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AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers 89
RouterOS v3 Configuration and User Guide
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 00-aa-00-62-c6-09
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, but there will be no need to add the router's
MAC address to other hosts' ARP tables.
Example
[admin@AT-WR4562] ip arp> add address=10.10.10.10 interface=ether2 mac-address=06 \
\... :21:00:56:00:12
[admin@AT-WR4562] ip arp> print
Flags: X - disabled, I - invalid, H - DHCP, D - dynamic
# ADDRESS MAC-ADDRESS INTERFACE
0 D 2.2.2.2 00:30:4F:1B:B3:D9 ether2
1 D 10.5.7.242 00:A0:24:9D:52:A4 ether1
2 10.10.10.10 06:21:00:56:00:12 ether2
[admin@AT-WR4562] ip arp>
If static arp entries are used for network security on an interface, you should set arp to 'reply-only' on
that interface. Do it under the relevant /interface menu:
[admin@AT-WR4562] ip arp> /interface ethernet set ether2 arp=reply-only
[admin@AT-WR4562] ip arp> print
Flags: X - disabled, I - invalid, H - DHCP, D - dynamic
# ADDRESS MAC-ADDRESS INTERFACE
0 D 10.5.7.242 00:A0:24:9D:52:A4 ether1
1 10.10.10.10 06:21:00:56:00:12 ether2
[admin@AT-WR4562] ip arp>
5.1.4 Proxy-ARP feature
Description
A router with properly configured proxy ARP feature acts like a transparent ARP proxy between directly
connected networks. Consider the following network diagram.