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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)