Differences

This shows you the differences between two versions of the page.

--- linux_wiki:route_ip_traffic_and_create_static_routes [2016/10/08 17:46]
billdozor
+++ linux_wiki:route_ip_traffic_and_create_static_routes [2019/05/25 23:50] (current)
@@ Line 11: / Line 11: @@
 The following virtual machines will be used:
   * server1.example.com (192.168.1.150) -> Configure the routes here
+----
+====== Help ======
+Finding help in this section.
+  * nmcli examples<code bash>man nmcli-examples</code>
 ----
@@ Line 18: / Line 25: @@
 Ensure IP Forwarding is enabled if using router like functionality
 <code bash>
-# Temp Immediate Change
-echo 1 > /proc/sys/net/ipv4/ip_forward
 # Persistent Change that takes place upon system boot
 vim /etc/sysctl.d/overrides.conf
@@ Line 33: / Line 37: @@
 </code>
-\\
+===== Persistent Static Route =====
-Create static route (NOT persistent)
-<code bash>
-ip route add 216.58.217.0/24 via 192.168.1.254 dev eth1
-</code>
-  * 216.58.217.0/24 -> destination network
-  * via 192.168.1.254 -> use this gateway
-  * dev eth1 -> use this interface
-\\
+Creating a persistent static route.
-Remove static route
-<code bash>
-ip route delete 216.58.217.0/24 via 192.168.1.254 dev eth1
-</code>
-\\
+----
-===== Persistent Static Route =====
+==== Option A: Use nmcli ====
-Create config file
+Interface specific route using nmcli.
-<code bash>
+  * Create route<code bash>nmcli con mod enp0s3 +ipv4.routes 216.58.219.0/24</code>
-vim /etc/sysconfig/static-routes
+  * Bring up the new connection config<code bash>nmcli con up enp0s3</code>
+  * Verify route<code bash>ip route show</code>
+----
+==== Option B: Use nmtui ====
+  * Open nmtui<code bash>nmtui</code>
+  * Enter on "Edit a connection"
+  * Select the target network interface to use, press Enter.
+    * Scroll down to "Routing", Enter on "<Edit...>"
+    * Enter on "<Add...>"
+      * Type the Destination/Prefix
+      * Next Hop
+      * Optional Metric (default static is 0)
+    * Tab to <OK> and press 'Enter'
+  * Scroll to the bottom and Enter on "<OK>"
+  * Tab over to <QUIT>
+  * File is created at: /etc/sysconfig/network-scripts/route-<ifname>
+  * Restart the network service<code bash>systemctl restart network</code>
+  * View route<code bash>ip route show</code>
+----
+==== Option C: Use a static config file ====
+**Note**: This method is considered "legacy", but if it works, that is all that matters on the exam.
+  * Create config file<code bash>vim /etc/sysconfig/static-routes
+# Minimal route entry
+any net 216.58.217.0/24 gw 192.168.1.254
+# Can also specify a device to use for the route
 any net 216.58.217.0/24 gw 192.168.1.254 dev eth0
-</code>
-  * any net -> source from any network
-  * 216.58.217.0/24 -> traffic to this destination
-  * gw 192.168.1.254 -> use this gateway
-  * **OPTIONAL**: dev eth0 -> use this device
-\\
+# Can also specify a route metric
-Restart the network service
+any net 216.58.217.0/24 gw 192.168.1.254 dev eth0 metric 110</code>
-<code bash>
+    * any -> source from any
-systemctl restart network
+    * net 216.58.217.0/24 -> traffic to this network destination
-</code>
+    * gw 192.168.1.254 -> use this gateway
+    * **OPTIONAL**: dev eth0 -> use this device
+  * Restart the network service<code bash>systemctl restart network</code>
+  * View route<code bash>ip route show</code>
 ----