Verify the IP address and default gateway on a VM (2024)

This section describes how to verify and troubleshoot issues withthe IP address and the default gateway of a VM.

To verify the IP address and default gateway on a VM:

1. Log in to the VM in question.

   See Also

   How to Trace an IP Address in 2024 [Steps & Tools for Tracing]Locating IP addresses for an instance  |  Compute Engine Documentation  |  Google CloudNetwork Discovery With NmapIP addresses  |  Compute Engine Documentation  |  Google Cloud

2. Run the following command:

   ip a

   Example of system response:

   1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether ac:de:48:92:9d:69 brd ff:ff:ff:ff:ff:ff inet 10.167.4.21/24 brd 10.167.4.255 scope global eth1 valid_lft forever preferred_lft forever inet6 fe80::aede:48ff:fe92:9d69/64 scope link valid_lft forever preferred_lft forever

   See Also

   Associate a public IP address to a virtual machine

   • If Ethernet does not have an IP address, run the following command:

     dhclient eth1

   • If Ethernet has an IP address with the /32 mask:

     1. Restart the VM.
     2. Verify ifmap-server.

   • If the interface is down, run the following command:

     ifcongfig eth1 up

3. Display the default gateway:

   route -n

   Example of system response:

   Kernel IP routing tableDestination Gateway Genmask Flags Metric Ref Use Iface0.0.0.0 10.167.4.1 0.0.0.0 UG 0 0 0 eth110.167.4.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1

4. Ping the default gateway.