Address Resolution Protocol - MikroTik RouterOS v2.9 Reference Manual

ether1 or ether2.
Example
[admin@MikroTik] ip address> add address=10.10.10.1/24 interface=ether2
[admin@MikroTik] ip address> print
Flags: X - disabled, I - invalid, D - dynamic
# ADDRESS
0 2.2.2.1/24
1 10.5.7.244/24
2 10.10.10.1/24
[admin@MikroTik] ip address>

Address Resolution Protocol

Home menu level: /ip arp
Description
Even though IP packets are addressed using IP addresses, hardware addresses must be used to
actually transport data from one host to another. Address Resolution Protocol is used to map OSI
level 3 IP addreses to OSI level 2 MAC addreses. A router has a table of currently used ARP
entries. Normally the table is built dynamically, but to increase network security, it can be built
statically by means of adding static entries.
Property Description
address ( IP address ) - IP address to be mapped
interface ( name ) - interface name the IP address is assigned to
mac-address ( MAC address ; default: 00:00:00:00:00:00 ) - MAC address to be mapped to
Notes
Maximal number of ARP entries is 8192.
If arp feature is turned off on the interface, i.e., arp=disabled is used, ARP requests from clients
are not answered by the router. Therefore, static arp entry should be added to the clients as well. For
example, the router's IP and MAC addresses should be added to the Windows workstations using
the arp command:
C:\> arp -s 10.5.8.254
If arp property is set to reply-only on the interface, then router only replies to ARP requests.
Neighbour MAC addresses will be resolved using /ip arp statically.
Example
[admin@MikroTik] ip arp> add address=10.10.10.10 interface=ether2 mac-address=06 \
\... :21:00:56:00:12
[admin@MikroTik] ip arp> print
Flags: X - disabled, I - invalid, H - DHCP, D - dynamic
# ADDRESS
0 D 2.2.2.2
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NETWORK
2.2.2.0
10.5.7.0
10.10.10.0
00-aa-00-62-c6-09
MAC-ADDRESS
00:30:4F:1B:B3:D9 ether2
BROADCAST INTERFACE
2.2.2.255 ether2
10.5.7.255 ether1
10.10.10.255 ether2
INTERFACE