H3C Technologies H3C S3600 Series Switches - Manual (Page 599)

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z If the IP address of the virtual router corresponds to an actual MAC address, the source MAC
address in the gratuitous ARP packet will be the VLAN interface’s MAC address of the master
switch in the VRRP backup group.
For details about VRRP backup group. Refer to the part discussing VRRP in this manual for details.
Configuring ARP
Follow these steps to configure ARP basic functions:
To do… Use the command… Remarks
Enter system view system-view —
Add a static ARP entry
arp static ip-address
mac-address [ vlan-id
interface-type
interface-number ]
Optional
By default, the ARP mapping
table is empty, and entries are
created dynamically by ARP.
Configure the ARP aging timer arp timer aging aging-time
Optional
20 minutes by default.
Enable the ARP entry checking
function (that is, disable the
switch from learning ARP
entries with multicast MAC
addresses)
arp check enable
Optional
Enabled by default.
z Static ARP entries are valid as long as the Ethernet switch operates normally. But some operations,
such as removing a VLAN, or removing a port from a VLAN, will make the corresponding ARP
entries invalid and therefore removed automatically.
z As for the arp static command, the value of the vlan-id argument must be the ID of an existing
VLAN, and the port identified by the interface-type and interface-number arguments must belong to
the VLAN.
z Currently, static ARP entries cannot be configured on the ports of an aggregation group.
Configuring Gratuitous ARP
Follow these steps to configure gratuitous ARP:
To do… Use the command… Remarks
Enter system view system-view —