[ale] KVM and Cisco

[Brian Gill]

On the switch, you need to set the port as a trunk port.  The commands
would look like:

Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#int g1/0/x or fa0/x (depending on your switch model where x
is your switch port)
Switch(config-if)#switchport mode trunk
Switch(config-if)#end
Switch#wr  (save your config!)
Building configuration...
[OK]
Switch#




On Fri, May 15, 2015 at 12:12 AM, Chuck Payne <terrorpup at gmail.com> wrote:

> Guys,
>
> I might have sent this before, so sorry, but Cisco is driving me crazy.
>
> We are currently upgrading out network gear, which is a mix Cisco Small
> Business and Netgear Smart switches. We don't have any vlans. Our KVM
> servers are working with them with no issues.
>
> We purchased a couple of Cisco 2960-x switches. We  were trying to move a
> couple of our Red Hat KVM servers to it, but we are having issues getting
> the bridge device to work the same way.
>
> The first thing we noticed is that the switch turn off the port when w
> e hooked up the bridge port to the switch. We found out that it was cause
> by bpdugard.  We disable able and the bridge was able to connect aand we
> could connect to the bridge of the server from other boxes, but we could
> not connect to any of the guest on the that bridge.
>
> Now, when I am KVM host, I can ping the guest. When I am the guess I can
> ping the host bridge ip.
>
> Example
>
> Host Br3  10.0.0.10  < - - - - - - > 10.0.0.12 Guest eth0
>
> External Box 10.0.0.5 ---> 10.0.0.10 Host xxxxxx 10.0.0.12 Guest
>
> Guest 10.0.0.12 --> 10.0.0.10 Host xxxx 10.0.0.5 External Box
>
> Here what bridge control show
>
> bridge name	bridge id		STP enabled	interfaces
> br3		8000.d4ae52a5feb2	yes		em2
> 							vnet19
>
> On the switch I have turn on spanning tree hoping that would help.
>
> Is there something I need to do on the KVM side? Do have to set the port maybe as trunk? I am total lost, sorry I am not Cisco Guru. I know someone has ran into this.
>
>
> --
> Terror PUP a.k.a
> Chuck "PUP" Payne
>
> 678 636 9678
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