No, but if you're using Advanced Networking you've to manage the trunk configuration on the switch ports. Every Virtual Router has a public IP on a specific interface and a specific VLAN and a private IP on another interface in another vlan that acts as a gateway for the instance. So, if VR and instance are in the same host, packets do not exit from host and instance are reachable, but if they run on different hosts the packets must go through a switch that should be configured to allow traffic on that private VLAN. So, in fact, you can allow a single switch port to forward traffic on multiple VLAN, this is called Trunk.
On Tue, Jun 1, 2021 at 12:31 PM Jeremy Hansen <[email protected]> wrote: > Ahh, so I just noticed that I could also migrate the router and when I do > that, everything works as expected again. So is this how migrates work? > Do routers always have to move with the instance? > > -jeremy > > > On Jun 1, 2021, at 3:26 AM, Jeremy Hansen <[email protected]> wrote: > > One thing I noticed, and I don’t know if this is expected, but the virtual > router my instance is using remains on the original VM host. If I log in > to the guest instance while it’s on the second VM host, I can no longer > ping the private net gateway: > > <Screen Shot 2021-06-01 at 3.24.53 AM.png> > > and the virtual router can’t ping the private IP > > <Screen Shot 2021-06-01 at 3.23.34 AM.png> > > If I migrate the instance back, it ping reachable again: > > <Screen Shot 2021-06-01 at 3.26.36 AM.png> > > > Thanks > -jeremy > > > > On Jun 1, 2021, at 3:07 AM, Jeremy Hansen <[email protected]> wrote: > > Hmm. VM hosts are on the same vlan. Port configuration on both hosts is > exactly the same. I’m not saying it isn’t vlan related but I would expect > neither host to work if it was a vlan issue? > > Thanks > > On Jun 1, 2021, at 2:47 AM, Alessandro Caviglione <[email protected]> > wrote: > > I think that your switch doesn't have ports tagged with all required > VLANs... > > On Tue, Jun 1, 2021 at 11:20 AM Jeremy Hansen <[email protected]> wrote: > > > I set up another VM host so now I have two VM hosts. I’m experimenting > with live migrations. It looks like the VM migrates, but I can no longer > SSH to the guest once it’s migrated. I’m using an isolated network. I > setup firewall rules to allow all, along with port forwarding rules for > ssh. I’m using the CentOS 5.5 template. When I migrate to the second VM > host, ping/icmp still works, but I’m unable to ssh to the VM guest. If I > migrate back to the original VM host, everything is fine again. Any clues > what I’m doing wrong on the second VM host or why rules would change on the > migration? > > Thanks > -jeremy > > > > > >
