Configuring Subnet Destination Routes

Subnet destination routes (also commonly called "static routes") are commonly used to specify routes to destination IP addresses via gateways other than the subnet’s default route (also called a default gateway). They are called destination routes, since they are used to make routing decisions based on a packet’s destination IP address.

default route can be specified for every subnet (previous releases supported a single global default route). If you need to access systems on another subnet that cannot be reached via this gateway, then you need to specify a static route to those systems through the gateway for that subnet.

subnet also has its own subnet-specific static route table. Subnet static routes can be specified via the CLI or the GUI.

Configuring Subnet Static Routes using the GUI

Do one of the following:

In the GUI, click on the System configuration tab if it is not already selected. Then click on the arrow (u) beside VLANs to expand the branch. Click on the arrow (u)beside a VLAN to expand the branch to display the subnets. Right-click on the name of a subnet and select Add Static Route.

or

In the GUI, click on the System configuration tab if it is not already selected. Then click on the arrow (u) beside VLANs to expand the branch. Click on the arrow (u)beside a VLAN to expand the branch to display the subnets and select a subnet.

The following will be displayed.

Specify the DestinationIPAddress, Gateway, and Source IP address. This determines the route to be used. For example, you may want a set of routes on a subnet such as the following:

Destination IP Address: 0/0, Gateway: 172.16.0.1, Source IP: 188.161.0.118.32
Destination IP Address: 0/0, Gateway: 192.168.0., Source IP: sn (subnet)

This routing scenario says:If a packet destined to "anywhere" (Destination IP Address 0/0) is from Source IP 188.161.0.118/32, use Gateway 172.16.0.1. Otherwise, use Gateway 192.168.0.1.

Destination IP Address	The IP address for the host or subnet. For IPv4, specified as a Classless Internet Domain Routing (CIDR) address (e.g. 192.168.1.0/24). For IPv6, specified using IPv6 subnet notation.
Gateway	The IP address of the gateway used to reach the host or subnet.
Source IP	The IP address of where a packet originates.
Prefer	Enabling this flag allows you to specify the “preferred” route to be used for any matching destination - even if the destination address is on a subnet that is defined on FortiADC. One Prefer flag is allowed for each subnet is allowed at this time, however, this can be enabled on as many static routes as necessary.

To modify a static route, highlight the route in the table and click the Modify icon . Change the parameters and click commit.

To delete a static route, highlight the route in the table and click the Delete icon .

Configuring Subnet Static Routes using the CLI

Static routes are specified in the subnet context (See VLAN and Subnet Commands).

To display the static route for a subnet, use the show command:

eqcli > show vlan vlan_name subnet subnet_name

To add a static route from the global context, enter:

eqcli > vlan vlan_name subnet subnet_name dest destination IP src source IP gw gateway IP

The parameters are explained as follows:

vlan_name	The name of the VLAN.
subnet_name	The name of the subnet.
dest	The IP address for the host or subnet. For IPv4, specified as a Classless Internet Domain Routing (CIDR) address (e.g. 192.168.1.0/24). For IPv6, specified using IPv6 subnet notation.
gw	The IP address of the gateway used to reach the host or subnet.
src	The IP address of where a packet originates.
Prefer	Enabling this flag allows you to specify the “preferred” route to be used for any matching destination - even if the destination address is on a subnet that is defined on FortiADC. One Prefer flag is allowed for each subnet is allowed at this time, however, this can be enabled on as many static routes as necessary.

Note - the “prefer” flag, which allows you to specify the “preferred” route to be used for any matching destination - even if the destination address is on a subnet that is defined on FortiADC- is not available using eqcli at this time.

To delete a static route, use the no form of the route command.