On 11/9/10 6:43 PM, Derek Cormier wrote:
Hello,
I was wondering how I can make Open vSwitch function as a router with
my current configuration. I'll explain what I have set up:
Open vSwitch (vm)
|-------------------------------------------------|
| _(.1.100)_ _(.2.100)_ |
|____| br0 |__| br1 |____|
/ \ |
vm1 vm2 vm3
(.1.1) (.1.2) (.2.1)
Open vSwitch is running inside of a virtual machine. I am using
VirtualBox for my machines (Ubuntu) and NOX for a controller (with
pyswitch). The Switch VM has three ports connecting to three host
virtual machines vm1, vm2, and vm3. I labelled the IP addresses I
assigned the bridges as well as the VM's (only showing the subnet and
host IDs). I can ping from one host to another on the same subnet as
well as to its bridge. I can from the switch vm to any host. I can
also ping a bridge from a host on a different subset (for example, vm1
to br2).
However, I cannot ping from two hosts on different subnets (ex. vm1 to
vm3). I want the switch VM to function as a router and forward packets
to other networks. Please give me some advice to set me in the right
direction, or tell me if my idea is way off on how to do this.
pyswitch is a simple flow-based L2 switch, it doesn't do routing. If
you want to do routing, you'll have to implement the functionality
yourself. However, that will be a non-trivial amount of work since it
is likely you'll have to implement an ARP stack at the controller.
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