diff --git a/sources/tech/20190423 Four Methods To Check The Default Gateway Or Router IP Address In Linux.md b/sources/tech/20190423 Four Methods To Check The Default Gateway Or Router IP Address In Linux.md new file mode 100644 index 0000000000..9ecb164307 --- /dev/null +++ b/sources/tech/20190423 Four Methods To Check The Default Gateway Or Router IP Address In Linux.md @@ -0,0 +1,147 @@ +[#]: collector: (lujun9972) +[#]: translator: ( ) +[#]: reviewer: ( ) +[#]: publisher: ( ) +[#]: url: ( ) +[#]: subject: (Four Methods To Check The Default Gateway Or Router IP Address In Linux?) +[#]: via: (https://www.2daygeek.com/check-find-default-gateway-or-router-ip-address-in-linux/) +[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/) + +Four Methods To Check The Default Gateway Or Router IP Address In Linux? +====== + +Your default gateway is the IP address of your router that you should aware of that. + +Typically this is automatically detected by your operating system during installation, if not then you may need to change it. + +If your system not able to ping self then probable it could be a gateway issue and you have to fix it. + +This might happen if you have multiple network adapters or routers on the network. + +A gateway is a router that acts as an access point to passes network data from one networks to another networks. + +The below articles will help you to gather some other information which is similar to this topic. + + * **[9 Methods To Check Your Public IP Address In Linux Command Line][1]** + * **[How To Enable (UP) And Disable (DOWN) A Network Interface Port (NIC) In Linux?][2]** + + + +This can be done using below Four commands. + + * **`route Command:`** route command is used to show and manipulate the IP routing table. + * **`ip Command:`** IP command is similar to ifconfig, which is very familiar for assigning Static IP Address, Route & Default Gateway, etc.,. + * **`netstat Command:`** netstat (“network statistics”) is a command-line tool that displays network connections related information (both incoming and outgoing) such as routing tables, masquerade connections, multicast memberships and a number of network interface + * **`routel Command:`** routel command is used to list routes with pretty output format. + + + +### 1) How To Check The Default Gateway Or Router IP Address In Linux Using route Command? + +route command is used to show and manipulate the IP routing table. + +Its primary use is to set up static routes to specific hosts or networks via an interface once the interface was configured. + +When the add or del options are used, route modifies the routing tables. Without these options, route displays the current contents of the routing tables. + +``` +# route +or +# route -n + +Kernel IP routing table +Destination Gateway Genmask Flags Metric Ref Use Iface +default www.routerlogin 0.0.0.0 UG 600 0 0 wlp8s0 +192.168.1.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp8s0 +``` + +### 2) How To Check The Default Gateway Or Router IP Address In Linux Using ip Command? + +**[IP command][3]** is similar to ifconfig, which is very familiar for assigning Static IP Address, Route & Default Gateway, etc.,. + +ifconfig command was deprecated due to no maintenance since so many years, even though it is still available on most Linux distributions. + +ifconfig command has been replaced by IP command which is very powerful and performing several network administration tasks with one command. + +IP command utility bundled with iproute2 package. By default iproute2 utility pre-installed all the major Linux distribution. + +If no, you can install it by issuing iproute2 on your terminal with help of package manager. + +``` +# ip r +or +# ip route +or +# ip route show + +default via 192.168.1.1 dev wlp8s0 proto dhcp metric 600 +192.168.1.0/24 dev wlp8s0 proto kernel scope link src 192.168.1.6 metric 600 +``` + +### 3) How To Check The Default Gateway Or Router IP Address In Linux Using netstat Command? + +netstat stands for Network Statistics, is a command-line tool that displays network connections related information (both incoming and outgoing) such as routing tables, masquerade connections, multicast memberships and a number of network interface. + +It lists out all the tcp, udp socket connections and the unix socket connections. + +It is used for diagnosing network problems in the network and to determine the amount of traffic on the network as a performance measurement. + +``` +# netstat -r + +Kernel IP routing table +Destination Gateway Genmask Flags MSS Window irtt Iface +default www.routerlogin 0.0.0.0 UG 0 0 0 wlp8s0 +192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlp8s0 +``` + +### 4) How To Check The Default Gateway Or Router IP Address In Linux Using routel Command? + +It used to list routes with pretty output format. These programs are a set of helper scripts you can use instead of raw iproute2 commands. + +The routel script will list routes in a format that some might consider easier to interpret then the ip route list equivalent. + +The routef script does not take any arguments and will simply flush the routing table down the drain. Beware! This means deleting all routes which will make your network unusable! + +``` +# routel + target gateway source proto scope dev tbl + default 192.168.1.1 dhcp wlp8s0 + 192.168.1.0/ 24 192.168.1.6 kernel link wlp8s0 + 127.0.0.0 broadcast 127.0.0.1 kernel link lo local + 127.0.0.0/ 8 local 127.0.0.1 kernel host lo local + 127.0.0.1 local 127.0.0.1 kernel host lo local +127.255.255.255 broadcast 127.0.0.1 kernel link lo local + 192.168.1.0 broadcast 192.168.1.6 kernel link wlp8s0 local + 192.168.1.6 local 192.168.1.6 kernel host wlp8s0 local + 192.168.1.255 broadcast 192.168.1.6 kernel link wlp8s0 local + ::1 kernel lo + fe80::/ 64 kernel wlp8s0 + ::1 local kernel lo local +fe80::ad00:2f7e:d882:5add local kernel wlp8s0 local + ff00::/ 8 wlp8s0 local +``` + +If you would like to print only default gateway then use the following format. + +``` +# routel | grep default + default 192.168.1.1 dhcp wlp8s0 +``` + +-------------------------------------------------------------------------------- + +via: https://www.2daygeek.com/check-find-default-gateway-or-router-ip-address-in-linux/ + +作者：[Magesh Maruthamuthu][a] +选题：[lujun9972][b] +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 + +[a]: https://www.2daygeek.com/author/magesh/ +[b]: https://github.com/lujun9972 +[1]: https://www.2daygeek.com/check-find-server-public-ip-address-linux/ +[2]: https://www.2daygeek.com/enable-disable-up-down-nic-network-interface-port-linux-using-ifconfig-ifdown-ifup-ip-nmcli-nmtui/ +[3]: https://www.2daygeek.com/ip-command-configure-network-interface-usage-linux/