Clear ARP cache

[RRands]

Hi all - I was wondering if there is a way via CLI to clear the ARP cache? I tried ARP -d, but it always wants a host name, and I want to clear the whole cache.


Thank you!

-randy

 

[ColinTaylor]

Tried Google?

ip neigh flush all

 

[RRands]

Thank you, Colin - believe it or not, I had searched all kinds of "clear arp cache" options, but got nowhere near what you did - thank you for this - it was just what I needed!

 

[Golan Remi]

Thank you, Colin - believe it or not, I had searched all kinds of "clear arp cache" options, but got nowhere near what you did - thank you for this - it was just what I needed!

This is perfect! Is it just enough to run this command under SSH or do I need a restart after that?

 

[ColinTaylor]

This is perfect! Is it just enough to run this command under SSH or do I need a restart after that?

The effect is immediate. Although I don't really see why there's a need to do this.

 

[Golan Remi]

The effect is immediate. Although I don't really see why there's a need to do this.

While trying to solve my AIMesh issue, I removed one of my existing nodes and re-add it, just to make sure there is no issue with my method. While I fixed the mesh issue, I noticed that the node I removed and re-add, is now acting properly as an Mesh node, but also appears as an "ASUS" device on that node. When I disable this "ASUS" device, all network devices registered via that node, lose internet. I thought clearing teh arp table would help. I even cleared the NVRAM of the main router (but restored from backup), to no avail. Any other ideas?

 

[Andro]

Tried Google?

ip neigh flush all

I'm sorry to be bumping this topic with my question. If I want to remove only one entry from the arp table that has PERM status is this below command correct?

ip neigh del 172.16.0.55

I have the stock firmware and I know that I could do a reboot of the router then the arp table would be cleared. I know maybe it's a stupid question but I'm just learning.

 

[ColinTaylor]

I'm sorry to be bumping this topic with my question. If I want to remove only one entry from the arp table that has PERM status is this below command correct?

ip neigh del 172.16.0.55

I have the stock firmware and I know that I could do a reboot of the router then the arp table would be cleared. I know maybe it's a stupid question but I'm just learning.

You need to add the interface that is associated with the entry, i.e.

ip neigh del 172.16.0.55 dev br0