Thanks Simon, link up/down has not helped, setting tso etc off on the link has not helped either. Connectivity is lost as usual after ~4 hours.
I found some suggestions to try and use the e1000 nic instead of virtio, will do that. Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "Simon Weller" <swel...@ena.com> > To: "dev" <d...@cloudstack.apache.org>, "Cloudstack Users List" > <users@cloudstack.apache.org> > Sent: Sunday, 31 May, 2015 22:36:56 > Subject: Re: Regular total loss of connectivity > If you ifdown the interface on the router and then ifup it again, does the arp > problem resolve itself? > > We've seen a similar issue before caused by malicious/heavy traffic related to > this bug: > > https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/997978 > > - Si > ________________________________________ > From: Nux! <n...@li.nux.ro> > Sent: Sunday, May 31, 2015 4:25 PM > To: dev; Cloudstack Users List > Subject: Regular total loss of connectivity > > Hi, > > Following a power cut, one of my cloudstack deployments is having a really > weird > problem that I cannot seem to solve on my own. > Every 3 hours all the public IPs on the VR stop responding from the Internet. > From the VR they are of course all reachable. > In the same VLAN as the public IPs there is another physical server, this one > can also access the VMs on their IPs just fine. > > The provider has not found the problem and hints at problems with the cloud > platform, however cloudstack worked just fine until the power cut, not to > mention the problem persists through HV and ACS upgrades. > > I'm thinking network side arp issues or something like this, alas I am not > that > good with network stuff and don't have access to it anyway. > > If I reboot the VR once or twice the IPs start working again and the VMs are > accessible from the internet. > > Ideas? > > Env: CentOS 6, KVM, ACS 44 to 4.5.1, Adv zone > > Lucian > > -- > Sent from the Delta quadrant using Borg technology! > > Nux! > www.nux.ro