Available in any view
Available in any view
Available in user view