3com 5500-ei pwr Installation Instruction

 

1-5 

Follow these steps to configure ARP basic functions: 

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) 

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. 

 

Follow these steps to configure gratuitous ARP: 

Enter system view 

— 

Enable the gratuitous ARP 
packet learning function 

Optional 

Enabled by default. 

Enable the master switch of a 
VRRP backup group to send 
gratuitous ARP packets 
periodically 

arp send-gratuitous enable 
vrrp 

Optional 

Disabled by default. 

Enter VLAN interface view 

interface Vlan-interface 
vlan-id 

— 

Enable the VLAN interface to 
send gratuitous ARP packets 
periodically 

gratuitous-arp 
period-sending enable 

Optional 

Enabled by default.