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Template:Networking trb manual static routes (view source)
Revision as of 18:05, 6 May 2020
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==Static routes==
==Static routes==
[[File:{{{file_routes}}}]]
[[File:{{{file_routes}}}]]
<table class="nd-mantable">
<tr>
<th>Field</th>
<th>Value</th>
<th>Description</th>
</tr>
<tr>
<td>Interface</td>
<td>mobile | lan; default: <b>mobile</b></td>
<td>The zone where the target network resides</td>
</tr>
<tr>
<td>Target<span class="asterisk">*</span></td>
<td>ip4; default: <b>0.0.0.0</b></td>
<td>The address of the destination network</td>
</tr>
<tr>
<td>Netmask<span class="asterisk">*</span></td>
<td>netmask; default: <b>255.255.255.255</b></td>
<td>A Mask that is applied to the Target to determine to what actual IP addresses the routing rule applies</td>
</tr>
<tr>
<td>Gateway</td>
<td>ip; default: <b>none</b></td>
<td>Defines where the router should send all the traffic that applies to the rule</td>
</tr>
<tr>
<td>Metric</td>
<td>integer; default: <b>0</b></td>
<td>The <b>metric</b> 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.</td>
</tr>
<tr>
<td>MTU</td>
<td>integer [64..9000]; default: <b>1500</b></td>
<td>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.</td>
</tr>
<tr>
<td>Route Type</td>
<td>unicast | local | broadcast | multicast | unreachable | prohibit | backhole | anycast | -- custom -- ; default: <b>unicast</b></td>
<td>Selects route type. Each type specifies a different behavior for the route:
<ul>
<li><b>unicast</b> - </li>
<li><b>local</b> - routes of this type are added to the 'local' routing table and used only for locally hosted IPs.</li>
<li><b>broadcast</b> - routes of this type are added to the 'local' routing table and used by link layer devices that support the broadcast address principle.</li>
<li><b>multicast</b> - </li>
<li><b>unreachable</b> - </li>
<li><b>prohibit</b> - 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.</li>
<li><b>blackhole</b> - packets that match this type of route are discarded without any response.</li>
<li><b>anycast</b> - </li>
<li><b>-- custom --</b> - </li>
</ul>
</td>
</tr>
</table>
<br>
<span class="asterisk">*</span><b>Additional notes on Target & Netmask:</b>
You can define a rule that applies to a single IP like this:
<ul>
<li><b>Target</b>: some IP</li>
<li><b>Netmask</b>: 255.255.255.255</li>
</ul>
Furthermore, you can define a rules that apply to a range of IPs. Refer to the table below for examples.
<table class="nd-mantable">
<tr>
<th>Target</th>
<th>Netmask</th>
<th>Description</th>
</tr>
<tr>
<td>192.168.2.0</td>
<td>255.255.255.240</td>
<td>Applies to IPs in the 192.168.2.0 - 192.168.2.15 range.</td>
</tr>
<tr>
<td>192.168.2.240</td>
<td>255.255.255.240</td>
<td>Applies to IPs in the 192.168.2.240 - 192.168.2.255 range.</td>
</tr>
<tr>
<td>192.168.2.161</td>
<td>255.255.255.0</td>
<td>Applies to IPs in the 192.168.2.0 - 192.168.55.255 range.</td>
</tr>
<tr>
<td>192.168.0.0</td>
<td>255.255.0.0</td>
<td>Applies to IPs in the 192.168.0.0 - 192.168.255.255 range.</td>
</tr>
<tr>
<td>192.168.2.161</td>
<td>255.255.255.255</td>
<td>Only applies to 192.168.2.161.</td>
</tr>
</table>
