Displaying And Debugging Arp; Arp Configuration Examples - H3C S5600 Series Operation Manual

To do...
Enable the master switch of a
VRRP backup group to send
gratuitous ARP packets
periodically
Enter VLAN interface view
Enable the VLAN interface to send
gratuitous ARP packets
periodically
The sending of gratuitous ARP packets is enabled as long as an S5600 switch operates. No command
is needed for enabling this function. That is, the device sends gratuitous ARP packets whenever a
VLAN interface is enabled (such as when a link is enabled or an IP address is configured for the VLAN
interface) or whenever the IP address of a VLAN interface is changed.

Displaying and Debugging ARP

To do...
Display specific ARP mapping
table entries
Display the ARP mapping entries
related to a specified string in a
specified way
Display the number of the ARP
entries of a specified type
Display the statistics about the
untrusted ARP packets dropped by
the specified port
Display the setting of the ARP
aging timer
Clear specific ARP entries

ARP Configuration Examples

Network requirements
Disable ARP entry check on the switch.
Disable VLAN-interface 1 of the switch from sending gratuitous ARP packets periodically.
Set the aging time for dynamic ARP entries to 10 minutes.
Use the command...
arp send-gratuitous enable vrrp
interface Vlan-interface vlan-id
gratuitous-arp period-resending
enable
Use the command...
display arp [ static | dynamic |
ip-address ]
display arp [ dynamic | static ] |
{ begin | include | exclude }
regular-expression
display arp count [ [ dynamic |
static ] [ | { begin | include |
exclude } regular-expression ] |
ip-address ]
display arp detection statistics
interface interface-type
interface-number
display arp timer aging
reset arp [ dynamic | static |
interface interface-type
interface-number ]
1-6
Remarks
Optional
Enabled by default.
—
Optional
Enabled by default.
Remarks
Available in any view
Available in user view