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Plusnet Sagemcom 2704N ARP Cache

JonathanB
Hooked
Posts: 7
Registered: 08-06-2016

Plusnet Sagemcom 2704N ARP Cache

Does anyone know how long it takes for ARP cache entries to expire? Or if there is any way to trigger a refresh? (I have tried a reboot).

A raspberry pi with a static IP took the address of my NAS from DHCP before I finished setting everything up, and now the ARP table has the Pi's mac address under both IPs.

2 REPLIES
VileReynard
Seasoned Pro
Posts: 10,651
Thanks: 206
Fixes: 9
Registered: 01-09-2007

Re: Plusnet Sagemcom 2704N ARP Cache

It's the ARP cache in your router (which provides the DHCP functionality) that you need to refresh.

A reboot of your router would clear the cache & issue fresh DHCP / IP connections.

JonathanB
Hooked
Posts: 7
Registered: 08-06-2016

Re: Plusnet Sagemcom 2704N ARP Cache

I tried that but it didn't do anything - I have turned off DHCP as my Raspberry Pi does that for my network, maybe it needed to be on.

 

I left it overnight, plugged the NAS back in and it seems to have resolved itself.