[ovirt-users] Can´t use a VM Network VLAN, because the Virtual Machines inside can't reach the Gateway

Donny Davis donny at cloudspin.me
Wed Jul 1 02:23:41 UTC 2015


Let us know how it works out, I am curious to see if having a untagged and
tagged interface on the same bridge was an issue.
On Jun 30, 2015 10:21 PM, "Julián Tete" <danteconrad14 at gmail.com> wrote:

> Thanks Donny, Tomorrow I'm going to try this. :)
>
> 2015-06-30 21:12 GMT-05:00 Donny Davis <donny at cloudspin.me>:
>
>> That tells me that there is a tagging issue between the host and the
>> switch.
>> Untagged traffic flows without issue via the same interface as tagged
>> traffic.
>> As a personal best practice I separate access ports(untagged) and trunk
>> ports (tagged) traffic on different physical ports.
>> Can you setup a separate phys interface for the tagged traffic, or must
>> you be able to pass both on the same interface.
>> On Jun 30, 2015 10:05 PM, "Julián Tete" <danteconrad14 at gmail.com> wrote:
>>
>>> My mgmt network works wonderfully, Virtual Machines created on the mgmt
>>> even can reach Internet. But my company wants the traffic separated.
>>>
>>> Thanks Donny, I'm a RHCSA from Colombia, but I'm learning about oVirt.
>>> (oVirt is a new thing in my country)
>>>
>>> P.S : I want to put VMware in the Trash Can too. ^_ ^
>>>
>>> 2015-06-30 20:59 GMT-05:00 Donny Davis <donny at cloudspin.me>:
>>>
>>>> There is a special place in my DC for vmware. TrashCan...lol
>>>> On Jun 30, 2015 9:50 PM, "Julián Tete" <danteconrad14 at gmail.com> wrote:
>>>>
>>>>> I'm going to check it out... but how the host can reach the Gateway
>>>>> and the Virtual Machine inside doesn't ?
>>>>>
>>>>> Donny you are very kind, this the last step to free my DataCenter from
>>>>> VMware.
>>>>>
>>>>> 2015-06-30 20:46 GMT-05:00 Donny Davis <donny at cloudspin.me>:
>>>>>
>>>>>> Does your switch have an IP on that vlan... I would step things out
>>>>>> VM>host>switch>rtr
>>>>>>
>>>>>> You have already confirmed VM to host.
>>>>>>
>>>>>> I'm going to look at your screens again to make sure I didn't miss
>>>>>> anything
>>>>>> On Jun 30, 2015 9:42 PM, "Julián Tete" <danteconrad14 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Thanks for the explanation :)
>>>>>>>
>>>>>>> I set everything of the VLANs at oVirt, After I put a IP on the
>>>>>>> Virtual Machine. But the Virtual Machine can't reach the gateway, The host
>>>>>>> can do. The Virtual Machine only can reach the host. All the machines of
>>>>>>> the range of net can reach the Virtual Machine.
>>>>>>>
>>>>>>> 2015-06-30 20:36 GMT-05:00 Donny Davis <donny at cloudspin.me>:
>>>>>>>
>>>>>>>> I'm asking if your setting the vlan on the VM or at ovirt.
>>>>>>>>
>>>>>>>> More than likely if you are coming from VMware you have the Vlans
>>>>>>>> set at the hypervisor. This does work in ovirt, I am doing it right now
>>>>>>>> On Jun 30, 2015 9:31 PM, "Julián Tete" <danteconrad14 at gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Mmmm I'm new in oVirt :(
>>>>>>>>>
>>>>>>>>> VMs Interface is Virtual MachineS Interface or VM Network
>>>>>>>>> Interface in the host ?
>>>>>>>>>
>>>>>>>>> I configured the IP of the VLAN in the host.
>>>>>>>>>
>>>>>>>>> I double check: the NIC of the Host has the VLAN assigned.
>>>>>>>>>
>>>>>>>>> Can you help me ?
>>>>>>>>>
>>>>>>>>> 2015-06-30 20:11 GMT-05:00 Donny Davis <donny at cloudspin.me>:
>>>>>>>>>
>>>>>>>>>> Are you configuring the vms interface with the vlan or tagging at
>>>>>>>>>> the host.
>>>>>>>>>> On Jun 30, 2015 7:28 PM, "Julián Tete" <danteconrad14 at gmail.com>
>>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>>> Hi Donny
>>>>>>>>>>>
>>>>>>>>>>> We have HP Switches (HP 5406zl) and they are configurated on
>>>>>>>>>>> trunk mode. (VMware is configurated to use that).
>>>>>>>>>>>
>>>>>>>>>>> Any suggestion ?
>>>>>>>>>>>
>>>>>>>>>>> Thanks for your response.
>>>>>>>>>>>
>>>>>>>>>>> :)
>>>>>>>>>>>
>>>>>>>>>>> 2015-06-30 17:51 GMT-05:00 Donny Davis <donny at cloudspin.me>:
>>>>>>>>>>>
>>>>>>>>>>>> Vlans are layer 2, sounds like a tagging problem. Cisco
>>>>>>>>>>>> switches? The tag sticks to the host bridge, but is being stripped off when
>>>>>>>>>>>> it leaves the host.... Is your switch in access mode or trunk?
>>>>>>>>>>>> Hi Friends of oVirt
>>>>>>>>>>>>
>>>>>>>>>>>> I'm trying to migrate my company from VMware to oVirt.
>>>>>>>>>>>> In my final tests, I set up 2 more VLANs in oVirt, (VM VLANs)
>>>>>>>>>>>> The Virtual Machines in these VLANs, can be reached from the
>>>>>>>>>>>> external IPs from the net range,
>>>>>>>>>>>> but from the Virtual machines only can ping the Host with the
>>>>>>>>>>>> Bridge and itself, can't reach the gateway. ¿?
>>>>>>>>>>>>
>>>>>>>>>>>> I configured a IP Forwarding in the Host with the virtual
>>>>>>>>>>>> machine, and nothing changes...
>>>>>>>>>>>>
>>>>>>>>>>>> Any idea ? This is the last duty before embrace oVirt in the
>>>>>>>>>>>> company.
>>>>>>>>>>>>
>>>>>>>>>>>> Look to the VLAN 100 configuration (My desired VM Network):
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/7hrog0a2n/
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/68b40i1vr/
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/lu6mlshgp/
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/540o1qc0t/
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/4kyg787bt/
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/v7ralh7zb/
>>>>>>>>>>>>
>>>>>>>>>>>> http://postimg.org/image/kn903cl03/
>>>>>>>>>>>>
>>>>>>>>>>>> For any idea, thanks in advance
>>>>>>>>>>>>
>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>> Users mailing list
>>>>>>>>>>>> Users at ovirt.org
>>>>>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>
>>>
>
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