Agree with Daan. The provided information is not enough to conclude what's
wrong.

What's the cloudstack version ? Can you check if the following works or not
?

- connectivity between cloudstack VR and VMs  (use private IP)
- source nat IP of cloudstack VPC VR is reachable from the Internet
- source nat IP of cloudstack VPC VR is reachable from VMs
- other public IPs in the VPC

What is the network ACL of VPC tiers ?


-Wei

On Fri, Apr 25, 2025 at 12:00 PM Daan Hoogland <daan.hoogl...@gmail.com>
wrote:

> Sanjay,
>
> Can you check the logs for the routers?
> Also check if these routers are on a specific host as opposed to
> functioning routers.
>
> Your description is a bit vague still to give conclusive answers so
> more investigation is needed.
>
> regards,
>
> On Wed, Apr 23, 2025 at 10:39 AM Sanjay Kumar <sslinuxp...@gmail.com>
> wrote:
> >
> > Hi Team,
> >
> > Please help on connectivity issue of virtual router of cloudstack.
> >
> >
> > On Thu, Apr 17, 2025 at 11:21 AM Sanjay Kumar <sslinuxp...@gmail.com>
> wrote:
> >
> > > Hello all,
> > >
> > > We have observed recurring issue that has been observed recently in the
> > > CloudStack environment we use for hosting virtual machines.
> > >
> > > Specifically, we have identified that certain Virtual Routers lose
> > > internet connectivity, which causes disruptions to services such as
> VPNs
> > > and other network-dependent functions. This issue was first noticed
> with
> > > the infrastructure of the customer1 vpc. For the customer2 vpc case, we
> > > resolved the issue by recreating the VPC along with the associated
> guest
> > > networks.
> > >
> > > 1. Connectivity Issues:
> > >
> > > Check IP Ranges and Netmasks:
> > >
> > > Connectivity Checks:
> > > We use ping, arping, and traceroute within the virtual router to test
> > > connectivity to other VMs and external networks.
> > >
> > > Virtual Router Diagnostics:
> > > we did run "Run Diagnostics" and "Get Diagnostics" features as well but
> > > not getting any result.
> > >
> > > 2. Virtual Router Issues:
> > >
> > > Force Stop and Restart:
> > >
> > > We have tried but no luck.
> > >
> > > Destroy and Recreate:
> > >
> > > We have tried but no luck.
> > >
> > > DHCP Problems:
> > >
> > > There is no issue with dhcp.
> > >
> > > 3. Network Configuration:
> > >
> > > Network connection also ok.
> > >
> > > Any help would be really appreciated. Thank you!
> > >
> > >
> > > Regars,
> > > SK
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
>
>
>
> --
> Daan
>

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