Operation Manual – ARPH3C S7500 Series Ethernet Switches Chapter 1 ARP Configuration1-10Note:If secondary IP addresses are configured for a VLAN interface, the specified maximumnumber of IP addresses to be bound to a MAC address should be bigger than the totalnumber of the primary and secondary IP addresses of the VLAN interface.1.2.9 Configuring Proxy ARPFollow these steps to configure proxy ARP:To do… Use the command… RemarksEnter system view system-view —Enter VLANinterface viewinterface Vlan-interfacevlan-id —Enable proxy ARP arp proxy enableRequiredBy default, proxy ARP isdisabled.Enable intra-VLANproxy ARParp proxy source-vlanenableOptionalBy default, intra-VLAN proxyARP is disabled, and the proxyARP only processes inter-VLANARP requests.1.2.10 Configuring ARP Source SuppressionBy setting the maximum numbers of ARP packets of different types that can be sent tothe CPU in a unit of time, you can protect the CPU from being attacked by illegal ARPpackets.Follow these steps to configure ARP source suppression:To do… Use the command… RemarksEnter system view system-view —Configure themaximum number ofARP packets of a typethat can be sent to theCPU in a unit of timearpsource-suppressionlimit { total | local |through } limit-valueOptionalThe default value varies with thetype of ARP packetsz When total is adopted, thedefault value is 100.z When local is adopted, thedefault value is 3.z When through is adopted,the default value is 3.
