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AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers 87
RouterOS v3 Configuration and User Guide
5 IP and Routing
5.1 IP Addresses and ARP
Document revisi on: 1.3 (Tue Sep 20 19:02: 32 GMT 2005)
Applies to: V2.9
5.1.1 General Information
Summary
The following Manual discusses IP address management and the Address Resolution Protocol settings. IP
addresses serve as identification when communicating with other network devices using the TCP/IP
protocol. In turn, communication between devices in one physical network proceeds with the help of
Address Resolution Protocol and ARP addresses.
Specifications
Packages required: system
License required: Level1
Submenu level: /ip address, /ip arp
Standards and Technologies: IPv4, ARP
Hardware usage: Not significant
Related Topics
Configuring Interfaces
DHCP and DNS
5.1.2 IP Addressing
Submenu level: /ip address
Description
IP addresses serve for a general host identification purposes in IP networks. Typical (IPv4) address
consists of four octets. For proper addressing the router also needs the network mask value, id est which
bits of the complete IP address refer to the address of the host, and which - to the address of the
network. The network address value is calculated by binary AND operation from network mask and IP
address values. It's also possible to specify IP address followed by slash "/" and the amount of bits that
form the network address.
In most cases, it is enough to specify the address, the netmask, and the interface arguments. The network
prefix and the broadcast address are calculated automatically.
It is possible to add multiple IP addresses to an interface or to leave the interface without any addresses
assigned to it. In case of bridging or PPPoE connection, the physical interface may bot have any address
assigned, yet be perfectly usable. Putting an IP address to a physical interface included in a bridge would
mean actually putting it on the bridge interface itself. You can use /ip address print detail to see to
which interface the address belongs to.
RouterOS has following types of addresses:
Static - manually assigned to the interface by a user
Dynamic - automatically assigned to the interface by DHCP or an estabilished PPP connections