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+.. _ip:
+
+IPv4
+====
+
+System configuration commands
+-----------------------------
+
+
+.. cfgcmd:: set system ip disable-forwarding
+
+   Use this command to disable IPv4 forwarding on all interfaces.
+
+
+.. cfgcmd:: set system ip arp table-size <number>
+
+   Use this command to define the maximum number of entries to keep in
+   the ARP cache (1024, 2048, 4096, 8192, 16384, 32768).
+
+
+.. cfgcmd:: set system ip multipath layer4-hashing
+
+   Use this command to use Layer 4 information for IPv4 ECMP hashing.
+
+
+Operational commands
+--------------------
+
+
+show commands
+^^^^^^^^^^^^^
+
+See below the different parameters available for the IPv4 **show** command:
+
+.. code-block::
+
+   vyos@vyos:~$ show ip
+   Possible completions:
+     access-list   Show all IP access-lists
+     as-path-access-list
+                   Show all as-path-access-lists
+     bgp           Show Border Gateway Protocol (BGP) information
+     community-list
+                   Show IP community-lists
+     extcommunity-list
+                   Show extended IP community-lists
+     forwarding    Show IP forwarding status
+     groups        Show IP multicast group membership
+     igmp          Show IGMP (Internet Group Management Protocol) information
+     large-community-list
+                   Show IP large-community-lists
+     multicast     Show IP multicast
+     ospf          Show IPv4 Open Shortest Path First (OSPF) routing information
+     pim           Show PIM (Protocol Independent Multicast) information
+     ports         Show IP ports in use by various system services
+     prefix-list   Show all IP prefix-lists
+     protocol      Show IP route-maps per protocol
+     rip           Show Routing Information Protocol (RIP) information
+     route         Show IP routes
+   
+
+reset commands
+^^^^^^^^^^^^^^
+
+And the different IPv4 **reset** commands available:
+
+.. code-block::
+
+   vyos@vyos:~$ reset ip 
+   Possible completions:
+     arp           Reset Address Resolution Protocol (ARP) cache
+     bgp           Clear Border Gateway Protocol (BGP) statistics or status
+     igmp          IGMP clear commands
+     multicast     IP multicast routing table
+     route         Reset IP route