We have a variation on this one - We have a redundant PC with a VIP at several sites. The 6.x CCR's will not update the ARP table with the correct MAC when the PC's switch roles. Deleting the MAC associated with the VIP immediately corrects the issue. In our case it seems that the order of the MAC seems to affect if/when the problem happens.
>After scratching my head for a day I just figured out what is causing these >support calls where nothing seems wrong except the user cannot get online. >Turns out the CCR I have routing this part of the network is experiencing a >bug in the ARP table. For whatever reason, customers would get an IP >assigned but that IP address had a different MAC attached in the ARP table >on the CCR. Delete the entry manually and it immediately adds the correct >one it and everything is fine. The ARP timeout is set to the default and >lowest possible 30 minutes. >A forum search for 6.x ARP bug found this report of the same issue. >http://forum.mikrotik.com/viewtopic.php?f=2&t=78773 _______________________________________________ Mikrotik mailing list [email protected] http://mail.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
