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Configuring ARP
This section describes how to configure ARP.
- Adjusting Aging Parameters of Dynamic ARP Entries
Properly adjusting aging parameters of dynamic ARP entries can improve network reliability. Aging and updating of dynamic ARP entries will be affected if the device is enabled to perform Layer 2 topology detection, respond to TC BPDUs, or delete dynamic ARP entries after a delay. - Configuring Static ARP
To improve communication security, static ARP entries will not be aged or overridden by dynamic ARP entries. - Optimizing Dynamic ARP
By default, hosts and routers dynamically learn ARP entries. You can adjust parameters of dynamic ARP entries based on network requirements. - Configuring Proxy ARP
The router can function as a proxy of the destination host to respond to ARP Request packets that are unreachable in some special scenarios. - Configuring Dynamic Learning of ARP Entries with Multicast MAC Addresses
After a device is enabled to learn ARP entries with multicast MAC addresses, it can generate ARP entries for the received ARP packets with multicast MAC addresses as source MAC addresses. - Configuring ARP Unicast Probe
When the peer device cannot accept broadcast packets, you can configure ARP unicast probe on the local device. The local device then sends a unicast ARP Request packet to detect whether the peer device exists. - Configuring ARP-Ping
ARP-Ping includes ARP-Ping IP and ARP-Ping MAC. ARP-Ping sends ARP Request packets or ICMP Request packets to check whether a specified IP address or MAC address is used. - Configuring the Scheduled ARP Refresh Function
You can disable the scheduled ARP refresh function to prevent traffic jitter.