In order to manage the mapping between MAC addresses & IP addresses:
Static ARP Entries
In this user interface, you can create, delete, and modify mapping between MAC addresses and IP addresses of ports.
Navigation Path
In NE Explorer, choose Security > Static ARP Entries from the navigation tree.
Parameter Description
Parameter | Value | Description |
|---|
IP Address | Example: 10.9.1.23 | Indicates the IP address in the ARP list. |
MAC Address | Example: 1C-C4-31-88-1C-C4 | Indicates the MAC address corresponding to the IP address in the ARP list. |
ARP Status | Static, Dynamic | Indicates the type of the ARP list. Address resolution protocol (ARP) is used to map the IP address (alias: logical address) at the network layer into the MAC address (alias: physical address) at the data link layer. Static ARP means that there is a fixed mapping relation between the IP address and the MAC address, and thus you cannot adjust this relation dynamically on the equipment or the router. For the static ARP, you need to manually create a table that is stored on each piece of equipment in the network. The static ARP table is used in the following scenarios: When a packet is transmitted to a destination address beyond the local network segment, this packet is bound with a specific network interface card (NIC) in order to be forwarded through this gateway. To filter out certain illegal IP addresses, you can bind these addresses with an MAC address that does not exist to realize the filtering.
Dynamic ARP means that the mapping relation between the IP address and the MAC address is constantly refreshed and adjusted through address learning. Changing the NIC or moving the host to another network usually changes the physical address. The corresponding MAC address can be obtained in a timely manner based on the dynamic ARP address resolution.
NOTE:During the equipment operation phase, ARP Status only can be set to Static by Dynamic, to improve stability of tunnels. |
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