Resolving Unknown IP Addresses (2024)

Unknown IP refers to the IP address of the device that is discovered from seed routers, but cannot be accessed by using Telnet/SSH and SNMP.
Resolving Unknown IP Addresses (1)

The Unknown IP has the following types depending on the possible causes.

Unknown IPs with Username/Password Mismatch - no matched credentials in the Shared Network Settings.

Unknown IPs with Incorrect Privilege Password - the devices can be accessed by Telnet/SSH but the privilege passwords configured in the Network Settings are mismatched.

Others - the devices cannot be accessed due to other reasons.

Tips:

If you deploy MPLS in your network without PE router configured, the IP address of the connected PE router interface may be discovered through the CE router and added into the unknown IP list. In this situation, you can manually add this IP address as an MPLS cloud. See MPLS Cloud for more details.

The Collect from Device column in the unknown IP list refers to the devices the unknown IP addresses are discovered from. And the devices are also called edge device.

Resolving Unknown IP Addresses (2024)

FAQs

How do I fix an unknown IP address? ›

Restart your computer or router: Restarting is sometimes the quickest solution because it may only be a temporary issue. If the problem doesn't resolve itself, turn off your router for at least 20 seconds by unplugging it. As soon as you reconnect it to the mains, it will restart itself.

How to find unknown IP addresses? ›

How to manually identify unknown devices on a network
  1. Open the Command prompt or Terminal in your Windows, Linux, or macOS system.
  2. Search all the network settings, such as default gateway and IP address, through the command prompt.
  3. Type the command "arp -a" to view the list of all IP addresses connected to your network.

How to resolve IP address? ›

How to perform the IP to hostname lookup to resolve the IP address to a hostname?
  1. Open the tool: IP to Hostname Lookup.
  2. Enter any valid IP, and click the "Convert IP to Hostname" button.
  3. The tool attempts to locate a DNS PTR record for that IP address and provides you the hostname to which this IP resolves.

How do you fix an IP address problem? ›

How to resolve top IP conflicts
  1. Isolate the devices experiencing the conflict. The key step here is to make sure you can reliably get into one of the devices to reconfigure them. ...
  2. Assign a non-conflicting address. Once you're able to reliably access one of the devices, give it a “good” IP address.

Why does it say my IP address Cannot be found? ›

Several issues, including incorrect network settings, a malfunctioning network adapter, or a problem with the router or modem, can cause it. The error message may also appear if the device or computer needs to be configured correctly to obtain an IP address automatically.

Why my IP address Cannot be found? ›

These problems stem from network failures or configuration failures in your DNS server. Network connectivity problems: Incorrect IP address settings, malfunctioning network equipment and improperly configured firewall are the most common causes of this error.

How to find an unknown device on your network? ›

Use an IP Scanner. An IP scanner is a tool you can use to find out what devices are connected to your wifi network. One of my favorites is Angry IP and it works on Windows and Mac devices. If you prefer to use your smartphone, try Fing.

How do I find the IP address of an unknown WIFI? ›

Step 1: Click on Start (Windows logo) or press the WIN on your keyboard. Step 2: Search for “cmd” and hit ENTER to launch the command prompt. Step 3: Right inside the command prompt, type in “ipconfig” and hit Enter. The number assigned to “Default Gateway” is your router's IP address.

What is a hidden IP address? ›

The link we provided before on IP address basics (to an article called, VPN 101) is something you should check out. Hiding your IP address is basically borrowing a different IP address to go anywhere on the internet and stay hidden. You're masking your real IP address with a borrowed one.

How do I know if my IP address is correct? ›

Find Command Prompt under Windows System. Type “ping 192.168. 1.1”, and press Enter. If the result is shown as below, it means that your computer has correct IP address and can connect to internet.

How do I identify an unknown device on my Wi-Fi? ›

An IP scanner is a tool you can use to find out what devices are connected to your wifi network. One of my favorites is Angry IP and it works on Windows and Mac devices. If you prefer to use your smartphone, try Fing. Both apps will scan your wireless (and wired) network to let you see what devices are connected.

What does a suspicious IP address mean? ›

This means there's suspicious user activity originating from an IP address that might be associated with a brute-force or password spray attempt according to threat intelligence sources.

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