Differences

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--- ip [2019/02/07 16:34] – created admin
+++ ip [2019/10/24 07:12] (current) – [Setup a secondary IP on the same physical device] admin
@@ Line 42: / Line 42: @@
        valid_lft forever preferred_lft forever
 </code>
-**Attention:** The line containing the new alias name (''%%ens33:1%%'') must include ''%%secondary%%''!
+<WRAP center round important 60%>
+The line containing the new alias name (''%%ens33:1%%'') must include ''%%secondary%%''!
+</WRAP>
   * Delete alias from physical device:
@@ Line 49: / Line 52: @@
 ip addr del 172.16.134.5/23 dev ens33 label ens33:1
 </code>
+==== To make it permanent ====
+To make it permanent, you do it using ''nmcli'' or just add the following lines into ''ifcfg-ens33'' file:
+<code bash>
+IPADDR1=172.16.134.5
+PREFIX1=23
+</code>
+The ''nmcli'' command:
+<code bash>
+nmcli con mod ens192 +ipv4.addresses "172.16.134.5/23"
+</code>
+When done, just restart network: ''systemctl restart network''
+===== Remove (delete) an IP address =====
+<code bash>
+ip addr del 172.16.134.5/23 dev ens33
+</code>
+===== Setup with VLAN tag =====
+In some circumstances, a VLAN tagging is necessary. In this chapter, I show how-to setup such an interface.
+^ What             ^    ^ Value               ^
+| Physical device  | :  | ens2f0              |
+| IP address       | :  | 192.168.1.54        |
+| Netmask/Prefix   | :  | 255.255.255.0 / 24  |
+| VLAN interface   | :  | ens2f0.90           |
+==== Add a vlan tag to an interface ====
+Here we add the VLAN tag ''90'' to the interface, ''ens2f0.90'':
+<code bash>
+ip link add link ens2f0 name ens2f0.90 type vlan id 90
+</code>
+==== Add the IP to the linked device ====
+<code bash>
+ip addr add 192.168.1.54/24 dev ens2f0.90
+</code>
+==== Add a default gateway ====
+<code bash>
+ip route add default via 192.168.1.1 dev ens2f0.90
+</code>