TRB140 Static Routes

Summary

Static routes specify over which interface and gateway a certain host or network can be reached. This chapter is an overview of the Static Routes page in {{{name}}} gateways.

The information in this page is updated in accordance with the [[Media:{{{fw_version}}}.bin|{{{fw_version}}}]] firmware version.

Static routes

To find information on static route configuration, refer to the figure and table below:

Field	Value	Description
Interface	mobile \| lan; default: mobile	The zone where the target network resides
Target*	ip4; default: 0.0.0.0	The address of the destination network
Netmask*	netmask; default: 255.255.255.255	A Mask that is applied to the Target to determine to what actual IP addresses the routing rule applies
Gateway	ip; default: none	Defines where the router should send all the traffic that applies to the rule
Metric	integer; default: 0	The metric value is used as a sorting measure. If a packet about to be routed fits two rules, the one with the lower metric is applied.
MTU	integer [64..9000]; default: 1500	Sets the maximum transmission unit (MTU) size. It is the largest size of a protocol data unit (PDU) that can be transmitted in a single network layer transaction.
Route Type	unicast \| local \| broadcast \| multicast \| unreachable \| prohibit \| backhole \| anycast \| -- custom -- ; default: unicast	Selects route type. Each type specifies a different behavior for the route: unicast - local - routes of this type are added to the 'local' routing table and used only for locally hosted IPs. broadcast - routes of this type are added to the 'local' routing table and used by link layer devices that support the broadcast address principle. multicast - unreachable - prohibit - used to prohibit traffic to specified host or network. When a destination is prohibited, the kernel sends a 'Network is unreachable' response the source address. blackhole - packets that match this type of route are discarded without any response. anycast - -- custom -- -

*Additional notes on Target & Netmask:

You can define a rule that applies to a single IP like this:

Target: some IP
Netmask: 255.255.255.255

Furthermore, you can define a rules that apply to a range of IPs. Refer to the table below for examples.

Target	Netmask	Description
192.168.2.0	255.255.255.240	Applies to IPs in the 192.168.2.0 - 192.168.2.15 range.
192.168.2.240	255.255.255.240	Applies to IPs in the 192.168.2.240 - 192.168.2.255 range.
192.168.2.161	255.255.255.0	Applies to IPs in the 192.168.2.0 - 192.168.55.255 range.
192.168.0.0	255.255.0.0	Applies to IPs in the 192.168.0.0 - 192.168.255.255 range.
192.168.2.161	255.255.255.255	Only applies to 192.168.2.161.

[[Category:TRB140]]