B+B SmartWorx V3, Configuration Manual

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4. CONFIGURATION
Default Gateway
and
DNS Server
items are used only if the
DHCP Client
item is set to
disabled and if the Primary or Secondary LAN is selected by Backup routes system as a
default route (selection algorithm is described in section 4.6 Backup Routes ).
There can be only one active bridge on the router at the moment. Only DHCP Client , IP
Address and Subnet Mask parameters are used to configure the bridge. Primary LAN has got
higher priority in this respect when both interfaces (eth0, eth1) are added to the bridge. Other
interfaces (wlan0 – wifi) can be added (or deleted) to (from) existing bridge at any moment.
Moreover, the bridge can be created on demand of such interfaces but not configured by their
respective parameters.
DHCP server assigns IP address, gateway IP address (IP address of the router) and IP
address of the DNS server (IP address of the router) to the connected clients. If these values
are filled-in by the user in the configuration form, they are preferred.
DHCP server supports static and dynamic assignment of IP addresses. Dynamic DHCP
server assigns clients IP addresses from a defined address space. Static DHCP assigns IP
addresses that correspond to the MAC addresses of connected clients.
Item Description
Enable dynamic
DHCP leases If checked, dynamic DHCP server enabled.
IP Pool Start Start of IP addresses allocated to the DHCP clients.
IP Pool End End of IP addresses allocated to the DHCP clients.
Lease time Client can use the IP address for this amount of time in seconds.
Table 15: Configuration of Dynamic DHCP Server
Item Description
Enable static
DHCP leases If checked, static DHCP server enabled.
MAC Address MAC address of a DHCP client.
IP Address Assigned IP address.
Table 16: Configuration of Static DHCP Server
It is important not to overlap ranges of static allocated IP addresses with addresses allo-
cated by the dynamic DHCP. Collision of IP addresses and incorrect function of network may
occur if ranges overlaped.
Example 1: The network interface with dynamic DHCP server
•
The range of dynamic allocated addresses from 192.168.1.2 to 192.168.1.4.
• The address is allocated 600 second (10 minutes).
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