Displaying And Maintaining Arp Detection - H3C S5120-EI Series Operation Manual

ip: Checks both the source and destination IP addresses in an ARP packet. The all-zero, all-one or
multicast IP addresses are considered invalid and the corresponding packets are discarded. With
this object specified, the source and destination IP addresses of ARP replies, and the source IP
address of ARP requests are checked.
Before performing the following configuration, make sure you have configured the arp detection
enable command.
Follow these steps to configure ARP detection based on specified objects:
To do...
Enter system view
Specify objects for ARP detection

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
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
Use the command...
system-view
arp detection validate { dst-mac
| ip | src-mac } *
Use the command...
display arp detection
display arp detection statistics [ interface
interface-type interface-number ]
reset arp detection statistics [ interface
interface-type interface-number ]
1-9
Remarks
—
Required
Not specified by default.
Remarks
Available in any view
Available in any view
Available in user view