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--- linux_wiki:route_ip_traffic_and_create_static_routes [2016/10/10 15:56]
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 32: / Line 36: @@
 ip route show
 </code>
-\\
-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
-\\
-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 a static config file**
+Creating a persistent static route.
-Create config file
+----
-<code bash>
-vim /etc/sysconfig/static-routes
-any net 216.58.217.0/24 gw 192.168.1.254 dev eth0
+==== Option A: Use nmcli ====
-</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
-\\
+Interface specific route using nmcli.
-Restart the network service
+  * Create route<code bash>nmcli con mod enp0s3 +ipv4.routes 216.58.219.0/24</code>
-<code bash>
+  * Bring up the new connection config<code bash>nmcli con up enp0s3</code>
-systemctl restart network
+  * Verify route<code bash>ip route show</code>
-</code>
-\\
+----
-View route
-<code bash>
-ip route show
-</code>
+==== Option B: Use nmtui ====
-\\
-**Option B: Use nmtui**
   * Open nmtui<code bash>nmtui</code>
@@ Line 92: / Line 65: @@
   * 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
+# Can also specify a route metric
+any net 216.58.217.0/24 gw 192.168.1.254 dev eth0 metric 110</code>
+    * any -> source from any
+    * net 216.58.217.0/24 -> traffic to this network destination
+    * 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>