I am using opendaylight (Carbon) and open VSwitch. I am building an application in java for which I would like to send the packet to multiple GoTo target tables. The following code fragment shows how I am building the instructions:
private static InstructionsBuilder createGoToNextTableInstruction(short idstable, short l2switchTable) {
// Create an instruction allowing the interaction.
List<Instruction> instructions = new ArrayList<Instruction>();
Instruction gotoIdsTableInstruction = new InstructionBuilder()
.setInstruction(new GoToTableCaseBuilder()
.setGoToTable(new GoToTableBuilder().setTableId(idstable).build()).build())
.setKey(new InstructionKey(getInstructionKey())).setOrder(0).build();
instructions.add(gotoIdsTableInstruction);
Instruction gotoL2SwitchInstruction = new InstructionBuilder()
.setInstruction(new GoToTableCaseBuilder()
.setGoToTable(new GoToTableBuilder().setTableId(l2switchTable).build()).build())
.setKey(new InstructionKey(getInstructionKey())).setOrder(1).build();
instructions.add(gotoL2SwitchInstruction);
InstructionsBuilder isb = new InstructionsBuilder();
isb.setInstruction(instructions);
return isb;
}
The instructions are used to construct a flow rule as follows:
flowBuilder.setMatch(match).setInstructions(isb.build()).setPriority(30)
.setBufferId(OFConstants.ANY).setHardTimeout(0).setIdleTimeout(0)
.setFlags(new FlowModFlags(false, false, false, false, false));
I run the application and no exceptions are thrown. However, when I go to list the flow rules at the switch, the flow never got installed. I can successfully install flows on the switch when I have a single GoTo instruction but not when I have multiple GoTo instructions.
My questions are :
- Is having multiple GoTo targets permitted in openflow and supported on all openflow compliant switches? Specifically, does openvswitch support multiple targets?
I tried the following :
sudo ovs-ofctl -O OpenFlow13 add-flow s1 table=0,in_port=2,actions=goto_table:1,goto_table:2
ovs-ofctl: instruction goto_table may be specified only once
Here is my version:
ovs-ofctl --version
ovs-ofctl (Open vSwitch) 2.4.1
Compiled Sep 25 2016 21:59:05
OpenFlow versions 0x1:0x4
Is this an ovs version problem?
- Is this a place where a group table should be used?
Thanks.