RUT850 LAN: Difference between revisions

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[[Image:Network lan configuration general.PNG]]
[[Image:Network lan configuration general.PNG]]


{| class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | FIELD NAME
        <th>field name</th>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | VALUE
      <th>value</th>
! style="width: 579px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | DESCRIPTION
      <th>description</th>
|-
    </tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | IP address
    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | ip; Default: '''192.168.1.1'''
      <td>IP address</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | IP address that the device uses on the LAN network  
      <td>ip; Default: '''192.168.1.1'''</td>
|-
      <td>IP address that the device uses on the LAN network </td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | IP netmask
    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | ip; Default: '''255.255.255.0''
    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | A netmask is used to define how “large" the LAN network is
      <td>IP netmask</td>
|-
      <td>ip; Default: '''255.255.255.0'''</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | IP broadcast
      <td>A netmask is used to define how “large" the LAN network is</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | ip; Default: " "
    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | IP broadcasts are used by BOOTP and DHCP clients to find and send requests to their respective servers
    <tr>
|-
    <td>IP broadcast</td>
|}
        <td>ip; Default: " "</td>
        <td>IP broadcasts are used by BOOTP and DHCP clients to find and send requests to their respective servers</td>
    </tr>
</table>


===Advanced Settings===
===Advanced Settings===
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[[Image:Network lan configuration advanced settings rut850.PNG]]
[[Image:Network lan configuration advanced settings rut850.PNG]]


{| class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | FIELD NAME
        <th>field name</th>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | VALUE
      <th>value</th>
! style="width: 579px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | DESCRIPTION
      <th>description</th>
|-
    </tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Override MTU
    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [0..1500]; Default: '''1500'''
      <td>Override MTU</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | MTU (Maximum Transmission Unit) specifies the largest possible size of a data packet
      <td>integer [0..1500]; Default: '''1500'''</td>
|-
      <td>MTU (Maximum Transmission Unit) specifies the largest possible size of a data packet</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Use gateway metric
    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer; Default: '''0'''
    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | The LAN configuration generates an entry in the routing table. In this field you can alter the metric of that entry. Higher metric means higher priority
      <td>Use gateway metric</td>
|-
      <td>integer; Default: '''0'''</td>
|}
      <td>The LAN configuration generates an entry in the routing table. In this field you can alter the metric of that entry. Higher metric means higher priority</td>
    </tr>
</table>


==DHCP Server==
==DHCP Server==
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[[Image:Network lan dhcp server general settings rut850.PNG]]
[[Image:Network lan dhcp server general settings rut850.PNG]]


{| class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | FIELD NAME
        <th>field name</th>
! style="width: 250px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | VALUE
      <th>value</th>
! style="width: 579px; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" | DESCRIPTION
      <th>description</th>
|-
    </tr>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | DHCP
    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Enable {{!}} Disable {{!}} DHCP Relay; Default: '''Enable'''
      <td>DHCP</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Enables or disables DHCP Server. If DHCP Relay is selected, you will be prompted to enter an IP address of another DHCP server in your LAN. In this case, Whenever a new device connects to the router, the router will redirect any DHCP requests to the specified DHCP Server
      <td>Enable {{!}} Disable {{!}} DHCP Relay; Default: '''Enable'''</td>
|-
      <td>Enables or disables DHCP Server. If DHCP Relay is selected, you will be prompted to enter an IP address of another DHCP server in your LAN. In this case, Whenever a new device connects to the router, the router will redirect any DHCP requests to the specified DHCP Server</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Start
    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [1..253]; Default: '''100'''
    <tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | The starting IP address value. e.g., if your router’s LAN IP is 192.168.2.1 and your subnet mask is 255.255.255.0 that means that in your network a valid IP address has to be in the range of [192.168.2.0..192.168.2.254] (192.168.2.255 is a special unavailable address). If the Start value is set to 100 then the DHCP server will only lease out addresses starting from 192.168.2.100
      <td>Start</td>
|-
      <td>integer [1..253]; Default: '''100'''</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Limit
      <td>The starting IP address value. e.g., if your router’s LAN IP is 192.168.2.1 and your subnet mask is 255.255.255.0 that means that in your network a valid IP address has to be in the range of [192.168.2.0..192.168.2.254] (192.168.2.255 is a special unavailable address). If the Start value is set to 100 then the DHCP server will only lease out addresses starting from 192.168.2.100</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | integer [1..4294967296]; Default: '''150'''
    </tr>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | How many addresses the DHCP server can lease out. Continuing from the above example: if the start address is 192.168.2.100 and the server can lease out 150 (default limit value), availabe addresses will be from 192.168.2.100 to 192.168.2.249 (100 + 150 – 1 = 249; this is because the first address is inclusive)
    <tr>
|-
    <td>Limit</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Lease time
        <td>integer [1..4294967296]; Default: '''150'''</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | time in 'h' (hours) or 'm' (minutes); Default: '''12h'''
        <td>How many addresses the DHCP server can lease out. Continuing from the above example: if the start address is 192.168.2.100 and the server can lease out 150 (default limit value), availabe addresses will be from 192.168.2.100 to 192.168.2.249 (100 + 150 – 1 = 249; this is because the first address is inclusive)</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | The duration of an IP lease. Leased out addresses will expire after the amount of time specified in this field and the device that was using the lease will have to request a new DHCP lease. However, if the device stays connected, its lease will be renewed after half of the specified amount of time passes, e.g., if the lease time is 12 hours, then every 6 hours the device will send a request to the DHCP server asking to renew its lease
    </tr>
Lease time can be set in '''hours''' ('''h''') or '''minutes''' ('''m'''). The minimal amount of time that can be specified is '''2min''' ('''2m''')
    <tr>
|-
    <td>Lease time</td>
! style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Use WAN DNS
        <td>time in 'h' (hours) or 'm' (minutes); Default: '''12h'''</td>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | yes {{!}} no; Default: '''no'''
        <td>he duration of an IP lease. Leased out addresses will expire after the amount of time specified in this field and the device that was using the lease will have to request a new DHCP lease. However, if the device stays connected, its lease will be renewed after half of the specified amount of time passes, e.g., if the lease time is 12 hours, then every 6 hours the device will send a request to the DHCP server asking to renew its lease
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: top; background: white;" | Automatically set's WAN DNS which advertises different DNS servers to clients. Reconnect the Wireless connection's to see the changes
Lease time can be set in '''hours''' ('''h''') or '''minutes''' ('''m'''). The minimal amount of time that can be specified is '''2min''' ('''2m''')</td>
|-
    </tr>
|}
    <tr>
      <td>Use WAN DNS</td>
      <td>yes {{!}} no; Default: '''no'''</td>
      <td>Automatically set's WAN DNS which advertises different DNS servers to clients. Reconnect the Wireless connection's to see the changes</td>
    </tr>
</table>


===Advanced Settings===
===Advanced Settings===
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[[Image:Network lan dhcpserver advanced.PNG]]
[[Image:Network lan dhcpserver advanced.PNG]]


{| class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; background: black; color: white;"  | Field name
        <th>field name</th>
! style="width: 250px; background: black; color: white;"  | Value
      <th>value</th>
! style="width: 1200px; background: black; color: white;" | Description
      <th>description</th>
|-
    </tr>
! style="text-align: left; vertical-align: top;" | Dynamic DHCP
    <tr>
| style="text-align: left; vertical-align: top;" | yes {{!}} no; Default: '''yes'''
      <td>Dynamic DHCP</td>
| style="text-align: left; vertical-align: top;" | Enables Dynamic allocation of client addresses. If this is disabled, only clients that have static IP leases will be served
      <td>yes {{!}} no; Default: '''yes'''</td>
|-
      <td>Enables Dynamic allocation of client addresses. If this is disabled, only clients that have static IP leases will be served</td>
! style="text-align: left; vertical-align: top;" | Enable DNS rebind protection
    </tr>
| style="text-align: left; vertical-align: top;" | yes {{!}} no; Default: '''yes'''
    <tr>
| style="text-align: left; vertical-align: top;" | Enables DNS rebind attack protection by discarding upstream RFC1918 responses (leave default unless necessary otherwise)
      <td>Enable DNS rebind protection</td>
|-
      <td>yes {{!}} no; Default: '''yes'''</td>
! style="text-align: left; vertical-align: top;" | Force
      <td>Enables DNS rebind attack protection by discarding upstream RFC1918 responses (leave default unless necessary otherwise)</td>
| style="text-align: left; vertical-align: top;" | yes {{!}} no; Default: '''no'''
    </tr>
| style="text-align: left; vertical-align: top;" | The DHCP force function ensures that the router will always start it’s DHCP server, even if there is another DHCP server already running in the router’s network. By default the router’s DHCP server will not start when it is connected to a network segment that already has a working DHCP server
    <tr>
|-
    <td>Force</td>
! style="text-align: left; vertical-align: top;" | IP netmask
        <td>yes {{!}} no; Default: '''no'''</td>
| style="text-align: left; vertical-align: top;" | ip; Default: '''255.255.255.0'''
        <td>The DHCP force function ensures that the router will always start it’s DHCP server, even if there is another DHCP server already running in the router’s network. By default the router’s DHCP server will not start when it is connected to a network segment that already has a working DHCP server</td>
| style="text-align: left; vertical-align: top;" | Overrides your LAN netmask thus making the DHCP server think that it’s serving a larger or smaller network than it actually is
    </tr>
|-
    <tr>
! style="text-align: left; vertical-align: top;" | DHCP Options
    <td>IP netmask</td>
| style="text-align: left; vertical-align: top;" | string; Default: " "
        <td>ip; Default: '''255.255.255.0'''</td>
| style="text-align: left; vertical-align: top;" | Additional options to be added to the DHCP server. For example with '26,1470' or 'option:mtu, 1470' you can assign an MTU per DHCP. You can find more information on DHCP Options in the OpenWrt wiki's [https://wiki.openwrt.org/doc/uci/dhcp/ DHCP section]
        <td>Overrides your LAN netmask, thus making the DHCP server think that it’s serving a larger or smaller network than it actually is</td>
|-
    </tr>
|}
    <tr>
    <td>DHCP Options</td>
        <td>DHCP options; Default: " "</td>
        <td>Additional options to be added to the DHCP server. For example with '26,1470' or 'option:mtu, 1470' you can assign an MTU value per DHCP. You can find more information on DHCP Options [https://technet.microsoft.com/en-us/library/cc958941.aspx here] <br> You can add more options by clicking the plus symbol ([[Image:Services sms gateway auto reply plus symbol.PNG]]) located next to the field</td>
    </tr>
</table>


==Static Leases==
==Static Leases==
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[[Image:Network lan staticleases.PNG]]
[[Image:Network lan staticleases.PNG]]


{|class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; background: black; color: white;"  | Field name
        <th>field name</th>
! style="width: 250px; background: black; color: white;"  | Value
      <th>value</th>
! style="width: 1200px; background: black; color: white;" | Description
      <th>description</th>
|-
    </tr>
! style="text-align: left; vertical-align: top;" | Hostname
    <tr>
| style="text-align: left; vertical-align: top;" | string; Default: " "
      <td>Hostname</td>
| style="text-align: left; vertical-align: top;" | A custom name that will be linked with the device
      <td>string; Default: " "</td>
|-
      <td>A custom name that will be linked with the device</td>
! style="text-align: left; vertical-align: top;" | MAC address
    </tr>
| style="text-align: left; vertical-align: top;" | mac; Default: " "
    <tr>
| style="text-align: left; vertical-align: top;" | Device’s MAC address
      <td>MAC address</td>
|-
      <td>mac; Default: " "</td>
! style="text-align: left; vertical-align: top;" | IP address
      <td>Device’s MAC address</td>
| style="text-align: left; vertical-align: top;" | ip; Default: " "
    </tr>
| style="text-align: left; vertical-align: top;" | The desirable IP address that will be reserved for the specified device
    <tr>
|-
    <td>IP address</td>
|}
        <td>ip; Default: " "</td>
        <td>The desirable IP address that will be reserved for the specified device</td>
    </tr>
</table>


==IP Aliases==
==IP Aliases==
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[[Image:Network lan ipaliases.PNG]]
[[Image:Network lan ipaliases.PNG]]


{| class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; background: black; color: white;"  | Field name
        <th>field name</th>
! style="width: 250px; background: black; color: white;"  | Value
      <th>value</th>
! style="width: 1200px; background: black; color: white;" | Description
      <th>description</th>
|-
    </tr>
! style="text-align: left; vertical-align: top;" | IP address
    <tr>
| style="text-align: left; vertical-align: top;" | ip; Default: " "
      <td>IP address</td>
| style="text-align: left; vertical-align: top;" | An alternate IP address used to reach the router by a device(s) that resides in the router's LAN but has a different subnet
      <td>ip; Default: " "</td>
|-
      <td>An alternate IP address used to reach the router by a device(s) that resides in the router's LAN but has a different subnet</td>
! style="text-align: left; vertical-align: top;" | Netmask
    </tr>
| style="text-align: left; vertical-align: top;" | ip; Default: '''255.255.255.0'''
    <tr>
| style="text-align: left; vertical-align: top;" | Netmask defines how "large" a network is
      <td>Netmask</td>
|-
      <td>ip; Default: '''255.255.255.0'''</td>
! style="text-align: left; vertical-align: top;" | Gateway
      <td>Netmask defines how "large" a network is</td>
| style="text-align: left; vertical-align: top;" | ip; Default: " "
    </tr>
| style="text-align: left; vertical-align: top;" | A gateway is a network node that connects two networks using different protocols together
    <tr>
|-
      <td>Gateway</td>
|}
      <td>ip; Default: " "</td>
      <td>A gateway is a network node that connects two networks using different protocols together</td>
    </tr>
</table>


As you can see, the configuration is very similar to the static protocol; in the example above an IP address with a 99th subnet is defined. In this case, if some device has an IP in the 99th subnet (e.g., 192.168.99.xxx) and the subnet’s gateway metric is “higher” and the device is trying to reach the internet it will reroute it’s traffic not to the gateway that is defined in common configurations but through the one that is specified in IP aliases.
As you can see, the configuration is very similar to the static protocol; in the example above an IP address with a 99th subnet is defined. In this case, if some device has an IP in the 99th subnet (e.g., 192.168.99.xxx) and the subnet’s gateway metric is “higher” and the device is trying to reach the internet it will reroute it’s traffic not to the gateway that is defined in common configurations but through the one that is specified in IP aliases.
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[[Image:Network lan ipaliases advanced.PNG]]
[[Image:Network lan ipaliases advanced.PNG]]


{| class="wikitable"
<table class="nd-mantable">
|+
    <tr>
! style="width: 250px; background: black; color: white;"  | Field name
        <th>field name</th>
! style="width: 250px; background: black; color: white;"  | Value
      <th>value</th>
! style="width: 1200px; background: black; color: white;" | Description
      <th>description</th>
|-
    </tr>
! style="text-align: left; vertical-align: top;" | IP Broadcast
    <tr>
| style="text-align: left; vertical-align: top;" | ip; Default: " "
      <td>IP Broadcast</td>
| style="text-align: left; vertical-align: top;" | IP broadcasts are used by BOOTP and DHCP clients to find and send requests to their respective servers
      <td>ip; Default: " "</td>
|-
      <td>IP broadcasts are used by BOOTP and DHCP clients to find and send requests to their respective servers</td>
! style="text-align: left; vertical-align: top;" | DNS
    </tr>
| style="text-align: left; vertical-align: top;" | ip; Default: " "
    <tr>
| style="text-align: left; vertical-align: top;" | A separate DNS server to be used by the IP Alias address
      <td>DNS</td>
|-
      <td>ip; Default: " "</td>
|}
      <td>A separate DNS server to be used by the IP Alias address</td>
    </tr>
</table>
 
[[Category:RUT850 Network section]]

Latest revision as of 10:39, 7 May 2020

Main Page > EOL Products > RUT850 > RUT850 Manual > RUT850 WebUI > RUT850 Network section > RUT850 LAN

Summary

A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits or Internet links. An even greater contrast is the Internet, which is a system of globally connected business and personal computers. This chapter is an overview of RUTxxx routers' LAN section.

Configuration

General Setup


The General Setup tab provides you with the possibility to set the router's Private IP address, IP netmask and IP broadcast.

field name value description
IP address ip; Default: 192.168.1.1 IP address that the device uses on the LAN network
IP netmask ip; Default: 255.255.255.0 A netmask is used to define how “large" the LAN network is
IP broadcast ip; Default: " " IP broadcasts are used by BOOTP and DHCP clients to find and send requests to their respective servers

Advanced Settings


LAN Configurations Advanced Settings tab contains some less frequently used, more complicated configurations, such as custom MTUs and network interface metric values.

field name value description
Override MTU integer [0..1500]; Default: 1500 MTU (Maximum Transmission Unit) specifies the largest possible size of a data packet
Use gateway metric integer; Default: 0 The LAN configuration generates an entry in the routing table. In this field you can alter the metric of that entry. Higher metric means higher priority

DHCP Server

DHCP server is the router side service that can automatically configure the TCP/IP settings of any device that requests such a service. If you connect a device that has been configured to obtain an IP address automatically the DHCP server will lease out an IP address from the available IP pool and the device will be able to communicate with the router.

General


field name value description
DHCP Enable | Disable | DHCP Relay; Default: Enable Enables or disables DHCP Server. If DHCP Relay is selected, you will be prompted to enter an IP address of another DHCP server in your LAN. In this case, Whenever a new device connects to the router, the router will redirect any DHCP requests to the specified DHCP Server
Start integer [1..253]; Default: 100 The starting IP address value. e.g., if your router’s LAN IP is 192.168.2.1 and your subnet mask is 255.255.255.0 that means that in your network a valid IP address has to be in the range of [192.168.2.0..192.168.2.254] (192.168.2.255 is a special unavailable address). If the Start value is set to 100 then the DHCP server will only lease out addresses starting from 192.168.2.100
Limit integer [1..4294967296]; Default: 150 How many addresses the DHCP server can lease out. Continuing from the above example: if the start address is 192.168.2.100 and the server can lease out 150 (default limit value), availabe addresses will be from 192.168.2.100 to 192.168.2.249 (100 + 150 – 1 = 249; this is because the first address is inclusive)
Lease time time in 'h' (hours) or 'm' (minutes); Default: 12h he duration of an IP lease. Leased out addresses will expire after the amount of time specified in this field and the device that was using the lease will have to request a new DHCP lease. However, if the device stays connected, its lease will be renewed after half of the specified amount of time passes, e.g., if the lease time is 12 hours, then every 6 hours the device will send a request to the DHCP server asking to renew its lease Lease time can be set in hours (h) or minutes (m). The minimal amount of time that can be specified is 2min (2m)
Use WAN DNS yes | no; Default: no Automatically set's WAN DNS which advertises different DNS servers to clients. Reconnect the Wireless connection's to see the changes

Advanced Settings


You may also apply more complicated, less common configurations to your router's DHCP Server in the Advanced Settings tab. For example, you can apply virtually any custom DHCP configuration by typing in optional commands in the DHCP Options field.

field name value description
Dynamic DHCP yes | no; Default: yes Enables Dynamic allocation of client addresses. If this is disabled, only clients that have static IP leases will be served
Enable DNS rebind protection yes | no; Default: yes Enables DNS rebind attack protection by discarding upstream RFC1918 responses (leave default unless necessary otherwise)
Force yes | no; Default: no The DHCP force function ensures that the router will always start it’s DHCP server, even if there is another DHCP server already running in the router’s network. By default the router’s DHCP server will not start when it is connected to a network segment that already has a working DHCP server
IP netmask ip; Default: 255.255.255.0 Overrides your LAN netmask, thus making the DHCP server think that it’s serving a larger or smaller network than it actually is
DHCP Options DHCP options; Default: " " Additional options to be added to the DHCP server. For example with '26,1470' or 'option:mtu, 1470' you can assign an MTU value per DHCP. You can find more information on DHCP Options here
You can add more options by clicking the plus symbol () located next to the field

Static Leases

Static IP leases are used to reserve specific IP addresses for specific devices by binding them to their MAC address. This is useful when you have a stationary device connected to your network that you need to reach frequently, e.g., printer, fax, etc.

field name value description
Hostname string; Default: " " A custom name that will be linked with the device
MAC address mac; Default: " " Device’s MAC address
IP address ip; Default: " " The desirable IP address that will be reserved for the specified device

IP Aliases

IP Aliases are a way of defining or reaching a subnet that works in the same space as the regular network. This is useful if you need to reach the router that is located in the same network but in a different subnet. If you have a static IP configuration on your computer and don’t want to change it every time you need to reach a router in a different subnet, you can configure an IP alias in order to do so.

General setup


field name value description
IP address ip; Default: " " An alternate IP address used to reach the router by a device(s) that resides in the router's LAN but has a different subnet
Netmask ip; Default: 255.255.255.0 Netmask defines how "large" a network is
Gateway ip; Default: " " A gateway is a network node that connects two networks using different protocols together

As you can see, the configuration is very similar to the static protocol; in the example above an IP address with a 99th subnet is defined. In this case, if some device has an IP in the 99th subnet (e.g., 192.168.99.xxx) and the subnet’s gateway metric is “higher” and the device is trying to reach the internet it will reroute it’s traffic not to the gateway that is defined in common configurations but through the one that is specified in IP aliases.

Advanced Settings


You may also define a broadcast address and a custom DNS server for your IP Aliases in the Advanced Settings tab.

field name value description
IP Broadcast ip; Default: " " IP broadcasts are used by BOOTP and DHCP clients to find and send requests to their respective servers
DNS ip; Default: " " A separate DNS server to be used by the IP Alias address