Installation manual

Operation Manual - Network Protocol
Quidway S3000-EI Series Ethernet Switches Chapter 1
ARP Configuration
Huawei Technologies Proprietary
1-3
r Table 1-2 Configure the dynamic ARP aging time
Operation Command
Configure the dynamic ARP aging timer
arp timer aging aging-time
restore the default dynamic ARP aging time
und
o arp timer aging
By default, the aging time of dynamic ARP aging timer is 20 minutes.
1.2.3 Enabling/Disabling hecking Function of A
Y ntrol the ARP
e add
erform the following configuration in system view.
ARP the C RP Entry
ou can use the following command to co device whether to learn the
ntry where the MAC address is multicast MAC ress.
P
Table 1-3 Enabling/Disabling ARP the checking function of ARP entry
Operation Command
Enable the checking of ARP entry, that is, the device
does not learn the ARP entry where the MAC address is
arp check enable
multicast MAC address
Disable the checking of ARP entry, that is, the device
learns the ARP entry where the MAC address is
undo arp check enable
multicast MAC address
By default, the checking ry is enabled, that is, the devic arn the
ARP entry where the MA s multicast MAC address.
1.3 Grat
1.3.1 Gratu
Gratuitous ARP function is to implement the following functions by sending out
ratuitous ARP packets:
z If the device which sends the gratuitous ARP packet changed its hardware
nterface card changed, and then reboots),
dress in the cache of other devices update
accordingly. For example, when a device receives a gratuitous ARP request
e device from an IP address, then the sending hardware
address (such as Ethernet address) in the gratuitous ARP request needs to
gratuitous ARP request. ARP request is broadcast on the
of ARP ent
C address i
e does not le
uitous ARP Configuration
itous ARP Overview
g
z By sending gratuitous ARP packets, network devices can figure out whether the IP
addresses of other devices conflict with that of its own.
address (probably, it turns off, has its i
this packet can make old hardware ad
existing in the cache of th
update the content in the cache. The above operation must be done when a
device receives any