Allied Telesis AT-WR4500 manual Dhcp Client Setup, Submenu level /ip dhcp-client

AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers	117
RouterOS v3 Configuration and User Guide

68 port. The initial negotiation involves communication between broadcast addresses (on some phases sender will use source address of 0.0.0.0 and/or destination address of 255.255.255.255). You should be aware of this when building firewall.

Additional Resources

http://www.isc.org/index.pl?/sw/dhcp/

http://en.tldp.org/HOWTO/DHCP/index.html

http://en.wikipedia.org/wiki/Dhcp

6.1.2 DHCP Client Setup

Submenu level: /ip dhcp-client

Description

The RouterOS DHCP client may be enabled on any Ethernet-like interface at a time. The client will accept an address, netmask, default gateway, and two dns server addresses. The received IP address will be added to the interface with the respective netmask. The default gateway will be added to the routing table as a dynamic entry. Should the DHCP client be disabled or not renew an address, the dynamic default route will be removed. If there is already a default route installed prior the DHCP client obtains one, the route obtained by the DHCP client would be shown as invalid.

Property Description

add-default-route(yes no; default: yes) - whether to add the default route to the gateway specified by the DHCP server

address (read-only: IP address/netmask) - IP address and netmask, which is assigned to DHCP Client from the Server

client-id(text) - corresponds to the settings suggested by the network administrator or ISP. Commonly it is set to the client's MAC address, but it may as well be any text string

dhcp-server(read-only: IP address) - IP address of the DHCP server

expires-after(read-only: time) - time, when the lease expires (specified by the DHCP server)

gateway (read-only: IP address) - IP address of the gateway which is assigned by DHCP server host-name(text) - the host name of the client as sent to a DHCP server

interface (name) - any Ethernet-like interface (this includes wireless and EoIP tunnels) on which the client searches for a DHCP server

primary-dns(read-only: IP address) - IP address of the primary DNS server, assigned by the DHCP server

primary-ntp(read-only: IP address) - IP address of the primary NTP server, assigned by the DHCP server

secondary-dns(read-only: IP address) - IP address of the secondary DNS server, assigned by the DHCP server

secondary-ntp(read-only: IP address) - IP address of the secondary NTP server, assigned by the DHCP server

status (read-only: bound error rebinding... renewing... requesting... searching... stopped) - shows the status of DHCP slient

use-peer-dns(yes no; default: yes) - whether to accept the DNS settings advertized by DHCP server (they will override the settings put in the /ip dns submenu)

use-peer-ntp(yes no; default: yes) - whether to accept the NTP settings advertized by DHCP server (they will override the settings put in the /system ntp client submenu)

Command Description

release - release current binding and restart DHCP client

renew - renew current leases. If the renew operation was not successful, client tries to reinitialize lease (i.e. it starts lease request procedure (rebind) as if it had not received an IP address yet)