Ok, that makes sense. That router was searching IP's that were not available, and coming up short.
On my end it was probably just a loop or pathing problem that causes ARP to not respond across the network temporarily. -----Original Message----- From: Af [mailto:[email protected]] On Behalf Of Stefan Englhardt Sent: Thursday, February 4, 2016 9:27 AM To: [email protected] Subject: Re: [AFMUG] Mikrotik ARP Table Zeros? What's new in 6.33.5 (2015-Dec-28 09:13): [...] *) arp - show incomplete ARP entries; [...] -----Ursprüngliche Nachricht----- Von: Af [mailto:[email protected]] Im Auftrag von Faisal Imtiaz Gesendet: Donnerstag, 4. Februar 2016 16:32 An: [email protected] Betreff: Re: [AFMUG] Mikrotik ARP Table Zeros? Thanks, that would explain it. Regards. Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: [email protected] ----- Original Message ----- > From: "Dennis Burgess" <[email protected]> > To: [email protected] > Sent: Thursday, February 4, 2016 9:04:32 AM > Subject: Re: [AFMUG] Mikrotik ARP Table Zeros? > All zeros means it sent a ARP broadcast out but has not received a ARP > response. > > Dennis Burgess, CTO, Link Technologies, Inc. > [email protected] – 314-735-0270 x103 – www.linktechs.net > > -----Original Message----- > From: Af [mailto:[email protected]] On Behalf Of Faisal Imtiaz > Sent: Wednesday, February 3, 2016 9:37 PM > To: [email protected] > Subject: Re: [AFMUG] Mikrotik ARP Table Zeros? > > What version of ROS ? > > I saw something similar on another router a couple of days back. > It was someone else's router, not sure how they fixed it. > > MT forums suggest to upgrade to 6.34 for the fix.. > > YMMV. > > Faisal Imtiaz > Snappy Internet & Telecom > 7266 SW 48 Street > Miami, FL 33155 > Tel: 305 663 5518 x 232 > > Help-desk: (305)663-5518 Option 2 or Email: [email protected] > > ----- Original Message ----- >> From: "Sterling Jacobson" <[email protected]> >> To: "[email protected]" <[email protected]> >> Sent: Wednesday, February 3, 2016 9:31:49 PM >> Subject: [AFMUG] Mikrotik ARP Table Zeros? > >> I've never seen this, but a router I am using is filling up it's ARP >> table with Zeros on available IP's. >> >> As shown in the picture. >> >> This is a very simple routeros setup with one ether1 interface >> bridged with a few EoIP tunnels >> >> Obviously somewhere in the network I'm doing something quite wrong >> and it's causing this routers ARP table to register as all Zeros. >> >> These are active device IP's, so only the ones that SHOULD have MAC's >> are showing, but their MACs are all Zeros. >> >> Just want to see if anyone has a general idea of what causes this on > > RouterOS so I know where to start looking.
