D-Link DSR-250v2 Product Manual 1 - Page 50

WAN Mode Configuration, Primary WAN

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Domain name Starting IP address Ending IP address Default gateway DNS server Primary DNS server Secondary DNS server (optional) Jumbo frame Lease time (minutes) Relay gateway Allow ping from LAN DNS Proxy Apply Cancel DHCP relay - If this is selected, DHCP clients on your network will receive IP address leases from a DHCP server on a different subnet. Enter a domain name for DMZ configuration. Enter the starting IP address. Enter the ending IP address. If you select DHCP Server as the DHCP mode, enter the default gateway for the DHCP server mode. Select one of the following options for DNS servers for the DHCP clients: DNS Proxy: Enable or disable DNS Proxy. When the DNS Proxy field is selected, the device acts as a proxy for all DNS requests and communicates with the ISP's DNS servers. DNS from ISP: This option sends all DNS requests to the ISP's DNS Servers. Static DNS: This option sends all DNS requests to the configured static DNS servers. Enter the primary DNS Server IP address. Enter the secondary DNS Server IP address. It is an optional field. Jumbo frames are Ethernet frames with more than 1500 bytes of payload. When this feature is enabled, the LAN devices can exchange information at the Jumbo frames rate. Enter the duration (in minutes) for which IP addresses will be leased to clients. Enter the relay gateway IP address. This field is available when you select DHCP mode as D HCP relay. If this option is disabled, the ping requests to the LAN interface are blocked. When the DNS Proxy field is enabled, the device acts as a proxy for all DNS requests and communicates with the ISP's DNS servers. This field is available when you select DHCP relay or None as the DHCP mode. Click Apply to save your settings. Click Cancel to revert to the previous settings. WAN Mode Configuration The router supports multiple WAN links. This allows you to take advantage of rollover and load balancing features to ensure that certain Internetdependent services are prioritized in the event of unstable WAN connectivity on one of the ports. To use Auto-rollover or Load Balancing, you must configure WAN link failure detection. This involves accessing DNS servers on the Internet or ping to an Internet address (user-defined). In load balancing, you can also select None to disable the failure detection feature. When the failure detection is enabled, specify the retry interval and the number of attempts it has to connect to the configured server. If all the attempts are failed, the WAN port is considered to be down. This section discusses the following WAN modes: Primary WAN Auto-rollover using WAN Load Balancing Round Robin Spillover mode Primary WAN If you do not want to use Auto-rollover or Load balancing, select Primary WAN as the WAN mode and select the WAN port you want to set as the primary WAN port.

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DHCP relay
- If this is selected, DHCP clients on your network will receive IP address
leases from a DHCP server on a different subnet.
Domain name
Enter a domain name for DMZ configuration.
Starting IP address
Enter the starting IP address.
Ending IP address
Enter the ending IP address.
Default gateway
If you select
as the DHCP mode, enter the default gateway for the DHCP
DHCP Server
server mode.
DNS server
Select one of the following options for DNS servers for the DHCP clients:
DNS Proxy
: Enable or disable DNS Proxy. When the DNS Proxy field is selected, the
device acts as a proxy for all DNS requests and communicates with the ISP’s DNS
servers.
DNS from ISP
: This option sends all DNS requests to the ISP’s DNS Servers.
Static DNS
: This option sends all DNS requests to the configured static DNS servers.
Primary DNS server
Enter the primary DNS Server IP address.
Secondary DNS server (optional)
Enter the secondary DNS Server IP address. It is an optional field.
Jumbo frame
Jumbo frames are Ethernet frames with more than 1500 bytes of payload. When this feature
is enabled, the LAN devices can exchange information at the Jumbo frames rate.
Lease time (minutes)
Enter the duration (in minutes) for which IP addresses will be leased to clients.
Relay gateway
Enter the relay gateway IP address. This field is available when you select
as
DHCP mode
D
.
HCP relay
Allow ping from LAN
If this option is disabled, the ping requests to the LAN interface are blocked.
DNS Proxy
When the DNS Proxy field is enabled, the device acts as a proxy for all DNS requests and
communicates with the ISP’s DNS servers. This field is available when you select
DHCP
or
as the DHCP mode.
relay
None
Apply
Click
to save your settings.
Apply
Cancel
Click
to revert to the previous settings.
Cancel
WAN Mode Configuration
The router supports multiple WAN links. This allows you to take advantage of rollover and load balancing features to ensure that certain Internet-
dependent services are prioritized in the event of unstable WAN connectivity on one of the ports.
To use Auto-rollover or Load Balancing, you must configure WAN link failure detection. This involves accessing DNS servers on the Internet or
ping to an Internet address (user-defined). In load balancing, you can also select
to disable the failure detection feature. When the failure
None
detection is enabled, specify the retry interval and the number of attempts it has to connect to the configured server. If all the attempts are failed,
the WAN port is considered to be down.
This section discusses the following WAN modes:
Primary WAN
Auto-rollover using WAN
Load Balancing
Round Robin
Spillover mode
Primary WAN
If you do not want to use Auto-rollover or Load balancing, select
as the WAN mode and select the WAN port you want to set as
Primary WAN
the primary WAN port.