Hello All,
I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment.
Basically I have the VM running on a bridged network which is also tied into GNS3 simulating a small-scale version of the production environment.
I have tried bringing down the vnetX interface and the actual virtual network itself (virbrX) with no luck.
Has anyone had to do this before/maybe knows some tips?
If more info is required about my setup, I can give it.
Thanks! Tait
On Tue, 2010-05-04 at 12:28 -0400, Tait Clarridge wrote:
I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment.
Couldn't you just do a "ifdown ethX" in the KVM itself? One of the bonded NICs will go down, and the kernel should report it as such.
Regards,
Ranbir
On Wed, 2010-05-12 at 10:09 -0400, Kanwar Ranbir Sandhu wrote:
On Tue, 2010-05-04 at 12:28 -0400, Tait Clarridge wrote:
I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment.
Couldn't you just do a "ifdown ethX" in the KVM itself? One of the bonded NICs will go down, and the kernel should report it as such.
Regards,
Ranbir
I did try that but it didn't fail over, actually I think I did "ifconfig ethX down" instead of ifdown ethX. I will try again when I get some time, thanks for the pointer! :)
Tait
On Thu, 2010-05-13 at 09:44 -0400, Tait Clarridge wrote:
On Wed, 2010-05-12 at 10:09 -0400, Kanwar Ranbir Sandhu wrote:
On Tue, 2010-05-04 at 12:28 -0400, Tait Clarridge wrote:
I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment.
Couldn't you just do a "ifdown ethX" in the KVM itself? One of the bonded NICs will go down, and the kernel should report it as such.
Regards,
Ranbir
I did try that but it didn't fail over, actually I think I did "ifconfig ethX down" instead of ifdown ethX. I will try again when I get some time, thanks for the pointer! :)
Tait
The other thing is that I wanted to simulate the switch powering off and having it auto failover to the second switch that the other half of the bond is connected to. This isn't possible in my simulation setup so manually will have to do for now.
Just wanted to confirm that the "ifdown ethX" and "ifup ethX" worked for at least a manual cutover simulation, so thanks again.
Tait
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Kanwar Ranbir Sandhu -
Tait Clarridge