[Users] Create VLAN for WAN traffic

Bob Doolittle bob at doolittle.us.com
Mon Dec 30 19:28:20 UTC 2013

In a situation like this a common issue is that the host you are pinging
does not have a route back to your VLAN so can't send the response. Can you
monitor traffic at the destination and see if it's receiving your pings?
Can you ping from the other direction?

In my general networking experience creating a VLAN is simple. Teaching
your LAN about your VLAN is harder, and requires external configuration of

On Dec 30, 2013 1:57 PM, "Neil Schulz" <neil.schulz at neteasy.us> wrote:

> I'm not very knowledgeable in VLANs. Sorry for the lack of knowledge in
> advance.
> Is it possible to create a VLAN for WAN traffic, to separate it from the
> internal network? I'd imagine so. It was a automated and simple process
> when use XenServer. I'm trying to switch from Xen to oVirt and when trying
> to recreate this, I'm unable to ping out from the VM.
> This leads me to believe the VLAN was created incorrectly. I created
> ifcfg-br1 on the host and through the engine, created the logical network
> with VLAN tagging 20. Does the interface, ifcfg-br1, require a public IP,
> any IP address, no ip address? (Sorry, never created a VLAN for WAN traffic
> as it was automated in XenServer)
> From there I have the VM installed and configured with a public IP
> address, however, only get Destination Host Unreachable, meaning it has no
> route out.
> I am banging my head on the desk trying to figure this out. Can anyone
> give me any assistance?
> Thank you,
> Neil
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