QX1000 Manual II: Administrator's Guide
Administrator’s Menus
QX1000; (SW Version 5.3.x)
135
DHCP Advanced Settings
The
DHCP Advanced Settings
page is used to modify the
advanced options of the DHCP server on the QX1000. This
page contains a table where a list of default DHCP server
options is already defined. More options can be added from
this page, as well as settings of the existing options can be
modified. All options in the table on this page are then sent to
the DHCP clients.
•
The
Authoritative
checkbox is used to enable/disable
authoritative mode on the QX1000 DHCP server.
Disabling the checkbox is recommended if several
DHCP servers are used on the network and the
QX1000 should provide network parameters to IP
phones only.
•
The
Ping Check
checkbox enables checking the
availability of an IP address on the network before
providing it to a client. If this checkbox is selected, the
QX1000 will first ping an IP address retrieved from the
IP pool and wait for a reply. If no a reply is received
within a timeout specified in the
Ping timeout
text field
(by default 1 sec), the retrieved IP address will be
provided to the client. If otherwise, a new IP address
will be retrieved from the IP pool and the procedure will
be repeated. If this checkbox is not selected, the
QX1000 will provide an IP address immediately when
requested.
Fig. II-231: DHCP Advanced Settings
The following functional buttons are available for managing
DHCP options:
Add
opens a page
Add Entry
page where a new DHCP
server option can be defined. The Add Entry page contains a
group of manipulation radio buttons to select between the
predefined DHCP server options or to define your own DHCP
server option:
•
Predefined
- this selection allows you to select from the
predefined DHCP server options.
The
Option Name
drop down list contains the most
common DHCP server options.
The
Option Value
text field requires the value for the
selected option. The type and format of the value
inserted in this field is dependent on the option
selected from the Option Name drop down list.
•
Custom
- this selection allows you to define a new
DHCP server options. The following parameters are
required to be inserted for a new option:
Fig. II-232: DHCP Advanced Settings – Add Entry
The
Option Code
text field is used to insert a code of the option. It may have values in a range from 0 to 255.
The
Option Value
Type drop down list is used to select the type of the option value. It may be an IP address, a boolean or integer value, etc.
The
Option Value
text field is used to insert the value of an option. Depending on the selected Option Value Type, this field should have the
corresponding value. Warning messages will prevent saving if the value inserted in this field does not correspond to the requirements of the
Option Value Type. If an array should be inserted here, the values should be separated with a comma.
DHCP Settings for the VLAN Interface
DHCP Settings for the VLAN Interface
is used to establish virtual networks in the QX1000’s LAN or to integrate the QX1000 into the corporate
network’s virtual LAN/WAN. DHCP service can be activated both on virtual LAN or WAN interfaces. VLAN is useful in corporate companies to divide
large networks into groups and to have devices like QX1000s and IP phones in each network separated (for example, to separate networks for data
and voice transmission). Priorities may be assigned to the interfaces for packets prioritization.
With VLAN configuration, each virtual network will be characterized with a VLAN ID (tag). Packets addressed to that network will be checked towards
the ID and if the ID number defined in the incoming packets matched the corresponding network’s ID, the packets will be accepted. Otherwise, if the
ID does not match, the packets will be dropped. In the same way, if the QX1000 is integrated into the network that uses VLAN technology, outgoing
packets should have the ID number of the corresponding virtual network, for the remote party to accept the packets from the QX1000.
