Configuring Arp; Configuring Gratuitous Arp - 3Com 5500-EI PWR Install Manual

Configuring ARP

Follow these steps to configure ARP basic functions:
To do...
Enter system view
Add a static ARP entry
Configure the ARP aging timer
Enable the ARP entry checking
function (that is, disable the
switch from learning ARP
entries with multicast MAC
addresses)
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.
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.
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...
Enter system view
Enable the gratuitous ARP
packet learning function
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
Use the command...
system-view
arp static ip-address
mac-address [ vlan-id
interface-type
interface-number ]
arp timer aging aging-time
arp check enable
Use the command...
system-view
gratuitous-arp-learning
enable
arp send-gratuitous enable
vrrp
interface Vlan-interface
vlan-id
gratuitous-arp
period-sending enable
1-5
Remarks
—
Optional
By default, the ARP mapping
table is empty, and entries are
created dynamically by ARP.
Optional
20 minutes by default.
Optional
Enabled by default.
Remarks
—
Optional
Enabled by default.
Optional
Disabled by default.
—
Optional
Enabled by default.