Easy methods to use the ip neigh command: 2-Minute Linux Ideas

Hello, that is Sandra Henry-Stocker, creator of the “Unix as a Second Language” weblog on NetworkWorld.

On this Linux tip, we’re going to have a look at the ip neigh command. It really works rather a lot just like the arp command, however is significantly newer and nonetheless in lively improvement. It gives community particulars – IP and MAC addresses — together with a sign of every system’s accessibility, however just for methods in your native community.

Here is an instance:

Most of this info is easy. It reveals the IP addresses on the left, the community interface on the system you are connecting from (third discipline), the {hardware} deal with of the distant system following the time period “lladdr” (hyperlink stage deal with) and the connection standing. STALE entries are legitimate however counsel there have not been any connections shortly.

PERMANENT – manually added to the arp desk as a static entry

REACHABLE – related just lately

DELAY – no latest verification acquired

STALE – no verification for 30 seconds or extra

INCOMPLETE – deal with decision in progress

In case you are curious, the primary three bytes of every {hardware} deal with (e.g., f8:8e:85) signifies the gadget’s producer. This one (third within the listing above) is a Comtrend router.

NOTE: The system this command is run on is not included within the output as a result of it isn’t wanted within the arp desk used to hook up with different methods.

That’s your Linux tip for the ip neigh command.

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